with slip-ring pressed against a more or less radial face on one member

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Sealings > between relatively-moving surfaces > with slip-ring pressed against a more or less radial face on one member

CPC:

Sealings > between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00) > with slip-ring pressed against a more or less radial face on one member

CPC subdivides this area 4x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

Child Classifications

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F16J 15/3404 +1 CPC CPC only CPC only
F16J 15/3436 +6 CPC CPC only CPC only
F16J 15/3464 +5 CPC CPC only CPC only
F16J 15/3492 CPC only CPC only
F16J 15/3496 CPC only CPC only
F16J 15/36 connected by a diaphragm to the other member +1 CPC IPC+CPC Available in IPC and CPC
F16J 15/38 sealed by a packing 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