G02F 2202/13
Photorefractive
Official title: photorefractive
G02F2202/13 (Photorefractive) appears on 43 US grants and 35 published applications in this corpus.
Search patents in G02F- Granted patents
- 43
- Published applications
- 35
- Assignees
- 36
- Inventors
- 107
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 5 | 8 |
| 2007 | 2 | 2 |
| 2008 | 4 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 4 |
| 2013 | 2 | 3 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Back light unit for backlit displays16 Jun 2026US 12,656,641 B2BrightView Technologies, Inc.
- Back light unit for backlit displays18 Feb 2025US 12,228,818 B2BrightView Technologies, Inc.
- Back light unit for backlit displays9 Jul 2024US 12,032,242 B1BrightView Technologies, Inc.
- Integrated optical transmission element5 Jan 2021US 10,884,315 B2International Business Machines Corporation
- Structured photorefractive layer stack14 Jan 2020US 10,534,204 B2International Business Machines Corporation
- Detecting Electromagnetic Radiation with Improved Signal-to-Noise16 Jul 2026US 2026/0202713 A1
- Back Light Unit for Backlit Displays5 Jun 2025US 2025/0180947 A1BrightView Technologies, Inc.
- Back Light Unit for Backlit Displays28 Nov 2024US 2024/0393639 A1BrightView Technologies, Inc.
- Integrated Optical Transmission Element26 Sep 2019US 2019/0294021 A1International Business Machines.Corp
- Structured photorefractive layer stack9 May 2019US 2019/0137792 A1International Business Machines Corporation
Most cited
By later US patents
- Variable ratio fiber optic coupler optical signal processing element145US 5,136,669 ASperry Marine Inc. · 1992
- Spatial light modulator device and a conoscopic holography system of large dynamic range including such a modulator device57US 5,291,314 AFrance Telecom · 1994
- Method and apparatus for detecting multiple optical wave lengths52US 7,356,224 B2Brown University Research Foundation · 2008
- Photorefractive device with quantum wells35US 5,559,613 AFrance Telecom Etablissement Autonome de Droit Public · 1996
- Transistor utilizing photonic band-gap material and integrated circuit devices comprising same23US 6,278,105 B1Lucent Technologies Inc. · 2001