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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 9/36 Blow heads; Supplying, ejecting, or controlling the air
  • C03B 9/38 Means for cooling, heating, or insulating glass-blowing machines
  • C03B 9/42 Means for fusing, burning-off, or edge-melting combined with glass-blowing machines
  • 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

  1. CORNING US 8,800
  2. SAINT-GOBAIN GLASS FR 3,535
  3. NIPPON ELECTRIC GLASS COMPANY JP 2,675
  4. NIPPON ELECTRIC GLASS COMPANY 2,616
  5. AGC JP 1,911
  6. SCHOTT DE 1,846
  7. ASAHI GLASS COMPANY JP 1,632
  8. CORNING 1,556
  9. A G C 1,250
  10. SEKISUI CHEMICAL COMPANY JP 1,087