C03B 37/027 Fibres composed of different sorts of glass, (C03B37/0253, C03B37/028 take precedence)
Introduced: January 1985
Title
Titles differ between systems:
IPC: Fibres composed of different sorts of glass, e.g. fibre optics
CPC: Fibres composed of different sorts of glass, (C03B37/0253, C03B37/028 take precedence)
Full Title
Full titles differ between systems:
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 reheated softened tubes, rods, fibres or filaments > Fibres composed of different sorts of glass, e.g. fibre optics
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 reheated softened tubes, rods, fibres or filaments > Fibres composed of different sorts of glass, (C03B37/0253, C03B37/028 take precedence)
Of 9 combined children, 0 exist in both systems.
9 codes are CPC-only extensions.
Child Classifications
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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