C09K 19/586
Optically active dopants
Official title: {Optically active dopants; chiral dopants}
C09K19/586 (Optically active dopants) appears on 573 US grants and 509 published applications in this corpus.
Search patents in C09K- Granted patents
- 573
- Published applications
- 509
- Assignees
- 200
- Inventors
- 1,228
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 13 | 0 |
| 1992 | 14 | 0 |
| 1993 | 12 | 0 |
| 1994 | 22 | 0 |
| 1995 | 20 | 0 |
| 1996 | 10 | 0 |
| 1997 | 13 | 0 |
| 1998 | 17 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 3 |
| 2002 | 11 | 9 |
| 2003 | 12 | 21 |
| 2004 | 21 | 15 |
| 2005 | 10 | 14 |
| 2006 | 13 | 15 |
| 2007 | 9 | 13 |
| 2008 | 13 | 12 |
| 2009 | 10 | 15 |
| 2010 | 16 | 19 |
| 2011 | 12 | 24 |
| 2012 | 16 | 20 |
| 2013 | 31 | 25 |
| 2014 | 19 | 16 |
| 2015 | 11 | 35 |
| 2016 | 16 | 28 |
| 2017 | 29 | 24 |
| 2018 | 16 | 30 |
| 2019 | 16 | 21 |
| 2020 | 19 | 23 |
| 2021 | 14 | 24 |
| 2022 | 15 | 33 |
| 2023 | 21 | 26 |
| 2024 | 23 | 12 |
| 2025 | 22 | 17 |
| 2026 | 11 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Polymerizable liquid crystal material and polymerized liquid crystal film8 Sep 2026US 12,729,341 B2Merck Patent GmbH
- Flexoelectric liquid crystal composition, liquid crystal element, laser inspection system, and method for analyzing test subject30 Jun 2026US 12,669,482 B2Tokyo University of Science Foundation
- Liquid-crystal media and PNLC light modulation element23 Jun 2026US 12,662,632 B2Merck Patent GmbH
- Polymerizable liquid crystal material and polymerized liquid crystal film2 Jun 2026US 12,644,050 B2Merck Patent GmbH
- Cholesteric liquid crystal film and manufacturing method thereof12 May 2026US 12,624,292 B2FUJIFILM Corporation
- Chiral reactive mesogen mixture24 Sep 2026US 2026/0286221 A1Merck Patent GmbH
- Chiral photosensitive molecular switch, cholesteric liquid crystal composition, display panel and preparation method thereof24 Sep 2026US 2026/0286222 A1Beijing Boe Optoelectronics Technology Co., Ltd.
- Liquid crystal composition and light modulating device thereof13 Aug 2026US 2026/0234471 A1TD Electrooptic Films (TDEF) Inc.
- Reactive mesogens with high birefringence13 Aug 2026US 2026/0234472 A1Merck Patent GmbH
- Tunable and long-lived light reflection from liquid crystals using hydrazone dopants23 Jul 2026US 2026/0209172 A1Trustees of Dartmouth College
Most cited
By later US patents
- Liquid crystalline light modulating device and material273US 5,437,811 AKent State University · 1995
- Liquid crystalline light modulating device and material203US 5,695,682 AKent State University · 1997
- Polymer stabilized liquid crystalline light modulating device and material191US 5,691,795 AKent State University · 1997
- Multistable chiral nematic displays183US 5,453,863 AKent State University · 1995
- Pressure sensitive liquid crystalline light modulating device and material148US 6,104,448 AKent State University · 2000