H01S 3/131
By controlling the active medium
Official title: by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
H01S3/131 (By controlling the active medium) appears on 809 US grants and 702 published applications in this corpus.
Search patents in H01S- Granted patents
- 809
- Published applications
- 702
- Assignees
- 328
- Inventors
- 1,562
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 10 | 0 |
| 1991 | 8 | 0 |
| 1992 | 11 | 0 |
| 1993 | 15 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 13 | 0 |
| 1998 | 14 | 0 |
| 1999 | 19 | 0 |
| 2000 | 16 | 0 |
| 2001 | 20 | 8 |
| 2002 | 31 | 46 |
| 2003 | 31 | 37 |
| 2004 | 41 | 32 |
| 2005 | 24 | 38 |
| 2006 | 26 | 27 |
| 2007 | 24 | 20 |
| 2008 | 21 | 19 |
| 2009 | 15 | 18 |
| 2010 | 22 | 18 |
| 2011 | 11 | 15 |
| 2012 | 10 | 14 |
| 2013 | 12 | 16 |
| 2014 | 19 | 18 |
| 2015 | 26 | 37 |
| 2016 | 29 | 32 |
| 2017 | 38 | 33 |
| 2018 | 25 | 46 |
| 2019 | 36 | 29 |
| 2020 | 27 | 41 |
| 2021 | 31 | 36 |
| 2022 | 30 | 29 |
| 2023 | 26 | 29 |
| 2024 | 27 | 25 |
| 2025 | 17 | 22 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Intracavity frequency conversion in solid-state laser resonator with end-pumping1 Sep 2026US 12,725,996 B2Coherent LaserSystems GmbH & Co. KG
- Passive Q-switched lasers and methods for operation and manufacture thereof7 Jul 2026US 12,676,453 B2pTriEye Ltd.
- Excimer laser with improved beam uniformity and stability16 Jun 2026US 12,658,666 B2Coherent LaserSystems GmbH & Co. KG
- Passive high energy Q-switched laser system with optically synchronized multi-stage/multi-pass amplification9 Jun 2026US 12,651,883 B2Candela Corporation
- Laser reference frequency source stabilized by optical self-injection locking2 Jun 2026US 12,646,902 B1Hqphotonics Inc.
- Device and method for frequency stabilization of a laser27 Aug 2026US 2026/0254198 A1Ferdinand-Braun-Institut Ggmbh, Leibniz-Institut FüR HöChstfrequenztechnik
- Excimer laser apparatus and electronic device manufacturing method30 Jul 2026US 2026/0221711 A1Gigaphoton Inc.
- Laser chamber, laser device, and electronic device manufacturing method16 Jul 2026US 2026/0204859 A1Gigaphoton Inc.
- Light-emitting device16 Jul 2026US 2026/0204865 A1Nippon Telegraph and Telephone Corporation
- Gas laser device and electronic device manufacturing method9 Jul 2026US 2026/0196790 A1Gigaphoton Inc.
Most cited
By later US patents
- Laser driver and control circuit455US 4,950,268 AXintec Inc. · 1990
- Reliable modular production quality narrow-band high REP rate excimer laser171US 6,128,323 ACymer, Inc. · 2000
- Reliable, modular, production quality narrow-band high rep rate F.sub.2 laser160US 6,018,537 ACymer, Inc. · 2000
- Pulse energy control for excimer laser146US 6,005,879 ACymer, Inc. · 1999
- Very narrow band, two chamber, high rep rate gas discharge laser system144US 6,567,450 B2Cymer, Inc. · 2003