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DIFF Subgroup
C03B 9/34

Glass-blowing moulds not otherwise provided for

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Blowing glass; Production of hollow glass articles > Details of blowing glass; Use of materials for the moulds > Glass-blowing moulds not otherwise provided for

CPC:

Blowing glass; Production of hollow glass articles > Details of blowing glass (for blowing with the mouth C03B9/02); Use of materials for the moulds > Glass-blowing moulds not otherwise provided for

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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  • C03B 9/342 CPC only CPC only
  • C03B 9/344 CPC only CPC only
  • C03B 9/347 Construction of the blank or blow mould since 1980 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