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DIFF Subgroup
C03B 37/028

Drawing fibre bundles, e.g. for making fibre bundles of multifibres

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags > Manufacture of glass fibres or filaments > by drawing or extruding > from reheated softened tubes, rods, fibres or filaments > Drawing fibre bundles, e.g. for making fibre bundles of multifibres

CPC:

Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags > Manufacture of glass fibres or filaments > by drawing or extruding, > from reheated softened tubes, rods, fibres or filaments > Drawing fibre bundles, e.g. for making fibre bundles of multifibres

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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