G01J 9/0246
Measuring optical wavelength
Official title: {Measuring optical wavelength}
G01J9/0246 (Measuring optical wavelength) appears on 236 US grants and 189 published applications in this corpus.
Search patents in G01J- Granted patents
- 236
- Published applications
- 189
- Assignees
- 175
- Inventors
- 509
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 1 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 7 | 16 |
| 2003 | 16 | 20 |
| 2004 | 10 | 13 |
| 2005 | 14 | 6 |
| 2006 | 9 | 12 |
| 2007 | 5 | 6 |
| 2008 | 10 | 5 |
| 2009 | 7 | 1 |
| 2010 | 3 | 1 |
| 2011 | 1 | 5 |
| 2012 | 0 | 1 |
| 2013 | 2 | 3 |
| 2014 | 2 | 4 |
| 2015 | 6 | 4 |
| 2016 | 8 | 4 |
| 2017 | 3 | 6 |
| 2018 | 6 | 10 |
| 2019 | 10 | 12 |
| 2020 | 10 | 12 |
| 2021 | 7 | 7 |
| 2022 | 10 | 7 |
| 2023 | 6 | 12 |
| 2024 | 9 | 11 |
| 2025 | 7 | 8 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical wavelength measuring device using absorption-type optical fiber-based multiple optical fiber filter module, optical sensor system having the same, and optical measurement method29 Sep 2026US 12,747,989 B2Six Fiber Systems Inc.
- Optical self-heterodyne detection system including optical frequency comb light source1 Sep 2026US 12,723,865 B2Electronics and Telecommunications Research Institute
- Interferometric wavemeter for broadband sensors in photonic systems21 Jul 2026US 12,687,383 B2Intel Corporation
- Optical transmitter17 Mar 2026US 12,578,529 B2Rockley Photonics Limited
- Wavelength measurement apparatus, narrowed-line laser apparatus, and method for manufacturing electronic devices10 Mar 2026US 12,571,680 B2Gigaphoton Inc.
- Optical element, wavelength detection unit, and light generation unit17 Sep 2026US 2026/0276453 A1Hamamatsu Photonics K.K.
- Method and system to stabilize a frequency sum generated laser13 Aug 2026US 2026/0237955 A1ASML Netherlands B. V.
- Optical path length sensor7 May 2026US 2026/0126283 A1Lumiary AB
- System and method for measuring instantaneous frequency of a light signal13 Nov 2025US 2025/0347565 A1Stichting IMEC Nederland
- Wavelength controller and system for a tunable laser13 Nov 2025US 2025/0350086 A1Stichting IMEC Nederland
Most cited
By later US patents
- Method and apparatus for simultaneously measuring a plurality of spectral wavelengths present in electromagnetic radiation189US 4,905,169 AThe United States of America as represented by the United States Department of Energy · 1990
- Wavelength system for an excimer laser146US 5,978,394 ACymer, Inc. · 1999
- Reliable. modular, production quality narrow-band KRF excimer laser139US 5,991,324 ACymer, Inc. · 1999
- Method and device for wavelength locking130US 5,798,859 AJDS Fitel Inc. · 1998
- Controlled multi-wavelength etalon118US 6,323,987 B1Agere Systems Optoelectronics Guardian Corp. · 2001