CPC Main Group Additional Only
B23B 2228/00 Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
Filing statistics
CPC B23B 2228/00 belongs to the parent subclass B23B, which recorded 66,933 patent applications worldwide between 2013 and 2023. Annual filings declined from 4,756 in 2013 to 4,707 in 2023 (-1%), peaking at 7,816 applications in 2018. 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
16 direct subcodes
Child Classifications
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- B23B 2228/04 applied by chemical vapour deposition [CVD]
- B23B 2228/08 applied by physical vapour deposition [PVD]
- B23B 2228/10 Coatings
- B23B 2228/12 Abrasive
- B23B 2228/16 Shape memory alloys
- B23B 2228/21 Cast, i.e. In the form of a casting
- B23B 2228/24 Hard, i.e. after being hardened
- B23B 2228/28 Soft
- B23B 2228/32 Explosive
- B23B 2228/36 Multi-layered
- B23B 2228/41 Highly conductive
- B23B 2228/44 Materials having grain size less than 1 micrometre, e.g. nanocrystalline
- B23B 2228/48 Self-luminous, i.e. light-emitting, e.g. fluorescent
- B23B 2228/52 Solid lubricants
- B23B 2228/56 Two phase materials
- B23B 2228/61 Materials comprising whiskers
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