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:
Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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 9/02 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 9/04 using blowing gases generated by a previously added blowing agent since 1974 IPC+CPC Available in IPC and CPC
- C08J 9/22 After-treatment of expandable particles; Forming foamed products 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 9/28 by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum since 1974 +2 CPC 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 9/34 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
- C08J 9/36 After-treatment (C08J9/22 takes precedence) since 1974 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C08,2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 14,262
- DOW GLOBAL TECHNOLOGIES US 12,486
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
- CHINESE ACADEMY OF SCIENCES 6,993
- FUJIFILM JP 5,049
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
- SHIN-ETSU CHEMICAL COMPANY JP 4,517
- BOREALIS AT 4,213
- ARKEMA FR 4,098
Top Applicants (CPC)
Class C08,2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 15,432
- DOW GLOBAL TECHNOLOGIES US 14,214
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 11,155
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,455
- FUJIFILM JP 6,178
- CHINESE ACADEMY OF SCIENCES 5,569
- SHIN-ETSU CHEMICAL COMPANY JP 5,506
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,443
- TORAY INDUSTRIES JP 4,635
- NITTO DENKO CORPORATION JP 4,620