IPC Subgroup
F15C 1/12 Multiple arrangements thereof for performing operations of the same kind, e.g. majority gates, identity gates
Introduced: September 1968
Last revised: January 2006
Full Title
Circuit elements having no moving parts > Boundary-layer devices, e.g. wall-attachment amplifiers > for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate > Multiple arrangements thereof for performing operations of the same kind, e.g. majority gates, identity gates
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- Subclass:
- FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
Top Applicants
Top 10 applicants by patent filingsfor class F15, 2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 1,079
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 980
- SMC CORPORATION JP 737
- HITACHI CONSTRUCTION MACHINERY COMPANY JP 674
- KYB CORPORATION JP 525
- CATERPILLAR US 461
- FESTO & COMPANY DE 451
- ZHEJIANG UNIVERSITY 448
- HITACHI CONSTRUCTION MACHINERY COMPANY 442
- XUZHOU HEAVY MACHINERY COMPANY 404