C09K 19/3472
Pyrimidine condensed or bridged with another ring system
Official title: {Pyrimidine condensed or bridged with another ring system}
C09K19/3472 (Pyrimidine condensed or bridged with another ring system) appears on 13 US grants and 6 published applications in this corpus.
Search patents in C09K- Granted patents
- 13
- Published applications
- 6
- Assignees
- 12
- Inventors
- 56
- Latest grant
- 16 Feb 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 0 | 3 |
| 2019 | 1 | 0 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Polymerizable compound and optically anisotropic body16 Feb 2021US 10,919,870 B2DIC Corporation
- Ultraviolet light absorbers14 Apr 2020US 10,619,098 B2Transitions Optical, Inc.
- Hein electro-polarizable compound and capacitor thereof18 Feb 2020US 10,566,138 B2Capacitor Sciences Incorporated
- Liquid-crystal medium28 May 2019US 10,301,544 B2Merck Patent GmbH
- Ferroelectric active matrix displays with wide operating temperature range8 Jun 2004US 6,746,731 B1Clariant GmbH
- Liquid crystal display element5 Mar 2020US 2020/0071617 A1DIC Corporation
- Polymerizable compound and optically anisotropic body8 Nov 2018US 2018/0319755 A1DIC Corporation
- Liquid crystal polymerized films using alignment film and polymerizable liquid crystal compostion14 Jun 2018US 2018/0163135 A1Jnc Corporation
- Hein electro-polarizable compound and capacitor thereof17 May 2018US 2018/0137978 A1Capacitor Sciences Incorporated
- Liquid-crystal medium23 Nov 2017US 2017/0335195 A1Merck Patent GmbH
Most cited
By later US patents
- Liquid crystal dielectric27US 4,818,431 AMerck Patent GmbH · 1989
- Photo cross-linkable liquid crystalline 1,4-dioxane-2,3 diyl derivatives16US 5,851,424 ARolic AG · 1998
- Liquid-crystalline tetrahydroquinazolines8US 4,402,849 AMerck Patent GmbH · 1983
- Liquid crystalline ferroelectric derivatives of branched acyclic alpha-chlorocarboxylic acids8US 4,961,876 AVEB Werk fuer Fernsehelektronik im VEB Kombinat Mikroelektronik · 1990
- Optically active-2-alkoxy-propyl ether and liquid crystal composition6US 5,021,191 AChisso Corporation · 1991