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DIFF Subgroup
C03B 18/12

Making multilayer, coloured or armoured glass (chemical aspects C03C)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Making multilayer, coloured or armoured glass

CPC: Making multilayer, coloured or armoured glass (chemical aspects C03C)

Full Title

Full titles differ between systems:

IPC:

Shaping glass in contact with the surface of a liquid > Forming sheets > Making multilayer, coloured or armoured glass

CPC:

Shaping glass in contact with the surface of a liquid > Forming sheets > Making multilayer, coloured or armoured glass (chemical aspects C03C)

No child classifications to compare. This is a leaf node in both 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