C09K 19/3488
The heterocyclic ring having more than 6 members
Official title: {the heterocyclic ring having more than 6 members, e.g. macrocycles, phthalocyanines}
C09K19/3488 (The heterocyclic ring having more than 6 members) appears on 42 US grants and 45 published applications in this corpus.
Search patents in C09K- Granted patents
- 42
- Published applications
- 45
- Assignees
- 32
- Inventors
- 118
- Latest grant
- 13 Jun 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 5 |
| 2006 | 2 | 5 |
| 2007 | 3 | 4 |
| 2008 | 4 | 2 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 2 | 3 |
| 2012 | 2 | 3 |
| 2013 | 2 | 3 |
| 2014 | 3 | 1 |
| 2015 | 3 | 4 |
| 2016 | 3 | 1 |
| 2017 | 0 | 3 |
| 2018 | 1 | 2 |
| 2019 | 3 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Polymerizable liquid crystal compound, liquid crystal composition for optical element, polymer, optically anisotropic body, and optical element for display device13 Jun 2023US 11,674,082 B2LG Chem, Ltd.
- Reactive mesogen and liquid crystal composition including the same20 Jul 2021US 11,066,602 B2Samsung Display Co., Ltd.
- Dithioalkylpyrrolopyrroles and the use thereof as dyes15 Dec 2020US 10,868,257 B2Merck Patent GmbH
- Polymer, composition, optical film, and liquid crystal display device26 Nov 2019US 10,487,165 B2FUJIFILM Corporation
- Compounds for electronic devices8 Oct 2019US 10,439,145 B2Merck Patent GmbH
- Polymerizable Liquid Crystal Compound, Liquid Crystal Composition for Optical Element, Polymer, Optically Anisotropic Body, and Optical Element for Display Device4 Mar 2021US 2021/0062092 A1LG Chem.Ltd.
- Macrocyclisation Tags17 Sep 2020US 2020/0291444 A1
- Reactive mesogen and liquid crystal composition including the same12 Sep 2019US 2019/0276741 A1Samsung Display Co., Ltd.
- Dithioalkylpyrrolopyrroles and the use thereof as dyes27 Dec 2018US 2018/0375030 A1Merck Patent GmbH
- Reactive mesogen and liquid crystal composition including the same25 Jan 2018US 2018/0023000 A1Samsung Display Co., Ltd.
Most cited
By later US patents
- Optical compensatory sheet and liquid crystal display34US 6,380,996 B1Fuji Photo Film Co., Ltd. · 2002
- Materials and methods for the preparation of anisotropically-ordered solids27US 7,625,497 B2Board of Regents of the Nevada System of Higher Education, on behalf of the University of Nevada, Reno · 2009
- Liquid crystal compounds, preparation thereof, and composition containing the same10US 7,022,259 B2Industrial Technology Research Institute · 2006
- Anisotropic fluorescent thin crystal film and backlight system and liquid crystal display incorporating the same10US 7,557,876 B2Nitto Denko Corporation · 2009
- Substituted phthalocyanines9US 5,506,708 AThe Secretary of State for Defence in Her Majesty's Government of the United Kingdom of Great Britain and Northern Ireland · 1996