C09K 19/606
Perylene dyes
Official title: {Perylene dyes}
C09K19/606 (Perylene dyes) appears on 40 US grants and 31 published applications in this corpus.
Search patents in C09K- Granted patents
- 40
- Published applications
- 31
- Assignees
- 27
- Inventors
- 89
- Latest grant
- 9 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 2 |
| 2007 | 4 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 1 | 2 |
| 2013 | 3 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 3 |
| 2017 | 1 | 2 |
| 2018 | 2 | 2 |
| 2019 | 3 | 4 |
| 2020 | 4 | 0 |
| 2021 | 3 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Switching layers for use in a switching element9 Apr 2024US 11,952,528 B2Merck Patent GmbH
- Liquid crystalline medium9 Nov 2021US 11,168,257 B2Merck Patent GmbH
- Coatable grey polarizer30 Mar 2021US 10,962,696 B2Light Polymers Holding
- Liquid crystal element and method of producing the same16 Mar 2021US 10,948,780 B2Jsr Corporation
- Electro-polarizable compound and capacitor7 Jul 2020US 10,707,019 B2Capacitor Science Incorporated
- Switching layers for use in a switching element3 Mar 2022US 2022/0064532 A1Merck Patent GmbH
- Coatable grey polarizer1 Aug 2019US 2019/0235144 A1Light Polymers Holding
- Liquid crystalline medium23 May 2019US 2019/0153320 A1Merck Patent GmbH
- Electro-polarizable compound and capacitor9 May 2019US 2019/0139705 A1Capacitor Sciences Incorporated
- Device for regulating the entry of light31 Jan 2019US 2019/0031959 A1Merck Patent GmbH
Most cited
By later US patents
- Process of aligning and realigning liquid crystal media259US 4,974,941 AHercules Incorporated · 1990
- Process of aligning and realigning liquid crystal media136US 5,032,009 AHercules Incorporated · 1991
- Method and materials for thermostable and lightfast dichroic light polarizers82US 5,739,296 ARussian Technology Group · 1998
- Method for thermostable and lightfast dichroic light polarizers54US 6,174,394 B1Optiva, Inc. · 2001
- Perylenetetracarboxylic acid dibenzimidazole sulfoderivatives containing oxo-groups in the perylene core which form part of a para-quinoid system of bonds, lyotropic liquid crystal systems and anisotropic films containing the same, and methods for making the same27US 7,025,900 B2Nitto Denko Corporation · 2006