CPC Subgroup
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
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