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DIFF Main Group
C03B 9/00

Blowing glass; Production of hollow glass articles

Introduced: September 1968

IPC and CPC are identically structured here. All 9 subcodes exist in both systems.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C03B 9/08 Finish-blowing with compressed air of blanks blown with the mouth IPC+CPC Available in IPC and CPC
  • C03B 9/10 Blowing glass cylinders for sheet manufacture IPC+CPC Available in IPC and CPC
  • C03B 9/12 starting from a ribbon of glass; Ribbon machines IPC+CPC Available in IPC and CPC
  • C03B 9/28 in machines of the endless-chain type (C03B9/12 takes precedence) 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