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CPC Subgroup
F16J 15/32

with elastic sealings, e.g. O-rings

Full Title

Sealings > between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00) > with elastic sealings, e.g. O-rings

8 direct subcodes

Child Classifications

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  • F16J 15/324 Arrangements for lubrication or cooling of the sealing itself
  • F16J 15/3244 with hydrodynamic pumping action
  • F16J 15/328 Manufacturing methods specially adapted for elastic sealings (moulding B29C)
  • F16J 15/3296 Arrangements for monitoring the condition or operation of elastic sealings (F16J15/326 takes precedence); Arrangements for control of elastic sealings, e.g. of their geometry or stiffness

Top Applicants

Top 10 applicants by patent filingsfor class F16, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
  2. ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
  3. HYUNDAI MOTOR COMPANY KR 7,933
  4. ROBERT BOSCH DE 7,059
  5. KIA MOTORS CORPORATION KR 4,867
  6. SKF SE 4,729
  7. TOYOTA MOTOR CORPORATION JP 4,111
  8. FORD GLOBAL TECHNOLOGIES US 3,838
  9. GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
  10. TOYOTA MOTOR CORPORATION 3,499