H01S 5/3418
Using transitions from higher quantum levels
Official title: {using transitions from higher quantum levels}
H01S5/3418 (Using transitions from higher quantum levels) appears on 49 US grants and 18 published applications in this corpus.
Search patents in H01S- Granted patents
- 49
- Published applications
- 18
- Assignees
- 34
- Inventors
- 122
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 3 | 1 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 5 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Laser device and method of achieving optical gain with colloidal quantum fountains16 Jun 2026US 12,658,665 B2Uchicago Argonne, LLC
- Weak index guiding of interband cascade lasers24 Mar 2026US 12,586,987 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Surface-emitting semiconductor light-emitting device23 Jan 2024US 11,881,674 B2Kabushiki Kaisha Toshiba
- Semiconductor laser wafer and semiconductor laser7 Sep 2021US 11,114,821 B2Kabushiki Kaisha Toshiba
- Quantum cascade laser device25 Jun 2019US 10,333,279 B2Hamamatsu Photonics K.K.
- Photoconductive semiconductor laser diodes and leds12 Oct 2023US 2023/0327400 A1
- Colloidal quantum fountains24 Aug 2023US 2023/0268709 A1Uchicago Argonne, LLC
- Weak Index Guiding of Interband Cascade Lasers20 Jul 2023US 2023/0231364 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Surface-emitting semiconductor light-emitting device26 Jan 2023US 2023/0027967 A1Kabushiki Kaisha Toshiba
- Group iii-n light emitter electrically injected by hot carriers from auger recombination5 Jan 2023US 2023/0006426 A1The Regents of the University of California
Most cited
By later US patents
- Unipolar semiconductor laser92US 5,457,709 AAT&T IPM Corp. · 1995
- Unipolar semiconductor laser45US 5,509,025 AAT&T Corp. · 1996
- Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser39US 5,901,166 ACanon Kabushiki Kaisha · 1999
- Interband quantum well cascade laser, with a blocking quantum well for improved quantum efficiency38US 5,799,026 AThe United States of America as represented by the Secretary of the Navy · 1998
- Wavelength tuning of multiple quantum well (MQW) heterostructure lasers37US 4,839,899 AXerox Corporation · 1989