Section B: Performing Operations; Transporting
~18,468,899
Applications (2013–2023)
PATSTAT worldwide
38
Classes
173
Subclasses
2,783
Main Groups
18,398
IPC
56,958
CPC
Description
Section B encompasses mechanical engineering and transportation technologies. It covers manufacturing processes, machines, tools, engines, and mechanical systems used to perform physical operations or move materials and objects. This section includes diverse fields such as metalworking, printing, agriculture, construction, vehicle design, and mechanical propulsion systems. Section B complements Section A (human necessities) by providing the technological means and mechanical infrastructure for implementing practical solutions across industries.
Visualizations
Size of each class by number of subgroups
| Class | Title | Descendants |
|---|---|---|
| B01 | PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL | 7,041 |
| B02 | CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING | 362 |
| B03 | SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS | 314 |
| B04 | CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES | 145 |
| B05 | SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL | 1,276 |
| B06 | GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL | 86 |
| B07 | SEPARATING SOLIDS FROM SOLIDS; SORTING | 222 |
| B08 | CLEANING | 215 |
| B09 | DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL | 105 |
| B21 | MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL | 1,676 |
| B22 | CASTING; POWDER METALLURGY | 1,004 |
| B23 | MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR | 4,278 |
| B24 | GRINDING; POLISHING | 749 |
| B25 | HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS | 1,029 |
| B26 | HAND CUTTING TOOLS; CUTTING; SEVERING | 552 |
| B27 | WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL | 580 |
| B28 | WORKING CEMENT, CLAY, OR STONE | 789 |
| B29 | WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL | 7,032 |
| B30 | PRESSES | 265 |
| B31 | MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER | 595 |
| B32 | LAYERED PRODUCTS | 1,045 |
| B33 | ADDITIVE MANUFACTURING TECHNOLOGY | 12 |
| B41 | PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS | 2,638 |
| B42 | BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER | 413 |
| B43 | WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES | 418 |
| B44 | DECORATIVE ARTS | 222 |
| B60 | VEHICLES IN GENERAL | 8,225 |
| B61 | RAILWAYS | 913 |
| B62 | LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS | 1,550 |
| B63 | SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT | 1,363 |
| B64 | AIRCRAFT; AVIATION; COSMONAUTICS | 1,271 |
| B65 | CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL | 8,975 |
| B66 | HOISTING; LIFTING; HAULING | 1,011 |
| B67 | OPENING, CLOSING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING | 822 |
| B68 | SADDLERY; UPHOLSTERY | 123 |
| B81 | MICROSTRUCTURAL TECHNOLOGY | 451 |
| B82 | NANOTECHNOLOGY | 40 |
| B99 | SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION | 2 |
Classification entries by hierarchy level
IPC and CPC are identically structured here. All 38 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B02 CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING heading IPC+CPC Available in IPC and CPC
- B03 SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS heading IPC+CPC Available in IPC and CPC
- B04 CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES heading IPC+CPC Available in IPC and CPC
- B05 SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL heading IPC+CPC Available in IPC and CPC
- B06 GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL heading IPC+CPC Available in IPC and CPC
- B09 DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL heading IPC+CPC Available in IPC and CPC
- B21 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL heading IPC+CPC Available in IPC and CPC
- B23 MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR heading IPC+CPC Available in IPC and CPC
- B27 WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL heading IPC+CPC Available in IPC and CPC
