DIFF Main Group
F16K 25/00 Details relating to contact between valve members and seats (movement of valve members other than for opening and closing F16K29/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Details relating to contact between valve members and seats
CPC: Details relating to contact between valve members and seats (movement of valve members other than for opening and closing F16K29/00)
Full Title
Full titles differ between systems:
IPC:
Details relating to contact between valve members and seats
CPC:
Details relating to contact between valve members and seats (movement of valve members other than for opening and closing F16K29/00)
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- F16K 25/02 Arrangements using fluid issuing from valve members or seats IPC+CPC Available in IPC and CPC
- F16K 25/04 Arrangements for preventing erosion, not otherwise provided for IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F16,2013–2023, worldwide · Source: EPO PATSTAT
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
- ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
- TOYOTA MOTOR CORPORATION 7,215
- HYUNDAI MOTOR COMPANY KR 6,846
- ROBERT BOSCH DE 6,106
- NTN CORPORATION 5,305
- SKF SE 4,219
- KIA MOTORS CORPORATION KR 3,852
- NSK 3,850
- HONDA MOTOR COMPANY 3,639
Top Applicants (CPC)
Class F16,2013–2023, worldwide · Source: EPO PATSTAT
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
- ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
- HYUNDAI MOTOR COMPANY KR 7,933
- ROBERT BOSCH DE 7,059
- KIA MOTORS CORPORATION KR 4,867
- SKF SE 4,729
- TOYOTA MOTOR CORPORATION JP 4,111
- FORD GLOBAL TECHNOLOGIES US 3,838
- GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
- TOYOTA MOTOR CORPORATION 3,499