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IPC Main Group
C22B 58/00

Obtaining gallium or indium

Introduced: July 1974

Last revised: January 2006

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
Subclass:
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS

Filing statistics

IPC C22B 58/00 belongs to the parent subclass C22B, which recorded 85,461 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,202 in 2013 to 10,457 in 2023 (+69%). The most active applicants in class C22 are JFE STEEL (7,152 applications), NIPPON STEEL CORPORATION (5,416 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (4,530 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

GALLIUMINDIUM

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