CPC Main Group
B23K 20/00 Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
Filing statistics
CPC B23K 20/00 belongs to the parent subclass B23K, which recorded 264,007 patent applications worldwide between 2013 and 2023. Annual filings grew from 15,380 in 2013 to 25,621 in 2023 (+67%), peaking at 29,742 applications in 2020. The most active applicants in class B23 are ITW (ILLINOIS TOOL WORKS) (3,642 applications), DISCO CORPORATION (3,316 applications) and FANUC (3,111 applications).
Source: EPO PATSTAT, worldwide filings
15 direct subcodes
Child Classifications
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- B23K 20/02 by means of a press
- B23K 20/04 by means of a rolling mill
- B23K 20/06 by means of high energy impulses, e.g. magnetic energy
- B23K 20/10 making use of vibrations, e.g. ultrasonic welding
- B23K 20/12 the heat being generated by friction; Friction welding
- B23K 20/14 Preventing or minimising gas access, or using protective gases or vacuum during welding (formed by material interposed between workpieces B23K20/18)
- B23K 20/16 with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
- B23K 20/18 Zonal welding by interposing weld-preventing substances between zones not to be welded
- B23K 20/20 Special methods allowing subsequent separation, e.g. of metals of high quality from scrap material
- B23K 20/22 taking account of the properties of the materials to be welded
- B23K 20/24 Preliminary treatment
- B23K 20/26 Auxiliary equipment
Top Applicants
Top 10 applicants by patent filingsfor class B23, 2013–2023, worldwide · Source: EPO PATSTAT
- ITW (ILLINOIS TOOL WORKS) US 3,642
- DISCO CORPORATION JP 3,316
- FANUC JP 3,111
- ROBERT BOSCH DE 2,711
- FANUC 2,163
- GE (GENERAL ELECTRIC COMPANY) US 2,113
- ISCAR IL 1,516
- SIEMENS DE 1,459
- LINCOLN GLOBAL US 1,433
- KOBE STEEL JP 1,423