Special valve constructions ( ; valves in general F16K); Shape or construction of throttling passages

Introduced: September 1968

Title

Titles differ between systems:

IPC: Special valve constructions; Shape or construction of throttling passages

CPC: Special valve constructions ( ; valves in general F16K); Shape or construction of throttling passages

Full Title

Full titles differ between systems:

IPC:

Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium > Details > Special valve constructions; Shape or construction of throttling passages

CPC:

Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium (F16F5/00 takes precedence; connection of valves to inflatable elastic bodies B60C29/00; ) > Details > Special valve constructions ( ; valves in general F16K); Shape or construction of throttling passages

Of 7 combined children, 4 exist in both systems.

3 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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F16F 9/3405 CPC only CPC only
F16F 9/341 CPC only CPC only
F16F 9/3415 CPC only CPC only
F16F 9/342 Throttling passages operating with metering pins IPC+CPC Available in IPC and CPC
F16F 9/344 Vortex flow passages since 1995 IPC+CPC Available in IPC and CPC
F16F 9/346 Throttling passages in the form of slots arranged in cylinder walls +1 CPC IPC+CPC Available in IPC and CPC
F16F 9/348 Throttling passages in the form of annular discs , operating in opposite directions +5 CPC 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