G02F 1/1418
Using smectic liquid crystals
Official title: {using smectic liquid crystals, e.g. based on the electroclinic effect}
G02F1/1418 (Using smectic liquid crystals) appears on 31 US grants and 14 published applications in this corpus.
Search patents in G02F- Granted patents
- 31
- Published applications
- 14
- Assignees
- 24
- Inventors
- 81
- Latest grant
- 5 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Concurrent utilization of monolayer graphene as the planar-alignment layers and the transparent conductive electrodes in electro-optic liquid crystal devices5 Apr 2022US 11,294,253 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Liquid crystal device employing graphene as the planar-alignment agent and electrode28 Sep 2021US 11,131,898 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Thiadiazoles or oxadiazoles possessing one alkyl, alkenyl or alkynyl tail and a 4-fluorophenyl or 4-cyanophenyl group3 Mar 2020US 10,577,338 B2Citizen Finedevice Co., Ltd.
- Graphene as an alignment layer and electrode for liquid crystal devices18 Feb 2020US 10,564,505 B2The Government of the United States of America, as represented by the Secretary of the Navy
- Standing helix ferroelectric liquid crystal display cell22 Oct 2019US 10,451,948 B2The Hong Kong University of Science and Technology
- Graphene As An Alignment Layer And Electrode For Liquid Crystal Devices19 Aug 2021US 2021/0255516 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Graphene As An Alignment Layer And Electrode For Liquid Crystal Devices7 May 2020US 2020/0142271 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Thiadiazoles or oxadiazoles possessing one alkyl, alkenyl or alkynyl tail and a 4-fluorophenyl or 4-cyanophenyl group12 Sep 2019US 2019/0276418 A1Citizen Finedevice Co., Ltd.
- Graphene As An Alignment Layer And Electrode For Liquid Crystal Devices4 Oct 2018US 2018/0284518 A1The Government of the United States of America, as represented by the Secretary of the Navy
- Standing helix ferroelectric liquid crystal display cell18 Jan 2018US 2018/0017833 A1The Hong Kong University of Science and Technology
Most cited
By later US patents
- Chiral smectic liquid crystal optical modulators having variable retardation259US 5,381,253 ABoard of Regents of the University of Colorado · 1995
- Liquid crystal achromatic compound retarder140US 5,658,490 ABoard of Regents of the University of Colorado · 1997
- Key distribution in a multiple access network using quantum cryptography75US 5,768,378 ABritish Telecommunications Public Ltd.Co. · 1998
- System and method for key distribution using quantum cryptography52US 5,850,441 ABritish Telecommunications Public Ltd.Co. · 1998
- Liquid crystal phase modulator using cholesteric circular polarizers50US 5,627,666 ABoard of Regents of the University of Colorado · 1997