Details

Full Title

Piston-rings , seats therefor; Ring sealings of similar construction (other sealings between pistons and cylinders F16J3/06, F16J15/16 ; tools for mounting or removing piston-rings or the like B25B; piston sealing arrangements on brake master cylinders B60T11/236 ) > Details

Filing statistics

CPC F16J 9/12 belongs to the parent subclass F16J, which recorded 59,304 patent applications worldwide between 2013 and 2023. Annual filings declined from 4,649 in 2013 to 3,949 in 2023 (-15%), peaking at 6,412 applications in 2017. 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

4 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

F16J 9/14 Joint-closures
F16J 9/20 Rings with special cross-section (L-section rings F16J9/02); Oil-scraping rings
F16J 9/22 Rings for preventing wear of grooves or like seatings
F16J 9/24 Members preventing rotation of rings in grooves

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