- B29 WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL heading IPC+CPC Available in IPC and CPC
- B31 MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER heading IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Section B,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION 55,083
- HYUNDAI MOTOR COMPANY KR 32,376
- ROBERT BOSCH DE 31,477
- FORD GLOBAL TECHNOLOGIES US 30,353
- SEIKO EPSON CORPORATION JP 28,917
- CANON JP 24,721
- HONDA MOTOR COMPANY 23,675
- KIA MOTORS CORPORATION KR 23,475
- CHINESE ACADEMY OF SCIENCES 20,308
- BMW (BAYERISCHE MOTOREN WERKE) DE 17,550
Top Applicants (CPC)
Section B,2013–2023, worldwide · Source: EPO PATSTAT
- TOYOTA MOTOR CORPORATION JP 47,835
- HYUNDAI MOTOR COMPANY KR 37,277
- FORD GLOBAL TECHNOLOGIES US 34,736
- ROBERT BOSCH DE 34,061
- KIA MOTORS CORPORATION KR 28,157
- HONDA MOTOR COMPANY 21,010
- SEIKO EPSON CORPORATION 18,493
- BMW (BAYERISCHE MOTOREN WERKE) DE 18,167
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 18,045
- BOEING COMPANY US 16,326
Classes in section B
B02 Crushing, Pulverising, or Disintegrating; Preparatory Treatment of Grain for Milling
B04 Centrifugal Apparatus or Machines for Carrying-Out Physical or Chemical Processes
B05 Spraying or Atomising in General; Applying Fluent Materials to Surfaces, in General
B06 Generating or Transmitting Mechanical Vibrations in General
B07 Separating Solids From Solids; Sorting
- B07B Separating Solids From Solids by Sieving, Screening, Sifting or by Using Gas Currents; Separating by Other Dry Methods Applicable to Bulk Material, e.g. Loose Articles Fit to Be Handled Like Bulk Material
- B07C Postal Sorting; Sorting Individual Articles, or Bulk Material Fit to Be Sorted Piece-Meal, e.g. by Picking
B09 Disposal of Solid Waste; Reclamation of Contaminated Soil
B21 Mechanical Metal-Working Without Essentially Removing Material; Punching Metal
- B21B Rolling of Metal
- B21C Manufacture of Metal Sheets, Wire, Rods, Tubes, Profiles or Like Semi-Manufactured Products Otherwise Than by Rolling; Auxiliary Operations Used in Connection With Metal-Working Without Essentially Removing Material
- B21D Working or Processing of Sheet Metal or Metal Tubes, Rods or Profiles Without Essentially Removing Material; Punching Metal
- B21F Working or Processing of Metal Wire
- B21G Making Needles, Pins or Nails of Metal
- B21H Making Particular Metal Objects by Rolling, e.g. Screws, Wheels, Rings, Barrels, Balls
- B21J Forging; Hammering; Pressing Metal; Riveting; Forge Furnaces
- B21K Making Forged or Pressed Metal Products, e.g. Horse-Shoes, Rivets, Bolts or Wheels
- B21L Making Metal Chains
B23 Machine Tools; Metal-Working Not Otherwise Provided for
- B23B Turning; Boring
- B23C Milling
- B23D Planing; Slotting; Shearing; Broaching; Sawing; Filing; Scraping; Like Operations for Working Metal by Removing Material, Not Otherwise Provided for
- B23F Making Gears or Toothed Racks
- B23G Thread Cutting; Working of Screws, Bolt Heads or Nuts, in Conjunction Therewith
- B23H Working of Metal by the Action of a High Concentration of Electric Current on a Workpiece Using an Electrode Which Takes the Place of a Tool; Such Working Combined With Other Forms of Working of Metal
- B23K Soldering or Unsoldering; Welding; Cladding or Plating by Soldering or Welding; Cutting by Applying Heat Locally, e.g. Flame Cutting; Working by Laser Beam
- B23P Metal-Working Not Otherwise Provided for; Combined Operations; Universal Machine Tools
- B23Q Details, Components, or Accessories for Machine Tools, e.g. Arrangements for Copying or Controlling; Machine Tools in General, Characterised by the Construction of Particular Details or Components; Combinations or Associations of Metal-Working Machines, Not Directed to a Particular Result
-
- B25B Tools or Bench Devices Not Otherwise Provided For, for Fastening, Connecting, Disengaging, or Holding
- B25C Hand-Held Nailing or Stapling Tools; Manually-Operated Portable Stapling Tools
- B25D Percussive Tools
