G03G 9/0918
Phthalocyanine dyes
Official title: {Phthalocyanine dyes}
G03G9/0918 (Phthalocyanine dyes) appears on 237 US grants and 221 published applications in this corpus.
Search patents in G03G- Granted patents
- 237
- Published applications
- 221
- Assignees
- 62
- Inventors
- 664
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 8 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 8 |
| 2003 | 6 | 9 |
| 2004 | 4 | 7 |
| 2005 | 2 | 6 |
| 2006 | 5 | 7 |
| 2007 | 9 | 3 |
| 2008 | 8 | 12 |
| 2009 | 1 | 15 |
| 2010 | 2 | 8 |
| 2011 | 9 | 9 |
| 2012 | 10 | 10 |
| 2013 | 9 | 8 |
| 2014 | 5 | 5 |
| 2015 | 4 | 5 |
| 2016 | 5 | 10 |
| 2017 | 15 | 32 |
| 2018 | 35 | 19 |
| 2019 | 12 | 8 |
| 2020 | 8 | 7 |
| 2021 | 3 | 5 |
| 2022 | 1 | 8 |
| 2023 | 5 | 9 |
| 2024 | 4 | 3 |
| 2025 | 3 | 3 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Method of producing toner71US 9,880,478 B2Canon Kabushiki Kaisha · 2018
- Dry type developer for electrophotography52US 4,980,258 ARicoh Company, Ltd. · 1990
- Toner and method of producing toner47US 10,146,146 B2Canon Kabushiki Kaisha · 2018
- Toner46US 10,012,921 B2Canon Kabushiki Kaisha · 2018
- Fluorescent carbamate-modified phthalocyanine pigments46US 5,811,543 ACiba Speciality Chemicals Corporation · 1998