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DIFF Main Group
C08J 9/00

Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof (mechanical aspects of shaping of plastics or substances in a plastic state for the production of porous or cellular articles B29C)

Introduced: July 1974

Title

Titles differ between systems:

IPC: Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof

CPC: Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof (mechanical aspects of shaping of plastics or substances in a plastic state for the production of porous or cellular articles B29C)

Full Title

Full titles differ between systems:

IPC:

Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof

CPC:

Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof (mechanical aspects of shaping of plastics or substances in a plastic state for the production of porous or cellular articles B29C)

Of 20 combined children, 13 exist in both systems.

7 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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  • C08J 9/0061 CPC only CPC only
  • C08J 9/0085 CPC only CPC only
  • C08J 9/009 CPC only CPC only
  • C08J 9/0095 CPC only CPC only
  • C08J 9/02 using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/24 by surface fusion and bonding of particles to form voids, e.g. sintering (of expandable particles C08J9/232) since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/26 by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/30 by mixing gases into liquid compositions or plastisols, e.g. frothing with air since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/32 from compositions containing microballoons, e.g. syntactic foams since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/33 Agglomerating foam fragments, e.g. waste foam since 1990 IPC+CPC Available in IPC and CPC
  • C08J 9/34 Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core since 1974 IPC+CPC Available in IPC and CPC
  • C08J 9/35 Composite foams, i.e. continuous macromolecular foams containing discontinuous cellular particles or fragments since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C08,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 14,262
  2. DOW GLOBAL TECHNOLOGIES US 12,486
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
  4. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
  5. CHINESE ACADEMY OF SCIENCES 6,993
  6. FUJIFILM JP 5,049
  7. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
  8. SHIN-ETSU CHEMICAL COMPANY JP 4,517
  9. BOREALIS AT 4,213
  10. ARKEMA FR 4,098

Top Applicants (CPC)

Class C08,2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 15,432
  2. DOW GLOBAL TECHNOLOGIES US 14,214
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 11,155
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,455
  5. FUJIFILM JP 6,178
  6. CHINESE ACADEMY OF SCIENCES 5,569
  7. SHIN-ETSU CHEMICAL COMPANY JP 5,506
  8. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,443
  9. TORAY INDUSTRIES JP 4,635
  10. NITTO DENKO CORPORATION JP 4,620