CPC Subgroup Additional Only
B22F 2302/40 Carbon, graphite
Full Title
Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating > Carbon, graphite
2 direct subcodes
Child Classifications
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- B22F 2302/403 Carbon nanotube
- B22F 2302/406 Diamond
Top Applicants
Top 10 applicants by patent filingsfor 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