IPC Main Group
B21G 3/00 Making pins, nails, or the like
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- MAKING NEEDLES, PINS OR NAILS OF METAL
Related Keywords
making BRADSCUTTING wire in the making of pins or nailsmaking NAIL(S)
9 direct subcodes
Child Classifications
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- B21G 3/02 of pins of the kind used in the tailoring trade or the household
- B21G 3/06 of nails with shoulders
- B21G 3/08 of nails with head and two or more shanks or split shanks
- B21G 3/1 of undulated nails or pins
- B21G 3/12 Upsetting; Forming heads
- B21G 3/14 Reducing diameter of parts otherwise than by rolling
- B21G 3/16 Pointing, with or without cutting
- B21G 3/18 by operations not restricted to one of the groups
- B21G 3/32 Feeding material to be worked to nail or pin making machines
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