CPC Main Group
F16K 41/00 Spindle sealings
Filing statistics
CPC F16K 41/00 belongs to the parent subclass F16K, which recorded 159,976 patent applications worldwide between 2013 and 2023. Annual filings grew from 11,717 in 2013 to 12,144 in 2023 (+4%), peaking at 17,099 applications in 2018. The most active applicants in class F16 are SCHAEFFLER TECHNOLOGIES & COMPANY (22,817 applications), ZAHNRADFABRIK FRIEDRICHSHAFEN (10,523 applications) and HYUNDAI MOTOR COMPANY (7,933 applications).
Source: EPO PATSTAT, worldwide filings
6 direct subcodes
Child Classifications
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- F16K 41/02 with stuffing-box
- F16K 41/10 with diaphragm, e.g. shaped as bellows or tube
- F16K 41/14 with conical flange on the spindle which co-operates with a conical surface in the housing
- F16K 41/16 with a flange on the spindle which rests on a sealing ring
Top Applicants
Top 10 applicants by patent filingsfor 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