C03B 2201/20
Doped with non-metals other than boron or fluorine
Official title: doped with non-metals other than boron or fluorine
C03B2201/20 (Doped with non-metals other than boron or fluorine) appears on 592 US grants and 577 published applications in this corpus.
Search patents in C03B- Granted patents
- 592
- Published applications
- 577
- Assignees
- 171
- Inventors
- 1,090
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 14 | 8 |
| 2002 | 32 | 45 |
| 2003 | 27 | 56 |
| 2004 | 42 | 38 |
| 2005 | 24 | 38 |
| 2006 | 20 | 24 |
| 2007 | 11 | 18 |
| 2008 | 14 | 20 |
| 2009 | 17 | 21 |
| 2010 | 13 | 21 |
| 2011 | 23 | 21 |
| 2012 | 14 | 21 |
| 2013 | 19 | 21 |
| 2014 | 18 | 16 |
| 2015 | 21 | 23 |
| 2016 | 19 | 27 |
| 2017 | 25 | 24 |
| 2018 | 12 | 13 |
| 2019 | 12 | 26 |
| 2020 | 11 | 15 |
| 2021 | 16 | 14 |
| 2022 | 16 | 16 |
| 2023 | 23 | 20 |
| 2024 | 8 | 13 |
| 2025 | 9 | 13 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Titania-silica glass with uniform hydroxyl concentration11 Aug 2026US 12,703,655 B2Corning Incorporated
- Polarization maintaining optical fiber and polarization maintaining optical fiber manufacturing method11 Aug 2026US 12,704,672 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 glass preform and method for manufacturing optical fiber glass preform7 Apr 2026US 12,595,203 B2Shin-Etsu Chemical Co., Ltd.
- Reservoir, method for producing optical fiber, and device for producing optical fiber18 Jun 2026US 2026/0167553 A1Sumitomo Electric Industries, Ltd.
- Multicore optical fiber4 Jun 2026US 2026/0153668 A1Sumitomo Electric Industries, Ltd.
- Homogenous silica-titania glass21 May 2026US 2026/0140435 A1Corning Incorporated
- Homogenous silica-titania glass21 May 2026US 2026/0140436 A1Corning Incorporated
- Method for producing optical fiber preform, and optical fiber preform26 Mar 2026US 2026/0084997 A1Sumitomo Electric Industries, Ltd.
Most cited
By later US patents
- Optical fiber and method for making such fiber230US 7,313,312 B2Corning Incorporated · 2007
- Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers222US 8,213,758 B2Imra America, Inc. · 2012
- Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers219US 8,542,968 B2Imra America, Inc. · 2013
- GRIN fiber lenses160US 6,542,665 B2Lucent Technologies Inc. · 2003
- Method of making fused silica by decomposing siloxanes106US 5,043,002 ACorning Incorporated · 1991