C03B 2201/31
Doped with germanium
Official title: doped with germanium
C03B2201/31 (Doped with germanium) appears on 453 US grants and 380 published applications in this corpus.
Search patents in C03B- Granted patents
- 453
- Published applications
- 380
- Assignees
- 148
- Inventors
- 937
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 9 | 5 |
| 2002 | 24 | 38 |
| 2003 | 26 | 35 |
| 2004 | 28 | 30 |
| 2005 | 20 | 32 |
| 2006 | 16 | 20 |
| 2007 | 8 | 15 |
| 2008 | 17 | 15 |
| 2009 | 8 | 18 |
| 2010 | 9 | 14 |
| 2011 | 12 | 19 |
| 2012 | 16 | 15 |
| 2013 | 17 | 13 |
| 2014 | 16 | 8 |
| 2015 | 11 | 18 |
| 2016 | 14 | 9 |
| 2017 | 11 | 13 |
| 2018 | 6 | 6 |
| 2019 | 9 | 8 |
| 2020 | 7 | 7 |
| 2021 | 4 | 8 |
| 2022 | 4 | 7 |
| 2023 | 10 | 12 |
| 2024 | 4 | 7 |
| 2025 | 4 | 8 |
| 2026 | 5 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method11 Aug 2026US 12,704,672 B2Sumitomo Electric Industries, Ltd.
- Cleaning step to remove metals or metal oxides from porous glass body19 May 2026US 12,630,459 B2Corning Incorporated
- Optical fiber glass preform and method for manufacturing optical fiber glass preform7 Apr 2026US 12,595,203 B2Shin-Etsu Chemical Co., Ltd.
- Optical fiber preform24 Mar 2026US 12,583,782 B2Shin-Etsu Chemical Co., Ltd.
- Optical fiber manufacturing method and apparatus10 Mar 2026US 12,570,566 B2Furukawa Electric Co., Ltd.
- Optical fiber preform manufacturing method and optical fiber manufacturing method2 Oct 2025US 2025/0304486 A1Furukawa Electric Co., Ltd.
- Preform for multicore optical fibers25 Sep 2025US 2025/0298182 A1Corning Incorporated
- Hollow core optical fiber, hollow core optical fiber preform, and method of making the same28 Aug 2025US 2025/0271612 A1Corning Incorporated
- Preforms for Speckle-Free Output Optical Fibers Having Structured Silica Sections, Methods of Such Preform Manufacture, and Improved Speckle-Free Output Optical Fibers31 Jul 2025US 2025/0244525 A1biolitec Holding GmbH & Co KG
- Slow cooling of reduced cladding diameter optical fibers24 Apr 2025US 2025/0128978 A1Corning Incorporated
Most cited
By later US patents
- Optical fiber and method for making such fiber230US 7,313,312 B2Corning Incorporated · 2007
- Single mode optical fiber161US 7,623,747 B2Draka Comteq B.V. · 2009
- GRIN fiber lenses160US 6,542,665 B2Lucent Technologies Inc. · 2003
- Method of making fused silica by decomposing siloxanes106US 5,043,002 ACorning Incorporated · 1991
- Cladding-pumped fiber structures105US 5,949,941 ALucent Technologies Inc. · 1999