C03B 2205/64
Induction furnaces, i.e. hf/rf coil
Official title: Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type
C03B2205/64 (Induction furnaces, i.e. hf/rf coil) appears on 32 US grants and 7 published applications in this corpus.
Search patents in C03B- Granted patents
- 32
- Published applications
- 7
- Assignees
- 21
- Inventors
- 74
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
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| 2005 | 0 | 2 |
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| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
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| 2020 | 0 | 0 |
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| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Inductive furnace with rotating susceptor for high precision waveguide glass draw23 Dec 2025US 12,503,386 B2Heraeus Quartz North America LLC
- Heating apparatus of induction furnace used for stretching large-diameter preformed rods of optical fibers10 Feb 2015US 8,950,218 B2Yangze Optical Fibre and Cable Company, Ltd.
- Method and induction furnace for drawing large diameter preforms to optical fibres19 Oct 2010US 7,814,767 B2Prysmian Cavi E Sistemi Energia S.R.L.
- Optical fiber draw furnace having a SiC or Silicon Nitride tube9 Dec 2003US 6,658,897 B2Alcatel
- Method of reducing break sources in drawn fibers by active oxidation of contaminants in a reducing atmosphere12 Feb 2002US 6,345,519 B1Corning Incorporated
- Inductive furnace with rotating susceptor for high precision waveguide glass draw22 Jun 2023US 2023/0192526 A1Heraeus Quartz North America LLC
- Heating apparatus of induction furnace used for stretching large-diameter preformed rods of optical fibers13 Feb 2014US 2014/0041416 A1Yangze Optical Fibre and Cable Company, Ltd.
- Method of and apparatus for producing optical fiber31 Mar 2005US 2005/0066690 A1Sumitomo Electric Industries, Ltd.
- Insulation of a heating element in a furnace for drawing optical fibers27 Jan 2005US 2005/0016219 A1Photonium Oy
- Apparatus for drawing a fiber1 Aug 2002US 2002/0100297 A1Alcatel
Most cited
By later US patents
- Optical fiber draw furnace68US 5,410,567 ACorning Incorporated · 1995
- Single mode, single polarization optical fiber with accessible guiding region and method of forming directional coupler using same54US 4,669,814 AAndrew Corporation · 1987
- Method for forming refractory fibers by laser energy44US 3,944,640 AArthur D. Little, Inc. · 1976
- Self-aligning optical fiber directional coupler and fiber-ring optical rotation sensor using same40US 4,755,021 AAndrew Corporation · 1988
- Optical fiber and laser interface device28US 4,784,454 AAndrew Corporation · 1988