C03B 37/0146
Furnaces therefor
Official title: {Furnaces therefor, e.g. muffle tubes, furnace linings}
C03B37/0146 (Furnaces therefor) appears on 112 US grants and 115 published applications in this corpus.
Search patents in C03B- Granted patents
- 112
- Published applications
- 115
- Assignees
- 30
- Inventors
- 233
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 11 |
| 2003 | 3 | 10 |
| 2004 | 2 | 6 |
| 2005 | 7 | 11 |
| 2006 | 3 | 10 |
| 2007 | 0 | 2 |
| 2008 | 0 | 3 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 4 | 4 |
| 2012 | 0 | 2 |
| 2013 | 3 | 7 |
| 2014 | 6 | 4 |
| 2015 | 3 | 4 |
| 2016 | 7 | 6 |
| 2017 | 3 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 2 | 6 |
| 2021 | 2 | 2 |
| 2022 | 4 | 4 |
| 2023 | 5 | 2 |
| 2024 | 3 | 4 |
| 2025 | 2 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical fiber and a glass preform manufacturing method5 May 2026US 12,617,707 B2
- Manufacturing method of glass base material for optical fiber3 Mar 2026US 12,565,442 B2Shin-Etsu Chemical Co., Ltd.
- Microstructured optical fiber and preform for same having specific oxygen deficiency center and chlorine concentrations24 Feb 2026US 12,560,755 B2Heraeus Quarzglas GmbH & Co.KG
- Method for manufacturing optical fiber glass preform23 Sep 2025US 12,421,156 B2Shin-Etsu Chemical Co., Ltd.
- Apparatus for drying and/or consolidating a preform for optical fibres18 Mar 2025US 12,252,432 B2Prysmian S P A.
- Production method for glass preform and production apparatus for glass preform20 Aug 2026US 2026/0242272 A1Sumitomo Electric Industries, Ltd.
- Glass base material manufacturing device and method of manufacturing glass base material20 Aug 2026US 2026/0242273 A1Sumitomo Electric Industries, Ltd.
- Method and device for preparing semiconductor three-dimensional micro/nanostructures with tunable bandgap and semiconductor three-dimensional micro/nanostructure9 Jul 2026US 2026/0194706 A1China University of Geosciences (Wuhan)
- Manufacturing method of optical fiber preform, optical fiber preform, and optical fiber3 Jul 2025US 2025/0214880 A1Shin-Etsu Chemical Co., Ltd.
- Apparatus for drying and/or consolidating a preform for optical fibres20 Mar 2025US 2025/0091933 A1Prysmian S P A.
Most cited
By later US patents
- Method of making fluorine doped optical preform and fiber and resultant articles57US 4,629,485 ACorning Glass Works · 1986
- Heat treatment facility for synthetic vitreous silica bodies47US 5,713,979 ATSL Group PLC · 1998
- Furnace for heating glass preform for optical fiber and method for producing glass preform39US 4,969,941 ASumitomo Electric Industries, Ltd. · 1990
- Method of producing glass preform in furnace for heating glass29US 5,259,856 ASumitomo Electric Industrial, Ltd. · 1993
- Method of making a glass preform for low water peak optical fiber27US 6,904,772 B2Corning Incorporated · 2005