C09K 2019/0444
Characterized by a linking chain between rings or ring systems, a bridging
Official title: {characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group}
C09K2019/0444 (Characterized by a linking chain between rings or ring systems, a bridging) appears on 1,995 US grants and 2,403 published applications in this corpus.
Search patents in C09K- Granted patents
- 1,995
- Published applications
- 2,403
- Assignees
- 312
- Inventors
- 2,563
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 13 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 31 | 0 |
| 1999 | 19 | 0 |
| 2000 | 23 | 0 |
| 2001 | 28 | 5 |
| 2002 | 21 | 22 |
| 2003 | 21 | 29 |
| 2004 | 32 | 42 |
| 2005 | 22 | 39 |
| 2006 | 33 | 51 |
| 2007 | 24 | 51 |
| 2008 | 38 | 59 |
| 2009 | 50 | 68 |
| 2010 | 67 | 109 |
| 2011 | 65 | 105 |
| 2012 | 70 | 91 |
| 2013 | 107 | 95 |
| 2014 | 65 | 123 |
| 2015 | 116 | 187 |
| 2016 | 128 | 198 |
| 2017 | 135 | 166 |
| 2018 | 112 | 174 |
| 2019 | 122 | 168 |
| 2020 | 121 | 142 |
| 2021 | 95 | 112 |
| 2022 | 106 | 103 |
| 2023 | 90 | 105 |
| 2024 | 80 | 45 |
| 2025 | 65 | 58 |
| 2026 | 49 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 2019/0448The end chain group being a polymerizable end groupIndexing code1,340
- C09K 2019/0466The linking chain being a -cf2o- chainIndexing code589
- C09K 2019/0459The linking chain being a -cf=cf- chainIndexing code56
- C09K 2019/0451The end chain group being a ch3ch=chch2ch2- chainIndexing code53
- C09K 2019/0455The linking chain being a -cf2cf2- , -cf2cf2cf2cf2- or -ch2cf2cf2ch2- chainIndexing code11
- C09K 2019/047The linking chain being a -ch2cf2o- chainIndexing code1
- C09K 2019/0474The linking chain being a -chfo- chainIndexing code1
- C09K 2019/0462The linking chain being a -cf2cf2o- chainIndexing code0
Recent patents
- Liquid crystal compounds29 Sep 2026US 12,747,392 B2Rolic Technologies AG
- Liquid-crystal medium15 Sep 2026US 12,735,641 B2Merck Patent GmbH
- Polymerizable liquid crystal material and polymerized liquid crystal film8 Sep 2026US 12,729,341 B2Merck Patent GmbH
- Liquid crystal elastomer compositions and methods of making the same18 Aug 2026US 12,709,711 B2The Regents of the University of Colorado, a body corporate
- Polymerisable liquid crystal material and polymerised liquid crystal film21 Jul 2026US 12,686,820 B2Merck Patent GmbH
- Polymerizable liquid crystal composition8 Oct 2026US 2026/0308453 A1Rolic Technologies AG
- Chiral reactive mesogen mixture24 Sep 2026US 2026/0286221 A1Merck Patent GmbH
- Innovative photomobile polymer, method for preparing said photomobile polymer without rubbing, and handling device for a photovoltaic panel24 Sep 2026US 2026/0293363 A1Consiglio Nazionale Delle Ricerche
- Liquid crystal composition and use thereof17 Sep 2026US 2026/0275193 A1Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
- Liquid crystal composition and liquid crystal display device thereof17 Sep 2026US 2026/0275194 A1Jiangsu Hecheng Display Technology Co., Ltd.
Most cited
By later US patents
- Liquid crystal composition and liquid crystal display device182US 8,361,569 B2Jnc Corporation · 2013
- Process of preparing compositions having multiple oriented mesogens149US 5,073,294 AHercules Incorporated · 1991
- Polymeric liquid crystals121US 4,637,896 AArmstrong World Industries, Inc. · 1987
- Chiral dopants104US 6,217,792 B1Merck Patent GmbH · 2001
- Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use102US 4,293,435 ABASF SE · 1981