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 (wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07C)
Introduced: September 1968
Description
B07B encompasses dry separation and sorting methods for bulk solids, including mechanical sieving, screening, sifting, and air classification techniques. This subclass covers equipment and processes that separate particulate materials, granules, or discrete articles by size, density, or aerodynamic properties without using liquids. Applications range from mineral processing and agricultural commodity handling to recycling and industrial powder classification, excluding wet separation methods and liquid-based sorting systems covered elsewhere in the B07 hierarchy.
Title
Titles differ between systems:
IPC: 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
CPC: 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 (wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07C)
Full Title
Full titles differ between systems:
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
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 (wet separating processes, sorting by processes using fluent material in the same way as liquid B03; combinations of dry separating apparatus with wet separating apparatus B03B; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material B07C)
Additional Content IPC
Limiting references
Separating isotopes Combinations of dry separating apparatus with wet separating apparatus or pneumatic tables Separating solids from solids using pneumatic tables or jigs Hand sorting, postal sorting, sorting by switching or other devices actuated in response to detection or measurement of some feature of articles or samples of material
Application references
Grading or sorting of eggs , Machines for sorting heel lifts in shoe-making Sorting arrangements forhandling work specially combined with, or arranged in, or specially adapted for use in connection with, machine tools Straining or screening of pulp in paper-making Rotary screen-drums used in paper-making Sorting of coins
Of 10 combined children, 7 exist in both systems.
3 codes are CPC-only extensions.
Note: 3 CPC extensions are marked as secondary classification only.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B07B 1/00 Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like +1 CPC IPC+CPC Available in IPC and CPC
- B07B 11/00 Arrangement of accessories in apparatus for separating solids from solids using gas currents IPC+CPC Available in IPC and CPC
- B07B 13/00 Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices (grading eggs A01K43/04) +2 CPC IPC+CPC Available in IPC and CPC
- B07B 15/00 Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material (using wet methods B03B7/00; using gas currents B07B9/00) IPC+CPC Available in IPC and CPC
- B07B 2201/00 Details applicable to machines for screening using sieves or gratings 2nd only +2 CPC CPC only CPC only
- B07B 4/00 Separating solids from solids by subjecting their mixture to gas currents (using tables or jigs B03B4/00) IPC+CPC Available in IPC and CPC
- B07B 7/00 Selective separation of solid materials carried by, or dispersed in, gas currents (sieves or filters for separating dispersed particles from gases or vapours B01D) IPC+CPC Available in IPC and CPC
- B07B 9/00 Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B07,2013–2023, worldwide · Source: EPO PATSTAT
- ANHUI JIEXUN OPTOELECTRONIC TECHNOLOGY COMPANY 444
- HENAN WINNER VIBRATING EQUIPMENT COMPANY 386
- DERRICK CORPORATION US 370
- SOLYSTIC FR 359
- XINXIANG ZHEN YING MACHINERY EQUIPMENT COMPANY 347
- ANHUI UNIVERSITY OF SCIENCE & TECHNOLOGY 288
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY 269
- CHINA TOBACCO HENAN INDUSTRIAL 230
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 230
- XINXIANG GAOFU MACHINERY COMPANY 229
Top Applicants (CPC)
Class B07,2013–2023, worldwide · Source: EPO PATSTAT
- DERRICK CORPORATION US 427
- SOLYSTIC FR 370
- M-I SWACO US 223
- SATAKE CORPORATION JP 190
- ANHUI JIEXUN OPTOELECTRONIC TECHNOLOGY COMPANY 186
- SIEMENS DE 175
- UNITED STATES POSTAL SERVICE US 158
- ANHUI UNIVERSITY OF SCIENCE & TECHNOLOGY 156
- UNITEC IT 150
- XINXIANG ZHEN YING MACHINERY EQUIPMENT COMPANY 149