- B25F Combination or Multi-Purpose Tools Not Otherwise Provided for; Details or Components of Portable Power-Driven Tools Not Particularly Related to the Operations Performed and Not Otherwise Provided for
- B25G Handles for Hand Implements
- B25H Workshop Equipment, e.g. for Marking-Out Work; Storage Means for Workshops
- B25J Manipulators; Chambers Provided With Manipulation Devices
B27 Working or Preserving Wood or Similar Material; Nailing or Stapling Machines in General
- B27B Saws for Wood or Similar Material; Components or Accessories Therefor
- B27C Planing, Drilling, Milling, Turning or Universal Machines for Wood or Similar Material
- B27D Working Veneer or Plywood
- B27F Dovetailed Work; Tenons; Slotting Machines for Wood or Similar Material; Nailing or Stapling Machines
- B27G Accessory Machines or Apparatus for Working Wood or Similar Materials; Tools for Working Wood or Similar Materials; Safety Devices for Wood Working Machines or Tools
- B27H Bending Wood or Similar Material; Cooperage; Making Wheels From Wood or Similar Material
- B27J Mechanical Working of Cane, Cork, or Similar Materials
- B27K Processes, Apparatus or Selection of Substances for Impregnating, Staining, Dyeing or Bleaching of Wood, or for Treating of Wood With Permeant Liquids, Not Otherwise Provided for; Chemical or Physical Treatment of Cork, Cane, Reed, Straw or Similar Materials
- B27L Removing Bark or Vestiges of Branches; Splitting Wood; Manufacture of Veneer, Wooden Sticks, Wood Shavings, Wood Fibres or Wood Powder
- B27M Working of Wood Not Provided for in Subclasses; Manufacture of Specific Wooden Articles
- B27N Manufacture by Dry Processes of Articles, With or Without Organic Binding Agents, Made From Particles or Fibres Consisting of Wood or Other Lignocellulosic or Like Organic Material
B29 Working of Plastics; Working of Substances in a Plastic State in General
- B29B Preparation or Pretreatment of the Material to Be Shaped; Making Granules or Preforms; Recovery of Plastics or Other Constituents of Waste Material Containing Plastics
- B29C Shaping or Joining of Plastics; Shaping of Material in a Plastic State, Not Otherwise Provided for; After-Treatment of the Shaped Products, e.g. Repairing
- B29D Producing Particular Articles From Plastics or From Substances in a Plastic State
- B29K Indexing Scheme Associated With Subclasses , or , Relating to Moulding Materials or to Materials for Reinforcements, Fillers or Preformed Parts, e.g. Inserts
- B29L Indexing Scheme Associated With Subclass , Relating to Particular Articles
-
- B31B Making Containers of Paper, Cardboard or Material Worked in a Manner Analogous to Paper
- B31C Making Wound Articles, e.g. Wound Tubes, of Paper, Cardboard or Material Worked in a Manner Analogous to Paper
- B31D Making Articles of Paper, Cardboard or Material Worked in a Manner Analogous to Paper, Not Provided for in Subclasses or
- B31F Mechanical Working or Deformation of Paper, Cardboard or Material Worked in a Manner Analogous to Paper
B41 Printing; Lining Machines; Typewriters; Stamps
- B41B Machines or Accessories for Making, Setting, or Distributing Type; Type; Photographic or Photoelectronic Composing Devices
- B41C Processes for the Manufacture or Reproduction of Printing Surfaces
- B41D Apparatus for the Mechanical Reproduction of Printing Surfaces for Stereotype Printing; Shaping Elastic or Deformable Material to Form Printing Surfaces
- B41F Printing Machines or Presses
- B41G Apparatus for Bronze Printing, Line Printing, or for Bordering or Edging Sheets or Like Articles; Auxiliary Apparatus for Perforating in Conjunction With Printing
- B41J Typewriters; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From a Forme; Correction of Typographical Errors
- B41K Stamps; Stamping or Numbering Apparatus or Devices
- B41L Apparatus or Devices for Manifolding, Duplicating or Printing for Office or Other Commercial Purposes; Addressing Machines or Like Series-Printing Machines
- B41M Printing, Duplicating, Marking, or Copying Processes; Colour Printing
- B41N Printing Plates or Foils; Materials for Surfaces Used in Printing Machines for Printing, Inking, Damping, or the Like; Preparing Such Surfaces for Use or Conserving Them
