C09B 47/30
Metal-free phthalocyanines
C09B47/30 (Metal-free phthalocyanines) appears on 34 US grants and 35 published applications in this corpus.
Search patents in C09B- Granted patents
- 34
- Published applications
- 35
- Assignees
- 36
- Inventors
- 133
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 4 |
| 2008 | 0 | 2 |
| 2009 | 1 | 2 |
| 2010 | 3 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 2 | 5 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 2 | 4 |
| 2021 | 0 | 1 |
| 2022 | 1 | 4 |
| 2023 | 1 | 3 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Conjugate of phthalocy anine dye and antibody or peptide1 Sep 2026US 12,721,903 B2Complecure, Inc.
- Phthalocyanine dye compounds, conjugates and methods of use thereof21 Oct 2025US 12,448,518 B2Rakuten Medical, Inc.
- Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge10 Jun 2025US 12,326,692 B2FUJIFILM Business Innovation Corp.
- Liquid color masterbatch composition and fabricating method for colored fiber27 Aug 2024US 12,071,522 B2Taiwan Textile Research Institute
- Composition, film, infrared transmitting filter, and solid-state imaging element5 Mar 2024US 11,920,041 B2FUJIFILM Corporation
- Display device3 Jul 2025US 2025/0221228 A1LG Display Co., Ltd.
- Phthalocyanine compound11 Apr 2024US 2024/0116953 A1DIC Corporation
- Phthalocyanine dye compounds, conjugates and methods of use thereof14 Dec 2023US 2023/0399515 A1Rakuten Medical, Inc.
- Conjugate of phthalocyanine dye and antibody or peptide27 Apr 2023US 2023/0125454 A1Savid Therapeutics Inc.
- Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge6 Apr 2023US 2023/0105118 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Infra-red absorber44US 4,606,859 AImperial Chemical Industries PLC · 1986
- Compounds for dual photodiagnosis and therapy21US 7,230,088 B2Mallinckrodt Inc. · 2007
- Composite type photosensitive member having metal-free phthalocyanine in the charge generating layer and nonionic dye base in the charge transport layer13US 4,619,879 AHitachi, Ltd. · 1986
- Electrophotographic recording medium containing .tau. and .eta. metal-free phthalocyanine11US 4,507,374 AHitachi, Ltd. · 1985
- Metal-free, substituted phthalocyanines in the .chi.-modification9US 5,367,069 ABayer Aktiengesellschaft · 1994