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IPC Main Group
C22C 1/00

Making non-ferrous alloys

Introduced: September 1968

Last revised: January 2023

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
Subclass:
ALLOYS

Additional Content

Glossary

in situ formation the phase formed (whether metal or non-metal) is not added in advance, but is generated in situ in the matrix by reaction during the entire process of preparing the alloy, including powder treatment, sintering, etc. reaction sintering the powder raw material undergoes a chemical reaction at a certain temperature and simultaneously performs densification and synthesis of the specified components to obtain a predetermined sintered body.

Limiting references

Making non-ferrous alloys by electrothermic methods Making non-ferrous alloys by electrolysis ,

Related Keywords

making ALLOYS in general

7 direct subcodes

Child Classifications

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  • C22C 1/06 with the use of special agents for refining or deoxidising
  • C22C 1/08 Alloys with open or closed pores
  • C22C 1/1 Alloys containing non-metals
  • C22C 1/11 Making amorphous alloys
  • C22C 1/12 by processing in a semi-solid state, e.g. holding the alloy in the solid-liquid phase

Top Applicants

Top 10 applicants by patent filingsfor class C22, 2013–2023, worldwide · Source: EPO PATSTAT

  1. JFE STEEL JP 7,152
  2. NIPPON STEEL CORPORATION JP 5,416
  3. POSCO (POHANG IRON AND STEEL COMPANY) KR 4,530
  4. JFE STEEL 3,986
  5. CENTRAL SOUTH UNIVERSITY 3,086
  6. NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,843
  7. CHINESE ACADEMY OF SCIENCES 2,702
  8. ARCELORMITTAL LU 2,124
  9. NSSMC (NIPPON STEEL & SUMITOMO METAL) 2,075
  10. KOBE STEEL JP 1,891