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CPC Subgroup Additional Only
F16C 2223/30

Coating surfaces

Full Title

Surface treatments; Hardening; Coating > Coating surfaces

Filing statistics

CPC F16C 2223/30 belongs to the parent subclass F16C, which recorded 111,595 patent applications worldwide between 2013 and 2023. Annual filings declined from 9,234 in 2013 to 7,843 in 2023 (-15%), peaking at 11,993 applications in 2016. 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

8 direct subcodes

Child Classifications

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  • F16C 2223/32 by attaching pre-existing layers, e.g. resin sheets or foils by adhesion to a substrate; Laminating
  • F16C 2223/40 by dipping in molten material
  • F16C 2223/42 by spraying the coating material, e.g. plasma spraying
  • F16C 2223/44 by casting molten material on the substrate
  • F16C 2223/46 by welding, e.g. by using a laser to build a layer
  • F16C 2223/60 by vapour deposition, e.g. PVD, CVD
  • F16C 2223/70 by electroplating or electrolytic coating, e.g. anodising, galvanising
  • F16C 2223/80 by powder coating

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