C09K 2019/0425
Characterized by a specific unit that results in a functional effect
Official title: {characterized by a specific unit that results in a functional effect}
C09K2019/0425 (Characterized by a specific unit that results in a functional effect) appears on 140 US grants and 169 published applications in this corpus.
Search patents in C09K- Granted patents
- 140
- Published applications
- 169
- Assignees
- 65
- Inventors
- 402
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 3 | 5 |
| 2005 | 0 | 3 |
| 2006 | 0 | 11 |
| 2007 | 2 | 7 |
| 2008 | 7 | 15 |
| 2009 | 2 | 11 |
| 2010 | 6 | 10 |
| 2011 | 11 | 5 |
| 2012 | 7 | 5 |
| 2013 | 7 | 9 |
| 2014 | 4 | 9 |
| 2015 | 4 | 10 |
| 2016 | 12 | 13 |
| 2017 | 8 | 7 |
| 2018 | 10 | 16 |
| 2019 | 7 | 10 |
| 2020 | 10 | 6 |
| 2021 | 9 | 9 |
| 2022 | 8 | 1 |
| 2023 | 4 | 2 |
| 2024 | 1 | 0 |
| 2025 | 5 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2019/0429The specific unit being a carbocyclic or heterocyclic discotic unitIndexing code60
- C09K 2019/0437The specific unit being an optically active chain used as linking groupIndexing code32
- C09K 2019/044The specific unit being a perfluoro chain used as an end groupIndexing code28
- C09K 2019/0433The specific unit being a luminescent or electroluminescent unitIndexing code5
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
- Liquid crystal composition, optically anisotropic layer, optical film, polarizing plate, and image display device19 Feb 2026US 2026/0049245 A1FUJIFILM Corporation
- 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
Most cited
By later US patents
- Polymer film, phase difference film, polarizing plate, liquid crystal display device, retardation inducing agent, and merocyanine-based compound40US 8,728,591 B2FUJIFILM Corporation · 2014
- Optical compensatory sheet and liquid crystal display34US 6,380,996 B1Fuji Photo Film Co., Ltd. · 2002
- Optical film and liquid crystal display using the same34US 6,503,581 B1Konica Corporation · 2003
- Optical filter in fluorescent liquid crystal display devices24US 4,416,515 ASharp Kabushiki Kaisha · 1983
- Lactic acid derivative, liquid crystal composition containing same and liquid crystal device16US 4,812,259 ACanon Kabushiki Kaisha · 1989