with flat sealing faces; Packings therefor

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing > with flat sealing faces; Packings therefor

CPC:

Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing (F16K5/00 takes precedence; in barrages or weirs E02B8/04) > with flat sealing faces; Packings therefor

CPC subdivides this area 3x more granularly than IPC with 9 additional codes.

9 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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F16K 3/0209 CPC only CPC only
F16K 3/0218 CPC only CPC only
F16K 3/0227 +1 CPC CPC only CPC only
F16K 3/0245 CPC only CPC only
F16K 3/0254 CPC only CPC only
F16K 3/0263 CPC only CPC only
F16K 3/0272 CPC only CPC only
F16K 3/0281 CPC only CPC only
F16K 3/029 CPC only CPC only
F16K 3/03 with a closure member in the form of an iris-diaphragm IPC+CPC Available in IPC and CPC
F16K 3/04 with pivoted closure members IPC+CPC Available in IPC and CPC
F16K 3/12 with wedge-shaped arrangements of sealing faces IPC+CPC Available in IPC and CPC
F16K 3/16 with special arrangements for separating the sealing faces or for pressing them together (F16K3/10, F16K3/14 take precedence) 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