C09K 19/18
The chain containing carbon-to-carbon triple bonds
Official title: the chain containing carbon-to-carbon triple bonds, e.g. tolans
C09K19/18 (The chain containing carbon-to-carbon triple bonds) appears on 323 US grants and 346 published applications in this corpus.
Search patents in C09K- Granted patents
- 323
- Published applications
- 346
- Assignees
- 97
- Inventors
- 640
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 1 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 5 |
| 2003 | 5 | 4 |
| 2004 | 5 | 9 |
| 2005 | 2 | 10 |
| 2006 | 5 | 11 |
| 2007 | 8 | 7 |
| 2008 | 9 | 5 |
| 2009 | 3 | 8 |
| 2010 | 6 | 4 |
| 2011 | 9 | 12 |
| 2012 | 9 | 11 |
| 2013 | 10 | 10 |
| 2014 | 6 | 17 |
| 2015 | 12 | 17 |
| 2016 | 13 | 13 |
| 2017 | 21 | 29 |
| 2018 | 14 | 29 |
| 2019 | 16 | 30 |
| 2020 | 17 | 20 |
| 2021 | 16 | 18 |
| 2022 | 17 | 13 |
| 2023 | 15 | 20 |
| 2024 | 16 | 17 |
| 2025 | 15 | 12 |
| 2026 | 10 | 14 |
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 compounds29 Sep 2026US 12,747,392 B2Rolic Technologies AG
- Polymerisable liquid crystal material and polymerised liquid crystal film21 Jul 2026US 12,686,820 B2Merck Patent GmbH
- Liquid crystal compounds16 Jun 2026US 12,655,349 B2Rolic Technologies AG
- Liquid crystalline compound, liquid crystal composition, and element16 Jun 2026US 12,655,351 B2Jnc Corporation
- Chiral reactive mesogen mixture24 Sep 2026US 2026/0286221 A1Merck Patent GmbH
- Polymerizable liquid crystal formulations20 Aug 2026US 2026/0242666 A1Merck Patent GmbH
- Reactive mesogens with high birefringence13 Aug 2026US 2026/0234472 A1Merck Patent GmbH
- Liquid-crystalline medium6 Aug 2026US 2026/0226350 A1Merck Patent GmbH
- Reactive mesogens16 Jul 2026US 2026/0201251 A1Merck Patent GmbH
Most cited
By later US patents
- Polymerizable liquid crystal composition and optically anisotropic film comprising the same56US 5,863,457 ADainippon Ink and Chemicals, Inc. · 1999
- Electrooptical system53US 5,356,557 AMerck Patent GmbH · 1994
- Liquid crystal compounds and compositions49US 4,921,632 ANEC Corporation · 1990
- Components for high-frequency technology41US 7,361,288 B2Merck Patent Gesellschaft Mit Besschrankter haftung · 2008
- Diacetylenes having liquid crystal phases35US 4,615,962 AUniversity Patents, Inc. · 1986