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CPC Subgroup
C03B 37/10

Non-chemical treatment (surface treatment of fibres or filaments made from glass, minerals or slags C03C25/00)

Full Title

Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags > Non-chemical treatment (surface treatment of fibres or filaments made from glass, minerals or slags C03C25/00)

3 direct subcodes

Child Classifications

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  • C03B 37/12 of fibres or filaments during winding up
  • C03B 37/16 Cutting or severing (light guides G02B6/25)

Top Applicants

Top 10 applicants by patent filingsfor class C03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CORNING US 9,559
  2. SAINT-GOBAIN GLASS FR 3,824
  3. NIPPON ELECTRIC GLASS COMPANY JP 2,792
  4. SCHOTT DE 2,029
  5. AGC JP 1,938
  6. ASAHI GLASS COMPANY JP 1,679
  7. CORNING 1,650
  8. NIPPON ELECTRIC GLASS COMPANY 1,501
  9. A G C 1,049
  10. O-I (OWENS-ILLINOIS) US 1,027