B42 Bookbinding; Albums; Files; Special Printed Matter
- B42B Permanently Attaching Together Sheets, Quires, or Signatures, or Permanently Attaching Objects Thereto
- B42C Bookbinding
- B42D Books; Book Covers; Loose Leaves; Printed Matter Characterised by Identification or Security Features; Printed Matter of Special Format or Style Not Otherwise Provided for; Devices for Use Therewith and Not Otherwise Provided for; Movable-Strip Writing or Reading Apparatus
- B42F Sheets Temporarily Attached Together; Filing Appliances; File Cards; Indexing
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- B44B Machines, Apparatus or Tools for Artistic Work, e.g. for Sculpturing, Guilloching, Carving, Branding or Inlaying
- B44C Producing Decorative Effects; Mosaics; Tarsia Work; Paperhanging
- B44D Painting or Artistic Drawing, Not Otherwise Provided for; Preserving Paintings; Surface Treatment to Obtain Special Artistic Surface Effects or Finishes
- B44F Special Designs or Pictures
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- B60B Vehicle Wheels; Castors; Axles for Wheels or Castors; Increasing Wheel Adhesion
- B60C Vehicle Tyres; Tyre Inflation; Tyre Changing; Connecting Valves to Inflatable Elastic Bodies in General; Devices or Arrangements Related to Tyres
- B60D Vehicle Connections
- B60F Vehicles for Use Both on Rail and on Road; Vehicles Capable of Travelling in or on Different Media, e.g. Amphibious Vehicles
- B60G Vehicle Suspension Arrangements
- B60H Arrangements of Heating, Cooling, Ventilating or Other Air-Treating Devices Specially Adapted for Passenger or Goods Spaces of Vehicles
- B60J Windows, Windscreens, Non-Fixed Roofs, Doors, or Similar Devices for Vehicles; Removable External Protective Coverings Specially Adapted for Vehicles
- B60K Arrangement or Mounting of Propulsion Units or of Transmissions in Vehicles; Arrangement or Mounting of Plural Diverse Prime-Movers in Vehicles; Auxiliary Drives for Vehicles; Instrumentation or Dashboards for Vehicles; Arrangements in Connection With Cooling, Air Intake, Gas Exhaust or Fuel Supply of Propulsion Units in Vehicles
- B60L Propulsion of Electrically-Propelled Vehicles; Supplying Electric Power for Auxiliary Equipment of Electrically-Propelled Vehicles; Electrodynamic Brake Systems for Vehicles in General; Magnetic Suspension or Levitation for Vehicles; Monitoring Operating Variables of Electrically-Propelled Vehicles; Electric Safety Devices for Electrically-Propelled Vehicles
- B60M Power Supply Lines, or Devices Along Rails, for Electrically-Propelled Vehicles
- B60N Seats Specially Adapted for Vehicles; Vehicle Passenger Accommodation Not Otherwise Provided for
- B60P Vehicles Adapted for Load Transportation or to Transport, to Carry, or to Comprise Special Loads or Objects
- B60Q Arrangement of Signalling or Lighting Devices, the Mounting or Supporting Thereof or Circuits Therefor, for Vehicles in General
- B60R Vehicles, Vehicle Fittings, or Vehicle Parts, Not Otherwise Provided for
- B60S Servicing, Cleaning, Repairing, Supporting, Lifting, or Manoeuvring of Vehicles, Not Otherwise Provided for
- B60T Vehicle Brake Control Systems or Parts Thereof; Brake Control Systems or Parts Thereof, in General; Arrangement of Braking Elements on Vehicles in General; Portable Devices for Preventing Unwanted Movement of Vehicles; Vehicle Modifications to Facilitate Cooling of Brakes
- B60V Air-Cushion Vehicles
- B60W Conjoint Control of Vehicle Sub-Units of Different Type or Different Function; Control Systems Specially Adapted for Hybrid Vehicles; Road Vehicle Drive Control Systems for Purposes Not Related to the Control of a Particular Sub-Unit
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- B61B Railway Systems; Equipment Therefor Not Otherwise Provided for
- B61C Locomotives; Motor Railcars
- B61D Body Details or Kinds of Railway Vehicles
- B61F Rail Vehicle Suspensions, e.g. Underframes, Bogies or Arrangements of Wheel Axles; Rail Vehicles for Use on Tracks of Different Width; Preventing Derailing of Rail Vehicles; Wheel Guards, Obstruction Removers or the Like for Rail Vehicles
