IPC Main Group
C03B 37/00 Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- GLASS; MINERAL OR SLAG WOOL
- Subclass:
- MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
Filing statistics
IPC C03B 37/00 belongs to the parent subclass C03B, which recorded 88,293 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,347 in 2013 to 8,869 in 2023 (+40%), peaking at 9,707 applications in 2020. 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
Related Keywords
manufacture of fibresobtaining FIBRES or filaments from glass, minerals or slagspreparing FLAKES from glass, minerals or slagsGLASS woolOPTICAL(LY) fibrespreparation of SLAG woolglass WOOL; slag WOOL
6 direct subcodes
Child Classifications
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- C03B 37/005 Manufacture of flakes
- C03B 37/01 Manufacture of glass fibres or filaments
- C03B 37/07 Controlling or regulating
- C03B 37/075 Manufacture of fibres or filaments consisting of different sorts of glass or characterised by shape, e.g. hollow fibres, undulated fibres
- C03B 37/08 Bushings; Spinnerettes; Nozzles or nozzle plates
- C03B 37/1 Non-chemical treatment
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