CPC Main Group
F16L 23/00 Flanged joints (F16L13/00, F16L17/00, F16L19/00 take precedence; adjustable joints F16L27/00; for hoses F16L33/00; couplings of the quick-acting type F16L37/00; for double-walled or multi-channel pipes, or pipe assemblies F16L39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00)
Filing statistics
CPC F16L 23/00 belongs to the parent subclass F16L, which recorded 163,487 patent applications worldwide between 2013 and 2023. Annual filings declined from 13,131 in 2013 to 11,603 in 2023 (-12%), peaking at 17,062 applications in 2020. 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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- F16L 23/02 the flanges being connected by members tensioned axially (F16L23/12 takes precedence)
- F16L 23/04 the flanges being connected by members tensioned in the radial plane (F16L23/12 takes precedence)
- F16L 23/12 specially adapted for particular pipes
- F16L 23/16 characterised by the sealing means
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