Patent Classification Explorer PCE

DIFF Main Group

C22B 7/00

Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof;

Introduced: September 1968

Title

Titles differ between systems:

IPC: Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

CPC: Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof;

Full Title

Full titles differ between systems:

IPC:

Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof

CPC:

Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof;

CPC subdivides this area 3x more granularly than IPC with 4 additional codes.

4 codes are CPC-only extensions.

Child Classifications

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C22B 7/001 +3 CPC CPC only CPC only
C22B 7/005 CPC only CPC only
C22B 7/006 +2 CPC CPC only CPC only
C22B 7/009 CPC only CPC only
C22B 7/02 Working-up flue dust IPC+CPC Available in IPC and CPC
C22B 7/04 Working-up slag IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class C22,2013–2023, worldwide · Source: EPO PATSTAT

JFE STEEL JP 7,620
NIPPON STEEL CORPORATION JP 5,769
POSCO (POHANG IRON AND STEEL COMPANY) KR 4,523
JFE STEEL 3,080
NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,999
ARCELORMITTAL LU 2,962
CENTRAL SOUTH UNIVERSITY 2,431
KOBE STEEL JP 2,100
CHINESE ACADEMY OF SCIENCES 2,052
MITSUBISHI MATERIALS CORPORATION JP 1,405