CPC Subgroup Additional Only
C03B 2201/30 doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
Full Title
Type of glass produced > Doped silica-based glasses > doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
7 direct subcodes
Child Classifications
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- C03B 2201/31 doped with germanium
- C03B 2201/32 doped with aluminium (C03B2201/36 takes precedence)
- C03B 2201/34 doped with rare earth metals, i.e. with Sc, Y or lanthanides, e.g. for laser-amplifiers
- C03B 2201/40 doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
- C03B 2201/50 doped with alkali metals
- C03B 2201/54 doped with beryllium, magnesium or alkaline earth metals
- C03B 2201/58 doped with metals in non-oxide form, e.g. CdSe
Top Applicants
Top 10 applicants by patent filingsfor class C03, 2013–2023, worldwide · Source: EPO PATSTAT
- CORNING US 9,559
- SAINT-GOBAIN GLASS FR 3,824
- NIPPON ELECTRIC GLASS COMPANY JP 2,792
- SCHOTT DE 2,029
- AGC JP 1,938
- ASAHI GLASS COMPANY JP 1,679
- CORNING 1,650
- NIPPON ELECTRIC GLASS COMPANY 1,501
- A G C 1,049
- O-I (OWENS-ILLINOIS) US 1,027