C09K 2019/3425
Six-membered ring with oxygen in fused, bridged or spiro ring systems
Official title: {Six-membered ring with oxygen(s) in fused, bridged or spiro ring systems}
C09K2019/3425 (Six-membered ring with oxygen in fused, bridged or spiro ring systems) appears on 264 US grants and 314 published applications in this corpus.
Search patents in C09K- Granted patents
- 264
- Published applications
- 314
- Assignees
- 57
- Inventors
- 454
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 4 |
| 2004 | 2 | 2 |
| 2005 | 2 | 5 |
| 2006 | 2 | 7 |
| 2007 | 4 | 6 |
| 2008 | 4 | 8 |
| 2009 | 7 | 7 |
| 2010 | 8 | 7 |
| 2011 | 8 | 21 |
| 2012 | 12 | 9 |
| 2013 | 14 | 17 |
| 2014 | 13 | 17 |
| 2015 | 17 | 29 |
| 2016 | 22 | 43 |
| 2017 | 30 | 21 |
| 2018 | 13 | 36 |
| 2019 | 30 | 27 |
| 2020 | 19 | 9 |
| 2021 | 9 | 9 |
| 2022 | 10 | 8 |
| 2023 | 5 | 4 |
| 2024 | 8 | 1 |
| 2025 | 3 | 15 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid crystal composition and display panel29 Sep 2026US 12,747,393 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- Liquid crystal aligning agent, liquid crystal alignment film and liquid crystal display element28 Jul 2026US 12,692,440 B2Nissan Chemical Corporation
- Liquid-crystal medium28 Jul 2026US 12,692,441 B2Merck Patent GmbH
- Liquid crystal medium28 Apr 2026US 12,612,551 B2Merck Patent GmbH
- Liquid crystal composition and display panel28 Apr 2026US 12,612,552 B2Guangzhou China Star Optoelectronics Semiconductor Display Technology Co., LTd.
- Liquid-crystalline medium30 Jul 2026US 2026/0218049 A1Merck Patent GmbH
- Liquid crystal composition and display panel7 May 2026US 2026/0125600 A1Tcl China Star Optoelectronics Technology Co., Ltd.
- Liquid-Crystal Medium Comprising Polymerizable Compounds4 Dec 2025US 2025/0368897 A1Merck Patent GmbH
- Liquid-crystal medium25 Sep 2025US 2025/0297161 A1Merck Patent GmbH
- Ferroelectric nematic liquid crystalline medium11 Sep 2025US 2025/0282995 A1Merck Patent GmbH
Most cited
By later US patents
- Polymerizable, chiral compounds and their use70US 5,780,629 ABASF SE · 1998
- Colorless liquid crystalline compounds61US 4,564,694 AHitachi, Ltd. · 1986
- Coumarin and quinolinone derivatives for the production of orienting layers for liquid crystals53US 6,201,087 B1Rolic AG · 2001
- Liquid crystal phase50US 4,744,918 AMerck Patent GmbH · 1988
- Polymerizable liquid-crystalline compounds47US 6,136,225 ABASF SE · 2000