IPC Main Group
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
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
Filing statistics
IPC C03C 10/00 belongs to the parent subclass C03C, which recorded 106,119 patent applications worldwide between 2013 and 2023. Annual filings grew from 8,013 in 2013 to 8,692 in 2023 (+8%), peaking at 11,106 applications in 2018. The most active applicants in class C03 are CORNING (8,800 applications), SAINT-GOBAIN GLASS (3,535 applications) and NIPPON ELECTRIC GLASS COMPANY (2,675 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
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- C03C 10/02 Non-silica and non-silicate crystalline phase, e.g. spinel, barium titanate
- C03C 10/04 Silicate or polysilicate crystalline phase, e.g. mullite, diopside, sphene, plagioclase
- C03C 10/14 Silica crystalline phase, e.g. stuffed quartz, cristobalite
- C03C 10/16 Halogen-containing crystalline phase
Top Applicants
Top 10 applicants by patent filingsfor class C03, 2013–2023, worldwide · Source: EPO PATSTAT
- CORNING US 8,800
- SAINT-GOBAIN GLASS FR 3,535
- NIPPON ELECTRIC GLASS COMPANY JP 2,675
- NIPPON ELECTRIC GLASS COMPANY 2,616
- AGC JP 1,911
- SCHOTT DE 1,846
- ASAHI GLASS COMPANY JP 1,632
- CORNING 1,556
- A G C 1,250
- SEKISUI CHEMICAL COMPANY JP 1,087