B22C 1/20 of organic agents
Introduced: September 1968
Full Title
Full titles differ between systems:
Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds > characterised by the use of binding agents; Mixtures of binding agents > of organic agents
Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C04B35/00); Chemical or physical features in the formation or manufacture of moulds > characterised by the use of binding agents; Mixtures of binding agents > of organic agents
Of 4 combined children, 3 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- B22C 1/24 of oily or fatty substances; of distillation residues therefrom IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B22,2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 1,719
- CHINESE ACADEMY OF SCIENCES 1,489
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,248
- TOYOTA MOTOR CORPORATION 1,043
- SIEMENS DE 1,028
- CENTRAL SOUTH UNIVERSITY 959
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 891
- UNITED TECHNOLOGIES CORPORATION (UTC) US 786
- UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 769
- JFE STEEL JP 761
Top Applicants (CPC)
Class B22,2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 2,157
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 1,633
- SIEMENS DE 1,267
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,124
- CHINESE ACADEMY OF SCIENCES 1,040
- UNITED TECHNOLOGIES CORPORATION (UTC) US 1,015
- JFE STEEL JP 884
- CENTRAL SOUTH UNIVERSITY 810
- HITACHI METALS JP 641
- SINTOKOGIO JP 624