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DIFF Main Group
C09K 3/00

Materials not provided for elsewhere

Introduced: September 1968

IPC and CPC are identically structured here. All 10 subcodes exist in both systems.

5 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C09K 3/12 Materials for stopping leaks, e.g. in radiators, in tanks (filling pastes C09D5/34) IPC+CPC Available in IPC and CPC
  • C09K 3/16 Anti-static materials IPC+CPC Available in IPC and CPC
  • C09K 3/20 as substitutes for glycerol in its non-chemical uses, e.g. as a base in toiletry creams or ointments IPC+CPC Available in IPC and CPC
  • C09K 3/22 for dust-laying or dust-absorbing IPC+CPC Available in IPC and CPC
  • C09K 3/24 for simulating ice or snow IPC+CPC Available in IPC and CPC
  • C09K 3/30 for aerosols (aerosol containers B65D83/14) IPC+CPC Available in IPC and CPC
  • C09K 3/32 for absorbing liquids to remove pollution, e.g. oil, gasoline, fat since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C09,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 6,420
  2. NITTO DENKO CORPORATION JP 5,752
  3. HALLIBURTON ENERGY SERVICES GROUP US 5,650
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 5,635
  5. DOW GLOBAL TECHNOLOGIES US 4,844
  6. MERCK PATENT DE 4,779
  7. CHINESE ACADEMY OF SCIENCES 4,311
  8. FUJIFILM JP 4,205
  9. BASF (BADISCHE ANILIN & SODA FABRIK) DE 4,039
  10. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,931

Top Applicants (CPC)

Class C09,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 7,954
  2. HALLIBURTON ENERGY SERVICES GROUP US 6,584
  3. NITTO DENKO CORPORATION JP 6,500
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
  5. DOW GLOBAL TECHNOLOGIES US 6,324
  6. FUJIFILM JP 5,832
  7. MERCK PATENT DE 5,481
  8. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
  9. SAMSUNG DISPLAY KR 5,105
  10. NITTO DENKO CORPORATION 3,584