DIFF Subgroup
C03B 18/02 Forming sheets
Introduced: September 1968
Full Title
Shaping glass in contact with the surface of a liquid > Forming sheets
IPC and CPC are identically structured here. All 6 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
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- C03B 18/04 Changing or regulating the dimensions of the molten glass ribbon since 1980 IPC+CPC Available in IPC and CPC
- C03B 18/12 Making multilayer, coloured or armoured glass (chemical aspects C03C) since 1980 IPC+CPC Available in IPC and CPC
- C03B 18/14 Changing the surface of the glass ribbon, e.g. roughening (by chemical methods C03C) since 1980 IPC+CPC Available in IPC and CPC
- C03B 18/16 Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall since 1980 IPC+CPC Available in IPC and CPC
- C03B 18/18 Controlling or regulating the temperature of the float bath; Composition or purification of the float bath since 1980 IPC+CPC Available in IPC and CPC
- C03B 18/20 Composition of the atmosphere above the float bath; Treating or purifying the atmosphere above the float bath 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