C09B 21/00
Thiazine dyes
C09B21/00 (Thiazine dyes) appears on 174 US grants and 175 published applications in this corpus.
Search patents in C09B- Granted patents
- 174
- Published applications
- 175
- Assignees
- 121
- Inventors
- 480
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 1 | 8 |
| 2007 | 4 | 4 |
| 2008 | 1 | 4 |
| 2009 | 1 | 8 |
| 2010 | 6 | 6 |
| 2011 | 6 | 8 |
| 2012 | 1 | 3 |
| 2013 | 5 | 9 |
| 2014 | 8 | 11 |
| 2015 | 9 | 15 |
| 2016 | 8 | 13 |
| 2017 | 15 | 13 |
| 2018 | 12 | 10 |
| 2019 | 15 | 12 |
| 2020 | 9 | 14 |
| 2021 | 8 | 6 |
| 2022 | 9 | 6 |
| 2023 | 4 | 3 |
| 2024 | 7 | 5 |
| 2025 | 5 | 7 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluorescent organic light emitting elements having high efficiency5 May 2026US 12,622,170 B2UDC Ireland Limited
- Electrochromic dyes and their use in electrochromic devices30 Dec 2025US 12,509,471 B2Polyceed Inc.
- Phenothiazine compound, its preparation and use in rubber blends and vehicle tires, as ageing protectant, antioxidant, antiozonant and colorant25 Nov 2025US 12,479,810 B2Continental Reifen Deutschland GmbH
- Process for the preparation of methylene blue14 Oct 2025US 12,441,694 B2Dishman Carbogen Amcis Limited
- 3, 7-diamino-10H-phenothiazine salts and their use10 Jun 2025US 12,324,810 B2WisTa Laboratories Ltd.
- Ultraviolet and Visible Light Responsive Coatings Using Redox-Active Colorants and Semiconductors15 Jan 2026US 2026/0015515 A1Northeastern University
- Photosensitive composition, hologram recording medium, hologram optical element, optical device, and electronic device4 Dec 2025US 2025/0370407 A1Sony Group Corporation
- 3, 7-diamino-10h-phenothiazine salts and their use23 Oct 2025US 2025/0325557 A1WisTa Laboratories Ltd.
- Purification method for electron mediator28 Aug 2025US 2025/0270177 A1Leadway (Hk) Limited
- Methods of synthesis and/or purification of diaminophenothiazinium compounds10 Jul 2025US 2025/0222006 A1WisTa Laboratories Ltd.
Most cited
By later US patents
- Process for preparing diaminophenothiazinium compounds687US 8,765,942 B2Provence Technologies · 2014
- Laminating transparent or translucent materials using ionic dye-counter ion complexes56US 4,874,450 AThe Mead Corporation · 1989
- Novel oxazine-ureas and thiazine urea chromophors as fluorescent labels51US 4,714,763 AViomedics Inc. · 1987
- Radiation-curable ink and coating compositions containing ionic dye compounds as initiators50US 4,751,102 AThe Mead Corporation · 1988
- Thermosensitive-recording-type label sheet36US 4,424,245 ARicoh Company, Ltd. · 1984