DIFF Subgroup
C03B 33/023 the sheet being in a horizontal position
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Severing cooled glass > Cutting or splitting sheet glass; Apparatus or machines therefor > the sheet being in a horizontal position
CPC:
Severing cooled glass (severing glass fibres C03B37/16) > Cutting or splitting sheet glass ; Apparatus or machines therefor (C03B33/09 takes precedence; glass-cutting tools C03B33/10) > the sheet being in a horizontal position
Of 5 combined children, 4 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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- C03B 33/027 Scoring tool holders; Driving mechanisms therefor since 1990 IPC+CPC Available in IPC and CPC
- C03B 33/03 Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations since 1990 IPC+CPC Available in IPC and CPC
- C03B 33/033 Apparatus for opening score lines in glass sheets since 1990 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