- B61G Couplings Specially Adapted for Railway Vehicles; Draught or Buffing Appliances Specially Adapted for Railway Vehicles
- B61H Brakes or Other Retarding Devices Specially Adapted for Rail Vehicles; Arrangement or Disposition Thereof in Rail Vehicles
- B61J Shifting or Shunting of Rail Vehicles
- B61K Auxiliary Equipment Specially Adapted for Railways, Not Otherwise Provided for
- B61L Guiding Railway Traffic; Ensuring the Safety of Railway Traffic
B62 Land Vehicles for Travelling Otherwise Than on Rails
- B62B Hand-Propelled Vehicles, e.g. Hand Carts or Perambulators; Sledges
- B62C Vehicles Drawn by Animals
- B62D Motor Vehicles; Trailers
- B62H Cycle Stands; Supports or Holders for Parking or Storing Cycles; Appliances Preventing or Indicating Unauthorised Use or Theft of Cycles; Locks Integral With Cycles; Devices for Learning to Ride Cycles
- B62J Cycle Saddles or Seats; Auxiliary Devices or Accessories Specially Adapted to Cycles and Not Otherwise Provided For, e.g. Article Carriers or Cycle Protectors
- B62L Brakes Specially Adapted for Cycles
- B62M Rider Propulsion of Wheeled Vehicles or Sledges; Powered Propulsion of Sledges or Cycles; Transmissions Specially Adapted for Such Vehicles
B63 Ships or Other Waterborne Vessels; Related Equipment
- B63B Ships or Other Waterborne Vessels; Equipment for Shipping
- B63C Launching, Hauling-Out, or Dry-Docking of Vessels; Life-Saving in Water; Equipment for Dwelling or Working Under Water; Means for Salvaging or Searching for Underwater Objects
- B63G Offensive or Defensive Arrangements on Vessels; Mine-Laying; Mine-Sweeping; Submarines; Aircraft Carriers
- B63H Marine Propulsion or Steering
- B63J Auxiliaries on Vessels
B64 Aircraft; Aviation; Cosmonautics
- B64B Lighter-Than-Air Aircraft
- B64C Aeroplanes; Helicopters
- B64D Equipment for Fitting in or to Aircraft; Flight Suits; Parachutes; Arrangement or Mounting of Power Plants or Propulsion Transmissions in Aircraft
- B64G Cosmonautics; Vehicles or Equipment Therefor
- B64U Unmanned Aerial Vehicles [UAV]; Equipment Therefor
B65 Conveying; Packing; Storing; Handling Thin or Filamentary Material
- B65B Machines, Apparatus or Devices For, or Methods Of, Packaging Articles or Materials; Unpacking
- B65C Labelling or Tagging Machines, Apparatus, or Processes
- B65D Containers for Storage or Transport of Articles or Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding Containers; Accessories, Closures, or Fittings Therefor; Packaging Elements; Packages
- B65F Gathering or Removal of Domestic or Like Refuse
- B65G Transport or Storage Devices, e.g. Conveyors for Loading or Tipping, Shop Conveyor Systems or Pneumatic Tube Conveyors
- B65H Handling Thin or Filamentary Material, e.g. Sheets, Webs, Cables
B66 Hoisting; Lifting; Hauling
- B66B Elevators; Escalators or Moving Walkways
- B66C Cranes; Load-Engaging Elements or Devices for Cranes, Capstans, Winches, or Tackles
- B66D Capstans; Winches; Tackles, e.g. Pulley Blocks; Hoists
- B66F Hoisting, Lifting, Hauling, or Pushing, Not Otherwise Provided For, e.g. Devices Which Apply a Lifting or Pushing Force Directly to the Surface of a Load
B67 Opening or Closing Bottles, Jars or Similar Containers; Liquid Handling
- B67B Applying Closure Members to Bottles, Jars, or Similar Containers; Opening Closed Containers
- B67C Filling With Liquids or Semiliquids, or Emptying, of Bottles, Jars, Cans, Casks, Barrels, or Similar Containers, Not Otherwise Provided for; Funnels
- B67D Dispensing, Delivering, or Transferring Liquids, Not Otherwise Provided for
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- B82B Nanostructures Formed by Manipulation of Individual Atoms or Molecules, or Limited Collections of Atoms or Molecules as Discrete Units; Manufacture or Treatment Thereof
- B82Y Specific Uses or Applications of Nanostructures; Measurement or Analysis of Nanostructures; Manufacture or Treatment of Nanostructures
B99 Subject Matter Not Otherwise Provided for in This Section