G02F 1/133634
The refractive index nz perpendicular to the element surface being different from
Official title: {the refractive index Nz perpendicular to the element surface being different from in-plane refractive indices Nx and Ny, e.g. biaxial or with normal optical axis}
G02F1/133634 (The refractive index nz perpendicular to the element surface being different from) appears on 941 US grants and 1,090 published applications in this corpus.
Search patents in G02F- Granted patents
- 941
- Published applications
- 1,090
- Assignees
- 207
- Inventors
- 1,528
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 13 | 0 |
| 1997 | 11 | 0 |
| 1998 | 10 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 15 | 4 |
| 2002 | 11 | 21 |
| 2003 | 23 | 26 |
| 2004 | 19 | 48 |
| 2005 | 34 | 73 |
| 2006 | 40 | 92 |
| 2007 | 31 | 78 |
| 2008 | 48 | 67 |
| 2009 | 54 | 98 |
| 2010 | 64 | 84 |
| 2011 | 60 | 42 |
| 2012 | 75 | 47 |
| 2013 | 38 | 26 |
| 2014 | 33 | 47 |
| 2015 | 33 | 38 |
| 2016 | 29 | 40 |
| 2017 | 31 | 22 |
| 2018 | 25 | 26 |
| 2019 | 26 | 41 |
| 2020 | 32 | 43 |
| 2021 | 30 | 51 |
| 2022 | 39 | 24 |
| 2023 | 20 | 22 |
| 2024 | 23 | 17 |
| 2025 | 18 | 6 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Liquid crystal cell using the electrically controlled birefringence effect and a uniaxial medium of negative optical anisotropy usable therein248US 4,889,412 ACommissariat A L' Energie Atomique · 1989
- Liquid crystal display with improved angle of view and response times207US 4,385,806 A1983
- Phase difference film, phase difference film composite and liquid crystal display device using the same163US 6,638,582 B1Teijin Limited · 2003
- Active matrix screen for the color display of television pictures, control system and process for producing said screen159US 4,957,349 ACommissariat A L' Energie Atomique · 1990
- Enhanced off-axis viewing performance of liquid crystal display employing a fiberoptic faceplate in conjunction with dual negative retarders and a brightness enhancing film on the illumination source144US 5,751,390 AXerox Corporation · 1998