CPC Subgroup Additional Only
C03B 2205/62 Heating means for drawing
Full Title
Fibre drawing or extruding details > Optical fibre draw furnaces > Heating means for drawing
6 direct subcodes
Child Classifications
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- C03B 2205/63 Ohmic resistance heaters, e.g. carbon or graphite resistance heaters
- C03B 2205/64 Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type
- C03B 2205/66 Microwave or similar electromagnetic wave heating, e.g. resonant cavity type
- C03B 2205/67 Laser heating
- C03B 2205/68 Hot gas, e.g. plasma, flame, burner
- C03B 2205/69 Auxiliary thermal treatment immediately prior to drawing, e.g. pre-heaters, laser-assisted resistance heaters
Top Applicants
Top 10 applicants by patent filingsfor class C03, 2013–2023, worldwide · Source: EPO PATSTAT
- CORNING US 9,559
- SAINT-GOBAIN GLASS FR 3,824
- NIPPON ELECTRIC GLASS COMPANY JP 2,792
- SCHOTT DE 2,029
- AGC JP 1,938
- ASAHI GLASS COMPANY JP 1,679
- CORNING 1,650
- NIPPON ELECTRIC GLASS COMPANY 1,501
- A G C 1,049
- O-I (OWENS-ILLINOIS) US 1,027