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PCE
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DIFF Subgroup
C03B 15/02

Drawing glass sheets

Introduced: September 1968

Full Title

Drawing glass upwardly from the melt > Drawing glass sheets

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

Child Classifications

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  • C03B 15/04 from the free surface of the melt IPC+CPC Available in IPC and CPC
  • C03B 15/06 from a debiteuse IPC+CPC Available in IPC and CPC
  • C03B 15/08 by means of bars below the surface of the melt IPC+CPC Available in IPC and CPC
  • C03B 15/10 multi-layer glass sheets or glass sheets coated with coloured layers IPC+CPC Available in IPC and CPC
  • C03B 15/12 Construction of the annealing tower IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class C03,2013–2023, worldwide · Source: EPO PATSTAT

  1. CORNING US 9,559
  2. SAINT-GOBAIN GLASS FR 3,824
  3. NIPPON ELECTRIC GLASS COMPANY JP 2,792
  4. SCHOTT DE 2,029
  5. AGC JP 1,938
  6. ASAHI GLASS COMPANY JP 1,679
  7. CORNING 1,650
  8. NIPPON ELECTRIC GLASS COMPANY 1,501
  9. A G C 1,049
  10. O-I (OWENS-ILLINOIS) US 1,027