G01J 3/0227
Using notch filters
Official title: {using notch filters}
G01J3/0227 (Using notch filters) appears on 143 US grants and 168 published applications in this corpus.
Search patents in G01J- Granted patents
- 143
- Published applications
- 168
- Assignees
- 127
- Inventors
- 353
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 3 |
| 2002 | 2 | 2 |
| 2003 | 2 | 2 |
| 2004 | 4 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 9 |
| 2007 | 5 | 10 |
| 2008 | 10 | 3 |
| 2009 | 9 | 7 |
| 2010 | 3 | 6 |
| 2011 | 4 | 4 |
| 2012 | 4 | 4 |
| 2013 | 5 | 3 |
| 2014 | 2 | 4 |
| 2015 | 1 | 5 |
| 2016 | 4 | 8 |
| 2017 | 4 | 7 |
| 2018 | 6 | 5 |
| 2019 | 9 | 9 |
| 2020 | 10 | 11 |
| 2021 | 12 | 16 |
| 2022 | 9 | 10 |
| 2023 | 9 | 16 |
| 2024 | 12 | 9 |
| 2025 | 6 | 8 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Optical devices having a wavelength-tunable dispersion assembly that has a volume dispersive diffraction grating154US 6,583,873 B1Carnegie Institution of Washington · 2003
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