IPC Main Group
B21D 37/00 Tools as parts of machines covered by this subclass
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
Filing statistics
IPC B21D 37/00 belongs to the parent subclass B21D, which recorded 351,007 patent applications worldwide between 2013 and 2023. Annual filings grew from 16,565 in 2013 to 42,835 in 2023 (+159%), peaking at 47,343 applications in 2020. The most active applicants in class B21 are JFE STEEL (2,318 applications), JFE STEEL (2,294 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (2,083 applications).
Source: EPO PATSTAT, worldwide filings
9 direct subcodes
Child Classifications
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- B21D 37/01 Selection of materials
- B21D 37/02 Die constructions enabling assembly of the die parts in different ways
- B21D 37/04 Movable or exchangeable mountings for tools
- B21D 37/08 Dies with different parts for several steps in a process
- B21D 37/1 Die sets; Pillar guides
- B21D 37/14 Particular arrangements for handling and holding in place complete dies
- B21D 37/16 Heating or cooling
- B21D 37/18 Lubricating
- B21D 37/2 Making tools by operations not covered a single other subclass
Top Applicants
Top 10 applicants by patent filingsfor class B21, 2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL 2,318
- JFE STEEL JP 2,294
- POSCO (POHANG IRON AND STEEL COMPANY) KR 2,083
- NIPPON STEEL CORPORATION JP 1,650
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,631
- SMS GROUP DE 1,472
- BAOSHAN IRON & STEEL COMPANY 1,181
- SGCC(STATE GRID CORPORATION OF CHINA) 1,079
- ANHUI JIANGHUAI AUTOMOBILE 984
- HYUNDAI STEEL COMPANY KR 980