C03C 17/34 with at least two coatings having different compositions (C03C17/44 takes precedence)
Introduced: January 1980
Title
Titles differ between systems:
IPC: with at least two coatings having different compositions
CPC: with at least two coatings having different compositions (C03C17/44 takes precedence)
Full Title
Full titles differ between systems:
Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating > with at least two coatings having different compositions
Surface treatment of glass, not in the form of fibres or filaments, by coating (optical coatings of optical elements G02B1/10) > with at least two coatings having different compositions (C03C17/44 takes precedence)
Of 4 combined children, 2 exist in both systems.
2 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- C03C 17/42 at least one coating of an organic material and at least one non-metal coating since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C03,2013–2023, worldwide · Source: EPO PATSTAT
- CORNING US 8,800
- SAINT-GOBAIN GLASS FR 3,535
- NIPPON ELECTRIC GLASS COMPANY JP 2,675
- NIPPON ELECTRIC GLASS COMPANY 2,616
- AGC JP 1,911
- SCHOTT DE 1,846
- ASAHI GLASS COMPANY JP 1,632
- CORNING 1,556
- A G C 1,250
- SEKISUI CHEMICAL COMPANY JP 1,087
Top Applicants (CPC)
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