H01S 3/0078
Frequency filtering
Official title: {Frequency filtering}
H01S3/0078 (Frequency filtering) appears on 466 US grants and 495 published applications in this corpus.
Search patents in H01S- Granted patents
- 466
- Published applications
- 495
- Assignees
- 274
- Inventors
- 1,085
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 0 |
| 2002 | 11 | 15 |
| 2003 | 7 | 7 |
| 2004 | 9 | 15 |
| 2005 | 9 | 25 |
| 2006 | 17 | 14 |
| 2007 | 12 | 12 |
| 2008 | 17 | 12 |
| 2009 | 11 | 9 |
| 2010 | 15 | 22 |
| 2011 | 15 | 15 |
| 2012 | 11 | 16 |
| 2013 | 23 | 14 |
| 2014 | 28 | 25 |
| 2015 | 25 | 28 |
| 2016 | 17 | 25 |
| 2017 | 33 | 25 |
| 2018 | 16 | 35 |
| 2019 | 33 | 24 |
| 2020 | 20 | 25 |
| 2021 | 20 | 23 |
| 2022 | 25 | 37 |
| 2023 | 17 | 14 |
| 2024 | 18 | 21 |
| 2025 | 20 | 27 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for the temporal and spectral characterization of the amplitude and phase of ultrashort laser pulses12 May 2026US 12,627,110 B2Sphere Ultrafast Photonics Sl
- Method for servocontrolling an optical device comprising a laser and a cavity, making it possible to compensate for an amplitude modulation introduced by a phase modulator12 May 2026US 12,627,111 B2Centre National De La Recherche Scientifique
- Counter-pumped fiber laser array system5 May 2026US 12,620,765 B2Optical Engines, Inc.
- Defensive laser amplification system5 May 2026US 12,620,767 B1Applied Energetics, Inc.
- Atomic clock system and frequency stabilization device28 Apr 2026US 12,613,496 B2Shimadzu Corporation
- Generating a plurality of pulse trains from a micro comb laser13 Aug 2026US 2026/0238374 A1NEWPHOTONICS Ltd.
- Mid-infrared chirped pulse amplifier30 Jul 2026US 2026/0221709 A1University of Central Florida Research Foundation, Inc.
- Integrated ceramic waveguide optical amplifiers and laser devices9 Jul 2026US 2026/0196793 A1
- Multi-Core Fiber Gain Flattening Filter and Shape Correcting Filter9 Jul 2026US 2026/0196796 A1Subcom, LLC
- All-Fiber Laser System With Intrinsic Isolation Of Backward-Propagating Optical Radiation25 Jun 2026US 2026/0180277 A1Lightel Technologies, Inc.
Most cited
By later US patents
- Ultraviolet laser apparatus and exposure apparatus using same250US 7,023,610 B2Nikon Corporation · 2006
- Method and apparatus for performing optical imaging using frequency-domain interferometry229US 7,733,497 B2The General Hospital Corporation · 2010
- Lidar system181US 9,958,545 B2Luminar Technologies, Inc. · 2018
- Lidar system149US 9,857,468 B1Luminar Technologies, Inc. · 2018
- Optical amplifier having first and second stages and an attenuator controlled based on the gains of the first and second stages147US 6,049,413 ACiena Corporation · 2000