H01S 3/175
Phosphate glass
Official title: {phosphate glass}
H01S3/175 (Phosphate glass) appears on 73 US grants and 62 published applications in this corpus.
Search patents in H01S- Granted patents
- 73
- Published applications
- 62
- Assignees
- 55
- Inventors
- 179
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 4 | 5 |
| 2003 | 5 | 4 |
| 2004 | 5 | 4 |
| 2005 | 4 | 0 |
| 2006 | 2 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 6 |
| 2012 | 1 | 6 |
| 2013 | 6 | 3 |
| 2014 | 4 | 7 |
| 2015 | 6 | 1 |
| 2016 | 3 | 2 |
| 2017 | 3 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 3 |
| 2021 | 1 | 2 |
| 2022 | 1 | 5 |
| 2023 | 0 | 3 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Active element added-optical fiber, preform for active element added-optical fiber, resonator, and fiber laser device12 May 2026US 12,627,114 B2Fujikura Ltd.
- Optical amplification apparatus and signal amplification method of optical amplification apparatus21 Apr 2026US 12,609,505 B2Huawei Technologies Co., Ltd.
- Phosphorous doped fiber-based Raman amplifier6 Jan 2026US 12,519,280 B21FINITY Inc.
- Laser oscillation amplifier comprising semiconductor laser shaping device2 Dec 2025US 12,489,267 B2Fujian Hitronics Technologies, Inc.
- Phosphor element, phosphor device, and illumination apparatus7 Oct 2025US 12,438,336 B2NGK Insulators, Ltd.
- Broadband Low-Noise Figure Bismuth-Doped Silica Fiber for O+E Band and Its Fabrication Method13 Nov 2025US 2025/0346994 A1Shanghai University
- High-energy high-power diode pumped broadband laser15 Feb 2024US 2024/0055824 A1
- Laser oscillation amplifier comprising semiconductor laser shaping device10 Aug 2023US 2023/0253752 A1Fujian Hitronics Technologies, Inc.
- Scalable Visible Brillouin Fiber Laser20 Jul 2023US 2023/0231357 A1Nuburu, Inc.
- Phosphorous doped fiber-based raman amplifier4 May 2023US 2023/0139856 A1Fujitsu Limited
Most cited
By later US patents
- Method and apparatus for waveguide optics and devices111US 6,330,388 B1Northstar Photonics, Inc. · 2001
- Method and apparatus for waveguide optics and devices64US 6,690,873 B2Teem Photonics · 2004
- Method and apparatus for waveguide optics and devices52US 6,636,678 B1Teem Photonics · 2003
- Method to optimize rare earth content for waveguide lasers and amplifiers39US 6,529,675 B1The United States of America as represented by the Secretary of Commerce · 2003
- Dual media laser with mode locking35US 5,956,354 AUniversity of Maryland, Baltimore County · 1999