C09B 47/32
Cationic phthalocyanine dyes
C09B47/32 (Cationic phthalocyanine dyes) appears on 31 US grants and 9 published applications in this corpus.
Search patents in C09B- Granted patents
- 31
- Published applications
- 9
- Assignees
- 19
- Inventors
- 58
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 4 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Antimicrobial dyes for facemasks24 Mar 2026US 12,582,179 B2BMG (British Medical Group) Limited
- Phthalocyanine dye compounds, conjugates and methods of use thereof21 Oct 2025US 12,448,518 B2Rakuten Medical, Inc.
- Three-dimensional dye, manufacturing method of three-dimensional dye and photoresist mixture23 Apr 2024US 11,965,101 B2Tcl China Star Optoelectronics Technology Co., Ltd.
- Phthalocyanine dye compounds, conjugates and methods of use thereof11 Oct 2022US 11,466,158 B2Rakuten Medical, Inc.
- Phthalocyanine salt formulations14 May 2013US 8,440,641 B2Case Western Reserve University
- Phthalocyanine dye compounds, conjugates and methods of use thereof14 Dec 2023US 2023/0399515 A1Rakuten Medical, Inc.
- Antimicrobial dyes for facemasks17 Nov 2022US 2022/0363906 A1Chemical Intelligence Limited
- Coloring composition, film, color filter, solid-state imaging element, and image display device22 Sep 2022US 2022/0299871 A1FUJIFILM Corporation
- Three-dimensional dye, manufacturing method of three-dimensional dye and photoresist mixture1 Sep 2022US 2022/0275212 A1Tcl China Star Optoelectronics Technology Co., Ltd.
- Phthalocyanine dye compounds, conjugates and methods of use thereof13 Jan 2022US 2022/0010140 A1Rakuten Medical, Inc.
Most cited
By later US patents
- Phthalocyanine dyes36US 7,005,518 B2LI-COR, Inc. · 2006
- Phthalocyanine photosensitizers for photodynamic therapy and methods for their use26US 5,484,778 AUniversity Hospitals of Cleveland · 1996
- Fabric conditioning compositions containing phthalocyanine substituted with quaternary ammonium group-containing sulphonamide photoactivator22US 4,368,053 ACiba-Geigy Corporation · 1983
- Copper phthalocyanine N-Di-N-butylaminoalkyl sulfonamide, quaternized solutions of the quaternary compound, and paper dyeing therewith9US 3,954,392 AAllied Chemical Corporation · 1976
- Water-soluble quaternary ammonium dyestuffs9US 3,996,282 ASterling Drug Inc. · 1976