IPC Main Group
C22F 1/00 Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- Subclass:
- CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
Related Keywords
HARDENING of non-ferrous metals or alloysof metals by shot- PEENINGPLANISHING metal
9 direct subcodes
Child Classifications
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- C22F 1/02 in inert or controlled atmosphere or vacuum
- C22F 1/04 of aluminium or alloys based thereon
- C22F 1/06 of magnesium or alloys based thereon
- C22F 1/08 of copper or alloys based thereon
- C22F 1/1 of nickel or cobalt or alloys based thereon
- C22F 1/11 of chromium or alloys based thereon
- C22F 1/12 of lead or alloys based thereon
- C22F 1/14 of noble metals or alloys based thereon
- C22F 1/16 of other metals or alloys based thereon
Top Applicants
Top 10 applicants by patent filingsfor class C22, 2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL JP 7,152
- NIPPON STEEL CORPORATION JP 5,416
- POSCO (POHANG IRON AND STEEL COMPANY) KR 4,530
- JFE STEEL 3,986
- CENTRAL SOUTH UNIVERSITY 3,086
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,843
- CHINESE ACADEMY OF SCIENCES 2,702
- ARCELORMITTAL LU 2,124
- NSSMC (NIPPON STEEL & SUMITOMO METAL) 2,075
- KOBE STEEL JP 1,891