G03H 2240/23
Optical length variations
Official title: Optical length variations, e.g. bleached silver halide (G03H1/0244 takes precedence)
G03H2240/23 (Optical length variations) appears on 54 US grants and 66 published applications in this corpus.
Search patents in G03H- Granted patents
- 54
- Published applications
- 66
- Assignees
- 35
- Inventors
- 143
- Latest grant
- 3 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 1 |
| 2004 | 2 | 5 |
| 2005 | 3 | 3 |
| 2006 | 2 | 3 |
| 2007 | 3 | 9 |
| 2008 | 1 | 3 |
| 2009 | 6 | 4 |
| 2010 | 4 | 5 |
| 2011 | 1 | 3 |
| 2012 | 3 | 4 |
| 2013 | 1 | 2 |
| 2014 | 5 | 0 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 2 |
| 2022 | 2 | 5 |
| 2023 | 4 | 4 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Evacuated periodic structures and methods of manufacturing3 Dec 2024US 12,158,612 B2DigiLens Inc.
- Devices and methods employing optical-based machine learning using diffractive deep neural networks10 Sep 2024US 12,086,717 B2The Regents of the University of California
- System, apparatus and method for extracting three-dimensional information of an object from received electromagnetic radiation11 Jul 2023US 11,698,606 B2Celloptic, Inc.
- Devices and methods employing optical-based machine learning using diffractive deep neural networks4 Jul 2023US 11,694,082 B2The Regents of the University of California
- Method for obtaining full-color hologram optical element using photopolymer, and head-up display apparatus with the same16 May 2023US 11,650,541 B2Chungbuk National University Industry-Academic Cooperation Foundation
- Harmonic Gratings Utilizing Evacuated Periodic Structures27 Aug 2026US 2026/0251829 A1DigiLens Inc.
- Evacuated Periotic Structures and Methods of Manufacturing29 May 2025US 2025/0172728 A1DigiLens Inc.
- Devices and methods employing optical-based machine learning using diffractive deep neural networks14 Dec 2023US 2023/0401447 A1The Regents of the University of California
- System, apparatus and method for extracting three-dimensional information of an object from received electromagnetic radiation12 Oct 2023US 2023/0324849 A1Celloptic, Inc.
- Reflective holographic phase masks27 Jul 2023US 2023/0236494 A1University of Central Florida Research Foundation, Inc.
Most cited
By later US patents
- High efficiency volume diffractive elements in photo-thermo-refractive glass70US 6,673,497 B2University of Central Florida · 2004
- Laser transfer machining apparatus69US 6,008,914 AMitsubishi Denki Kabushiki Kaisha · 1999
- Process for production of high efficiency volume diffractive elements in photo-thermo-refractive glass56US 6,586,141 B1University of Central Florida · 2003
- Non-etched flat polarization-selective diffractive optical elements39US 8,643,822 B2JDS Uniphase Corporation · 2014
- Diffractive optical element and optical system having the same22US 6,122,104 ACanon Kabushiki Kaisha · 2000