C09K 19/3486
The heterocyclic ring containing nitrogen and oxygen atoms
Official title: {the heterocyclic ring containing nitrogen and oxygen atoms}
C09K19/3486 (The heterocyclic ring containing nitrogen and oxygen atoms) appears on 47 US grants and 61 published applications in this corpus.
Search patents in C09K- Granted patents
- 47
- Published applications
- 61
- Assignees
- 15
- Inventors
- 141
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 5 |
| 2016 | 4 | 4 |
| 2017 | 2 | 7 |
| 2018 | 6 | 8 |
| 2019 | 5 | 4 |
| 2020 | 8 | 4 |
| 2021 | 3 | 2 |
| 2022 | 4 | 6 |
| 2023 | 4 | 7 |
| 2024 | 3 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polymerisable liquid crystal material and polymerised liquid crystal film21 Jul 2026US 12,686,820 B2Merck Patent GmbH
- Polymerizable liquid crystal compound, polymerizable composition, polymer, retardation film, method for producing retardation film, transfer laminate, optical member, method for producing optical member, and display device25 Nov 2025US 12,480,051 B2Dai Nippon Printing Co.Ltd.
- Optically anisotropic layer, method of manufacturing the same, laminate, method of manufacturing the same, polarizing plate, liquid crystal display device, and organic EL display device3 Sep 2024US 12,078,832 B2FUJIFILM Corporation
- Light absorption anisotropic film, laminate, and image display device16 Apr 2024US 11,960,182 B2FUJIFILM Corporation
- Image display apparatus, information display system for vehicle, and optical film30 Jan 2024US 11,885,995 B2FUJIFILM Corporation
- Liquid-Crystal Medium Comprising Polymerizable Compounds4 Dec 2025US 2025/0368897 A1Merck Patent GmbH
- Composition, molded article, laminated body, and method for producing composition10 Jul 2025US 2025/0223494 A1Daikin Industries, Ltd.
- Composition, molded body, laminate, and resin10 Jul 2025US 2025/0223495 A1Daikin Industries, Ltd.
- Liquid crystal composition, optical element, and light guide element4 Jan 2024US 2024/0004116 A1FUJIFILM Corporation
- Polymer compound, composition, and molded product23 Nov 2023US 2023/0374384 A1FUJIFILM Corporation
Most cited
By later US patents
- Compounds and liquid-crystalline medium15US 8,999,460 B2Merck Patent GmbH · 2015
- Compound, composition and thin film9US 7,696,353 B2FUJIFILM Corporation · 2010
- Compound, composition and thin film6US 8,304,554 B2FUJIFILM Corporation · 2012
- Mesogenic alkenyl functional maleimides and thermosets thereof5US 5,208,306 AThe Dow Chemical Company · 1993
- Polymerizable liquid crystal composition, polarized light-emitting coating material, novel naphtholactam derivative novel coumarin derivative, novel nile red derivative, and novel anthracene derivative4US 9,475,991 B2Adeka Corporation · 2016