CPC Subgroup
C03B 15/02 Drawing glass sheets
Full Title
Drawing glass upwardly from the melt > Drawing glass sheets
5 direct subcodes
Child Classifications
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- C03B 15/04 from the free surface of the melt
- C03B 15/06 from a debiteuse
- C03B 15/08 by means of bars below the surface of the melt
- C03B 15/10 multi-layer glass sheets or glass sheets coated with coloured layers
- C03B 15/12 Construction of the annealing tower
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