C03B 37/022 from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres
Full Title
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags > Manufacture of glass fibres or filaments > by drawing or extruding, > from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres
Filing statistics
CPC C03B 37/022 belongs to the parent subclass C03B, which recorded 57,876 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,190 in 2013 to 4,485 in 2023 (+7%), peaking at 6,433 applications in 2018. The most active applicants in class C03 are CORNING (9,559 applications), SAINT-GOBAIN GLASS (3,824 applications) and NIPPON ELECTRIC GLASS COMPANY (2,792 applications).
Source: EPO PATSTAT, worldwide filings
1 direct subcode
Child Classifications
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- C03B 37/023 Fibres composed of different sorts of glass,
Top Applicants
Top 10 applicants by patent filingsfor class C03, 2013–2023, worldwide · Source: EPO PATSTAT
- CORNING US 9,559
- SAINT-GOBAIN GLASS FR 3,824
- NIPPON ELECTRIC GLASS COMPANY JP 2,792
- SCHOTT DE 2,029
- AGC JP 1,938
- ASAHI GLASS COMPANY JP 1,679
- CORNING 1,650
- NIPPON ELECTRIC GLASS COMPANY 1,501
- A G C 1,049
- O-I (OWENS-ILLINOIS) US 1,027