CPC Main Group
C30B 33/00 After-treatment of single crystals or homogeneous polycrystalline material with defined structure (C30B31/00 takes precedence)
Filing statistics
CPC C30B 33/00 belongs to the parent subclass C30B, which recorded 47,784 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,425 in 2013 to 5,586 in 2023 (+63%), peaking at 5,757 applications in 2022. The most active applicants in class C30 are CHINESE ACADEMY OF SCIENCES (1,052 applications), SUMCO CORPORATION (881 applications) and APPLIED MATERIALS (871 applications).
Source: EPO PATSTAT, worldwide filings
5 direct subcodes
Child Classifications
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- C30B 33/02 Heat treatment (C30B33/04, C30B33/06 take precedence)
- C30B 33/04 using electric or magnetic fields or particle radiation
- C30B 33/06 Joining of crystals
- C30B 33/08 Etching
Top Applicants
Top 10 applicants by patent filingsfor class C30, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 1,052
- SUMCO CORPORATION JP 881
- APPLIED MATERIALS US 871
- SUMITOMO ELECTRIC INDUSTRIES JP 682
- SHIN ETSU HANDOTAI COMPANY JP 649
- SHIN-ETSU CHEMICAL COMPANY JP 506
- SUMCO CORPORATION 500
- SILTRONIC DE 491
- GLOBALWAFERS COMPANY TW 458
- NGK INSULATORS JP 379