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PCE
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DIFF Subgroup
C03B 23/20

Uniting glass pieces by fusing without substantial reshaping

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Re-forming shaped glass > Uniting glass pieces by fusing without substantial reshaping

CPC:

Re-forming shaped glass (re-forming fibres or filaments C03B37/14) > Uniting glass pieces by fusing without substantial reshaping

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C03B 23/203 Uniting glass sheets (C03B23/24 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
  • C03B 23/22 Uniting glass lenses, e.g. forming bifocal lenses 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