H01S 5/1234
Actively induced grating
Official title: {Actively induced grating, e.g. acoustically or electrically induced}
H01S5/1234 (Actively induced grating) appears on 40 US grants and 44 published applications in this corpus.
Search patents in H01S- Granted patents
- 40
- Published applications
- 44
- Assignees
- 39
- Inventors
- 118
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 2 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 3 |
| 2014 | 2 | 2 |
| 2015 | 3 | 4 |
| 2016 | 2 | 2 |
| 2017 | 1 | 1 |
| 2018 | 3 | 4 |
| 2019 | 4 | 2 |
| 2020 | 3 | 7 |
| 2021 | 4 | 4 |
| 2022 | 3 | 4 |
| 2023 | 1 | 2 |
| 2024 | 2 | 0 |
| 2025 | 0 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Semiconductor Laser6 Feb 2025US 2025/0047069 A1Nippon Telegraph and Telephone Corporation
- Narrow linewidth semiconductor laser21 Dec 2023US 2023/0411929 A1Ioptis Corp.
- Segmented contact for current control in semiconductor lasers and optical amplifiers23 Mar 2023US 2023/0088485 A1Freedom Photonics LLC
- Bragg grating and method for manufacturing the same and distributed feedback laser device8 Dec 2022US 2022/0393432 A1Xiamen Sanan Integrated Circuit Co., Ltd.
Most cited
By later US patents
- Unipolar semiconductor laser45US 5,509,025 AAT&T Corp. · 1996
- Two dimensional distributed feedback devices and lasers39US 3,970,959 AThe Regents of the University of California · 1976
- Stack-type diode laser device23US 7,142,571 B22006
- Tunable semiconductor laser16US 4,532,632 AOmron Tateisi Electronics Co. · 1985
- Laser/amplifier/detector diode13US 4,327,962 A1982