C09K 19/3455
Pyridazine
Official title: {Pyridazine}
C09K19/3455 (Pyridazine) appears on 72 US grants and 24 published applications in this corpus.
Search patents in C09K- Granted patents
- 72
- Published applications
- 24
- Assignees
- 33
- Inventors
- 159
- Latest grant
- 9 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 1 | 3 |
| 2015 | 1 | 3 |
| 2016 | 6 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 3 |
| 2019 | 2 | 2 |
| 2020 | 0 | 2 |
| 2021 | 3 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Electrically controllable optical element, in particular thin-film cell having an optically active surface profile, and method for the production thereof9 May 2023US 11,644,698 B2FokusTec GmbH
- Laminate, manufacturing method of laminate, and image display device29 Mar 2022US 11,286,423 B2FUJIFILM Corporation
- Phase difference plate for organic EL display device, organic EL display device, and method for producing phase difference plate7 Dec 2021US 11,193,064 B2FUJIFILM Corporation
- Reactive mesogen and liquid crystal composition including the same20 Jul 2021US 11,066,602 B2Samsung Display Co., Ltd.
- Electrically controllable optical element made of an optically isotropic liquid, in particular lens, and method for the production thereof on the basis of liquid composites15 Jun 2021US 11,036,112 B2FOKUS TEC GmbH
- Liquid crystal composition, liquid crystal element, sensor, liquid crystal lens, optical communication device, and antenna13 Apr 2023US 2023/0112953 A1DIC Corporation
- Electrically controllable optical element, in particular thin-film cell having an optically active surface profile, and method for the production thereof16 Sep 2021US 2021/0286204 A1FOCUSTEC GmbH
- Liquid-crystal medium13 May 2021US 2021/0139777 A1Merck Patent GmbH
- Laminate, manufacturing method of laminate, and image display device19 Nov 2020US 2020/0362247 A1FUJIFILM Corporation
- Phase difference plate for organic el display device, organic el display device, and method for producing phase difference plate19 Mar 2020US 2020/0087573 A1FUJIFILM Corporation
Most cited
By later US patents
- Liquid crystal compounds and compositions49US 4,921,632 ANEC Corporation · 1990
- Mesomorphic compound, ferroelectric liquid crystal composition containing same and ferroelectric liquid crystal device28US 5,034,151 ACanon Kabushiki Kaisha · 1991
- Anisotropic compounds and liquid crystal mixtures24US 4,723,005 AMerck Patent GmbH · 1988
- Substituted pyridazines23US 4,657,695 AChisso Corporation · 1987
- Ethyne derivatives as a component of liquid crystal phases19US 5,068,053 AMerck Patent GmbH · 1991