C09K 2019/0437
The specific unit being an optically active chain used as linking group
Official title: {the specific unit being an optically active chain used as linking group between rings or as end group}
C09K2019/0437 (The specific unit being an optically active chain used as linking group) appears on 32 US grants and 35 published applications in this corpus.
Search patents in C09K- Granted patents
- 32
- Published applications
- 35
- Assignees
- 30
- Inventors
- 104
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 4 |
| 2014 | 0 | 1 |
| 2015 | 1 | 3 |
| 2016 | 3 | 7 |
| 2017 | 2 | 2 |
| 2018 | 3 | 4 |
| 2019 | 1 | 3 |
| 2020 | 3 | 0 |
| 2021 | 1 | 2 |
| 2022 | 3 | 1 |
| 2023 | 2 | 2 |
| 2024 | 0 | 0 |
| 2025 | 5 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Compound and liquid crystal composition25 Nov 2025US 12,480,049 B2The Hong Kong University of Science and Technology
- Monitoring catalytic chemical reactions using liquid crystals19 Aug 2025US 12,392,758 B2Cornell University
- Organic solid crystals having helical structures formed using cholesteric liquid crystals22 Apr 2025US 12,282,222 B1Meta Platforms Technologies, LLC
- Band edge emission enhanced organic light emitting diode utilizing chiral liquid crystalline emitter21 Jan 2025US 12,207,551 B2Red Bank Technologies LLC
- Light emitting electrochemical cells with band-edge enhanced light emission due to chiral liquid crystalline structure7 Jan 2025US 12,193,329 B2Red Bank Technologies LLC
- Light emitting electrochemical cells with band-edge enhanced light emission due to chiral liquid crystalline structure4 Dec 2025US 2025/0374829 A1Red Bank Technologies LLC
- Liquid crystal composition and element4 Sep 2025US 2025/0277150 A1Jnc Corporation
- Compound and liquid crystal composition10 Aug 2023US 2023/0250338 A1The Hong Kong University of Science and Technology
- Monitoring catalytic chemical reactions using liquid crystals25 May 2023US 2023/0160866 A1Cornell University
- Band edge emission enhanced organic light emitting diode utilizing chiral liquid crystalline emitter25 Aug 2022US 2022/0271239 A1Red Bank Technologies LLC
Most cited
By later US patents
- Lactic acid derivative, liquid crystal composition containing same and liquid crystal device16US 4,812,259 ACanon Kabushiki Kaisha · 1989
- Lactic acid derivative, liquid crystal composition containing same and liquid crystal device13US 4,880,560 ACanon Kabushiki Kaisha · 1989
- Liquid-crystalline medium9US 10,131,841 B2Merck Patent GmbH · 2018
- Compound having alkyl on benzene ring, liquid crystal composition having the compound, and liquid crystal display device having the liquid crystal composition9US 7,981,486 B2Chisso Petrochemical Corporation · 2011
- Compound having alkyl on benzene ring, liquid crystal composition having the compound, and liquid crystal display device having the liquid crystal composition7US 7,846,513 B2Chisso Corporation · 2010