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IPC Main Group
C03C 8/00

Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions

Introduced: January 1985

Last revised: January 2006

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
GLASS; MINERAL OR SLAG WOOL
Subclass:
CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

Additional Content

Cold glazes for ceramics

Related Keywords

compositions of vitreous ENAMELS or glazescompositions of glazes or vitreous enamels

4 direct subcodes

Child Classifications

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  • C03C 8/22 containing two or more distinct frits having different compositions
  • C03C 8/24 Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders

Top Applicants

Top 10 applicants by patent filingsfor 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