CPC Main Group Additional Only
B22F 2303/00 Functional details of metal or compound in the powder or product,
10 direct subcodes
Child Classifications
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- B22F 2303/01 Main component
- B22F 2303/05 Compulsory alloy component
- B22F 2303/10 Optional alloy component
- B22F 2303/15 Intermetallic
- B22F 2303/20 Coating by means of particles
- B22F 2303/25 Coating by means of fibres
- B22F 2303/30 Coating alloy
- B22F 2303/35 Molten metal infiltrating a metal preform
- B22F 2303/40 Layer in a composite stack of layers, workpiece or article
- B22F 2303/45 Part of a final mixture to be processed further
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