IPC Subgroup
C03B 9/3 Details of blowing glass; Use of materials for the moulds
Introduced: September 1968
Last revised: January 2006
Full Title
Blowing glass; Production of hollow glass articles > Details of blowing glass; Use of materials for the moulds
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- GLASS; MINERAL OR SLAG WOOL
- Subclass:
- MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
10 direct subcodes
Child Classifications
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- C03B 9/31 Blowing laminated glass articles or glass with enclosures, e.g. wires, bubbles
- C03B 9/32 Giving special shapes to parts of hollow glass articles
- C03B 9/34 Glass-blowing moulds not otherwise provided for
- C03B 9/36 Blow heads; Supplying, ejecting, or controlling the air
- C03B 9/38 Means for cooling, heating, or insulating glass-blowing machines
- C03B 9/4 Gearing or controlling mechanisms specially adapted for glass-blowing machines
- C03B 9/42 Means for fusing, burning-off, or edge-melting combined with glass-blowing machines
- C03B 9/44 Means for discharging combined with glass-blowing machines, e.g. take-outs
- C03B 9/46 Means for cutting the hot glass in glass-blowing machines
- C03B 9/48 Use of materials for the moulds
Top Applicants
Top 10 applicants by patent filingsfor 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