CPC Subgroup
C03C 1/04 Opacifiers, e.g. fluorides or phosphates; Pigments
Full Title
Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels > Opacifiers, e.g. fluorides or phosphates; Pigments
1 direct subcode
Child Classifications
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- C03C 1/06 to produce non-uniformly pigmented, e.g. speckled, marbled, or veined products
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