C03C 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
Description
C03C covers the chemical composition, formulation, and treatment of glasses, glazes, and vitreous enamels, including the specification of raw materials and additives that impart desired optical, thermal, or chemical properties. It also encompasses surface modification techniques applied to glass products and glass-derived fibres or filaments, such as coating, strengthening, or chemical treatments. Additionally, this subclass addresses methods and materials for joining glass to glass or to other substrates through adhesive, thermal, or mechanical bonding processes. Related fibre and filament production itself is classified elsewhere under C03B.
27 direct subcodes
Child Classifications
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- C03C 1/00 Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C 10/00 Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C 11/00 Multi-cellular glass
- C03C 12/00 Powdered glass (C03C8/02 takes precedence); Bead compositions
- C03C 13/00 Fibre or filament compositions (manufacture of fibres or filaments C03B37/00)
- C03C 14/00 Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix (devitrified glass ceramics C03C10/00)
- C03C 15/00 Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00)
- C03C 17/00 Surface treatment of glass, not in the form of fibres or filaments, by coating (optical coatings of optical elements G02B1/10)
- C03C 19/00 Surface treatment of glass, not in the form of fibres or filaments, by mechanical means (sand-blasting, grinding, or polishing glass B24)
- C03C 21/00 Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C 2201/00 Glass compositions
- C03C 2203/00 Production processes
- C03C 2204/00 Glasses, glazes or enamels with special properties
- C03C 2205/00 Compositions applicable for the manufacture of vitreous enamels or glazes
- C03C 2207/00 Compositions specially applicable for the manufacture of vitreous enamels
- C03C 2209/00 Compositions specially applicable for the manufacture of vitreous glazes
- C03C 2213/00 Glass fibres or filaments
- C03C 2214/00 Nature of the non-vitreous component
- C03C 2217/00 Coatings on glass
- C03C 2218/00 Methods for coating glass
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