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IPC Subgroup
C03C 25/48

with two or more coatings having different compositions

Introduced: January 2000

Last revised: January 2006

Full Title

Surface treatment of fibres or filaments made from glass, minerals or slags > Coating > with two or more coatings having different compositions

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 25/48 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

3 direct subcodes

Child Classifications

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  • C03C 25/5 Coatings containing organic materials only
  • C03C 25/52 Coatings containing inorganic materials only
  • C03C 25/54 Combinations of one or more coatings containing organic materials only with one or more coatings containing inorganic materials only

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