G01G WEIGHING
Introduced: September 1968
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- WEIGHING
Description
G01G covers apparatus and methods for determining the mass or weight of objects through mechanical, electronic, or combined measuring systems. This includes weighing scales of all types—from simple balances and spring scales to sophisticated electronic load cells and digital weighing instruments used in commercial, industrial, laboratory, and domestic applications. The classification encompasses the design, construction, and operation of weighing mechanisms, as well as auxiliary devices for display, control, and data processing integrated with weighing systems. Related measurement of physical properties derived from weight (such as density or concentration determination by weighing) falls within this scope, though purely gravitational measurements are classified elsewhere in G01M or G01N.
Filing statistics
IPC subclass G01G recorded 74,572 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,165 in 2013 to 8,619 in 2023 (+172%), peaking at 10,857 applications in 2020. The most active applicants in class G01 are SGCC(STATE GRID CORPORATION OF CHINA) (41,447 applications), CHINESE ACADEMY OF SCIENCES (32,952 applications) and ROBERT BOSCH (16,470 applications).
Source: EPO PATSTAT, worldwide filings
In class comparison
G01G ranks 13th of 18 subclasses with filings in G01, with 74,572 applications between 2013 and 2023, 1.6% of the class. Annual filings grew 172% from 2013 to 2023, above the class as a whole (+138%).
| Rank | Subclass | Title | Applications | Share |
|---|---|---|---|---|
| 1 | G01N, Investigating or Analysing Materials by Determining Their Chemical or Physical Properties | Investigating or Analysing Materials by Determining Their Chemical or Physical Properties | 1,640,918 | 34.9% |
| 2 | G01R, Measuring Electric Variables; Measuring Magnetic Variables | Measuring Electric Variables; Measuring Magnetic Variables | 598,083 | 12.7% |
| 3 | G01B, Measuring Length, Thickness or Similar Linear Dimensions; Measuring Angles; Measuring Areas; Measuring Irregularities of Surfaces or Contours | Measuring Length, Thickness or Similar Linear Dimensions; Measuring Angles; Measuring Areas; Measuring Irregularities of Surfaces or Contours | 395,662 | 8.4% |
| 4 | G01S, Radio Direction-Finding; Radio Navigation; Determining Distance or Velocity by Use of Radio Waves; Locating or Presence-Detecting by Use of the Reflection or Reradiation of Radio Waves; Analogous Arrangements Using Other Waves | Radio Direction-Finding; Radio Navigation; Determining Distance or Velocity by Use of Radio Waves; Locating or Presence-Detecting by Use of the Reflection or Reradiation of Radio Waves; Analogous Arrangements Using Other Waves | 358,214 | 7.6% |
| 5 | G01M, Testing Static or Dynamic Balance of Machines or Structures; Testing of Structures or Apparatus, Not Otherwise Provided for | Testing Static or Dynamic Balance of Machines or Structures; Testing of Structures or Apparatus, Not Otherwise Provided for | 339,843 | 7.2% |
| 6 | G01C, Measuring Distances, Levels or Bearings; Surveying; Navigation; Gyroscopic Instruments; Photogrammetry or Videogrammetry | Measuring Distances, Levels or Bearings; Surveying; Navigation; Gyroscopic Instruments; Photogrammetry or Videogrammetry | 271,474 | 5.8% |
| 7 | G01D, Measuring Not Specially Adapted for a Specific Variable; Arrangements for Measuring Two or More Variables Not Covered by a Single Other Subclass; Tariff Metering Apparatus; Transferring or Transducing Arrangements Not Specially Adapted for a Specific Variable; Measuring or Testing Not Otherwise Provided for | Measuring Not Specially Adapted for a Specific Variable; Arrangements for Measuring Two or More Variables Not Covered by a Single Other Subclass; Tariff Metering Apparatus; Transferring or Transducing Arrangements Not Specially Adapted for a Specific Variable; Measuring or Testing Not Otherwise Provided for | 207,395 | 4.4% |
| 8 | G01F, Measuring Volume, Volume Flow, Mass Flow, or Liquid Level; Metering by Volume | Measuring Volume, Volume Flow, Mass Flow, or Liquid Level; Metering by Volume | 157,084 | 3.3% |
| 9 | G01L, Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, or Fluid Pressure | Measuring Force, Stress, Torque, Work, Mechanical Power, Mechanical Efficiency, or Fluid Pressure | 145,069 | 3.1% |
| 10 | G01K, Measuring Temperature; Measuring Quantity of Heat; Thermally-Sensitive Elements Not Otherwise Provided for | Measuring Temperature; Measuring Quantity of Heat; Thermally-Sensitive Elements Not Otherwise Provided for | 118,108 | 2.5% |
| 13 | G01G | Weighing | 74,572 | 1.6% |
Source: EPO PATSTAT, worldwide filings
Additional Content
Limiting references
Determining weight by measuring volume
Application references
Weighing devices specially adapted for threshing machines Weighing devices combined with diagnosing apparatus Walking-sticks combined with weighing appliances Grading or sorting solid materials by dry methods according to weight Sorting according to weight Weighing cut product in combination with cutting Arrangements of weighing machines on vehicles Brake regulation responsive to vehicle weight Controlling the quantity of fluent-solid material fed or discharged in a container during packaging by weighing Check-weighing of filled containers or receptacles Controlling the quantity of plastic material, semi-liquids, liquids, or mixed solids and liquids, fed or filled in a container during packaging by weighing Separating measured quantities from supply by weighing Incorporation of weighing devices in cranes Measuring mass flow of a fluid or a fluent solid material Indicating or measuring level by measurement of weight, e.g. to determine the level of stored liquefied gas Analysing materials by weighing Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity Measuring gravitational fields or waves, or gravimetric prospecting using balances Ratio control of two or more flows by sensing weight of individual components Weighing devices combined with franking apparatus Testing of coins by weight Coin-freed apparatus for controlling dispensing of fluids, semi-liquids or granular material from reservoirs by weight
Related Keywords
12 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G01G 1/00 Weighing apparatus involving the use of a counterweight or other counterbalancing mass
- G01G 11/00 Apparatus for weighing a continuous stream of material during flow; Conveyor-belt weighers
- G01G 13/00 Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G 15/00 Arrangements for check-weighing of materials dispensed into removable containers
- G01G 17/00 Apparatus for, or methods of, weighing material of special form or property
- G01G 19/00 Weighing apparatus or methods adapted for special purposes not provided for in groups
- G01G 21/00 Details of weighing apparatus
- G01G 23/00 Auxiliary devices for weighing apparatus
- G01G 3/00 Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G 5/00 Weighing apparatus wherein the balancing is effected by fluid action
- G01G 7/00 Weighing apparatus wherein the balancing is effected by magnetic, electromagnetic, or electrostatic action, or by means not provided for in groups
- G01G 9/00 Methods of, or apparatus for, the determination of weight, not provided for in groups
Top Applicants
Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 41,447
- CHINESE ACADEMY OF SCIENCES 32,952
- ROBERT BOSCH DE 16,470
- SAMSUNG ELECTRONICS COMPANY KR 10,052
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
- ZHEJIANG UNIVERSITY 9,529
- GUANGDONG POWER GRID CORPORATION 8,615
- TSINGHUA UNIVERSITY 7,805
- HALLIBURTON ENERGY SERVICES GROUP US 7,796
- QUALCOMM US 7,171