C03B 37/01446
Thermal after-treatment of preforms
Official title: {Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering (C03B37/01853 takes precedence)}
C03B37/01446 (Thermal after-treatment of preforms) appears on 377 US grants and 348 published applications in this corpus.
Search patents in C03B- Granted patents
- 377
- Published applications
- 348
- Assignees
- 71
- Inventors
- 658
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 14 | 0 |
| 1990 | 10 | 0 |
| 1991 | 12 | 0 |
| 1992 | 12 | 0 |
| 1993 | 13 | 0 |
| 1994 | 8 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 2 |
| 2002 | 12 | 32 |
| 2003 | 8 | 22 |
| 2004 | 16 | 19 |
| 2005 | 15 | 23 |
| 2006 | 6 | 13 |
| 2007 | 4 | 14 |
| 2008 | 3 | 12 |
| 2009 | 5 | 6 |
| 2010 | 4 | 9 |
| 2011 | 10 | 10 |
| 2012 | 3 | 14 |
| 2013 | 13 | 13 |
| 2014 | 8 | 7 |
| 2015 | 5 | 14 |
| 2016 | 12 | 17 |
| 2017 | 14 | 15 |
| 2018 | 12 | 9 |
| 2019 | 4 | 15 |
| 2020 | 8 | 15 |
| 2021 | 15 | 12 |
| 2022 | 11 | 13 |
| 2023 | 15 | 13 |
| 2024 | 6 | 8 |
| 2025 | 5 | 12 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing fluorine-containing silica glass2 Jun 2026US 12,643,812 B2Sumitomo Electric Industries, Ltd.
- Method for making halogen doped optical element26 May 2026US 12,637,384 B2Corning Incorporated
- Cleaning step to remove metals or metal oxides from porous glass body19 May 2026US 12,630,459 B2Corning Incorporated
- Optical fiber and a glass preform manufacturing method5 May 2026US 12,617,707 B2
- Optical fiber glass preform and method for manufacturing optical fiber glass preform7 Apr 2026US 12,595,203 B2Shin-Etsu Chemical Co., Ltd.
- Manufacturing method of optical fiber preform, and optical fiber preform10 Sep 2026US 2026/0265113 A1Sumitomo Electric Industries, Ltd.
- 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.
- Reduction of loss and improved long-term reliability of hollow core fibers30 Jul 2026US 2026/0217591 A1
- 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)
Most cited
By later US patents
- Method of making fused silica by decomposing siloxanes106US 5,043,002 ACorning Incorporated · 1991
- Microstructured optical fibers and methods105US 7,450,806 B2Corning Incorporated · 2008
- Method of making optical waveguides86US 3,933,454 ACorning Glass Works · 1976
- Low viscosity core glass optical fiber71US 4,413,882 ACorning Glass Works · 1983
- Method of making fused silica70US 5,152,819 ACorning Incorporated · 1992