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DIFF Subgroup
C03B 9/32

Giving special shapes to parts of hollow glass articles

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 > Giving special shapes to parts of hollow glass articles

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 > Giving special shapes to parts of hollow glass articles

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C03B 9/325 Forming screw-threads or lips at the mouth of hollow glass articles; Neck moulds since 1980 IPC+CPC Available in IPC and CPC
  • C03B 9/33 Making hollow glass articles with feet or projections; Moulds therefor since 1980 IPC+CPC Available in IPC and CPC
  • C03B 9/335 Forming bottoms to blown hollow glass articles; Bottom moulds 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