H01S 5/222
Having a refractive index lower than that of the cladding layers or
Official title: {having a refractive index lower than that of the cladding layers or outer guiding layers}
H01S5/222 (Having a refractive index lower than that of the cladding layers or) appears on 159 US grants and 136 published applications in this corpus.
Search patents in H01S- Granted patents
- 159
- Published applications
- 136
- Assignees
- 85
- Inventors
- 356
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 4 |
| 2002 | 4 | 3 |
| 2003 | 8 | 6 |
| 2004 | 8 | 12 |
| 2005 | 9 | 11 |
| 2006 | 5 | 4 |
| 2007 | 2 | 4 |
| 2008 | 7 | 5 |
| 2009 | 6 | 8 |
| 2010 | 3 | 3 |
| 2011 | 4 | 3 |
| 2012 | 3 | 2 |
| 2013 | 5 | 7 |
| 2014 | 3 | 5 |
| 2015 | 12 | 5 |
| 2016 | 2 | 5 |
| 2017 | 6 | 6 |
| 2018 | 7 | 4 |
| 2019 | 9 | 5 |
| 2020 | 7 | 8 |
| 2021 | 4 | 8 |
| 2022 | 4 | 2 |
| 2023 | 2 | 6 |
| 2024 | 7 | 4 |
| 2025 | 3 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Method of manufacture for an ultraviolet laser diode116US 9,246,311 B1Soraa Laser Diode, Inc. · 2016
- Semiconductor laser using gallium nitride series compound semiconductor76US 6,252,894 B1Kabushiki Kaisha Toshiba · 2001
- Surface-emitting light emitting device49US 4,660,207 ANorthern Telecom Limited · 1987
- Gallium nitride-based compound semiconductor laser and method of manufacturing the same42US 5,987,048 AKabushiki Kaisha Toshiba · 1999
- Method of manufacture for an ultraviolet laser diode40US 9,711,949 B1Soraa Laser Diode, Inc. · 2017