C09K 19/3491
Having sulfur as hetero atom
Official title: {having sulfur as hetero atom}
C09K19/3491 (Having sulfur as hetero atom) appears on 539 US grants and 591 published applications in this corpus.
Search patents in C09K- Granted patents
- 539
- Published applications
- 591
- Assignees
- 103
- Inventors
- 994
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 20 | 0 |
| 1994 | 12 | 0 |
| 1995 | 12 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 5 | 7 |
| 2003 | 1 | 13 |
| 2004 | 10 | 12 |
| 2005 | 10 | 19 |
| 2006 | 8 | 15 |
| 2007 | 12 | 14 |
| 2008 | 13 | 14 |
| 2009 | 9 | 16 |
| 2010 | 15 | 15 |
| 2011 | 10 | 7 |
| 2012 | 10 | 11 |
| 2013 | 11 | 12 |
| 2014 | 7 | 9 |
| 2015 | 10 | 18 |
| 2016 | 12 | 11 |
| 2017 | 7 | 28 |
| 2018 | 11 | 43 |
| 2019 | 17 | 52 |
| 2020 | 37 | 49 |
| 2021 | 28 | 38 |
| 2022 | 42 | 46 |
| 2023 | 31 | 49 |
| 2024 | 47 | 22 |
| 2025 | 25 | 34 |
| 2026 | 36 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Liquid crystal medium and electronic component6 Oct 2026US 12,753,345 B2Merck Patent GmbH
- Liquid crystal composition and display panel29 Sep 2026US 12,747,393 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- Liquid-crystal medium15 Sep 2026US 12,735,641 B2Merck Patent GmbH
- Liquid crystalline compounds18 Aug 2026US 12,709,710 B2Merck Patent GmbH
- Liquid-crystalline medium4 Aug 2026US 12,698,444 B2Merck Patent GmbH
- Polymerizable liquid crystal composition8 Oct 2026US 2026/0308453 A1Rolic Technologies AG
- 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 liquid crystal display device thereof17 Sep 2026US 2026/0275194 A1Jiangsu Hecheng Display Technology Co., Ltd.
- Liquid-crystal medium17 Sep 2026US 2026/0275195 A1Merck Patent GmbH
- Compound, and Preparation Method and Use Thereof10 Sep 2026US 2026/0265606 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Polymerizable, chiral compounds and their use70US 5,780,629 ABASF SE · 1998
- Ferroelectric liquid crystal compounds having perfluoroether terminal portions56US 5,262,082 AMinnesota Mining and Manufacturing Company · 1993
- Alkylenedioxythiophenes and poly(alkylenedioxythiophenes) containing mesogenic groups56US 7,585,983 B2H. C. Starck GmbH · 2009
- Ethane derivatives53US 4,659,502 AMerck Patent GmbH · 1987
- Liquid crystal phase50US 4,744,918 AMerck Patent GmbH · 1988