G03G 9/09741
Cationic
Official title: {cationic}
G03G9/09741 (Cationic) appears on 311 US grants and 140 published applications in this corpus.
Search patents in G03G- Granted patents
- 311
- Published applications
- 140
- Assignees
- 75
- Inventors
- 623
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 15 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 11 | 0 |
| 1993 | 16 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 19 | 0 |
| 1997 | 21 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 6 | 0 |
| 2002 | 7 | 6 |
| 2003 | 5 | 5 |
| 2004 | 3 | 5 |
| 2005 | 1 | 9 |
| 2006 | 5 | 9 |
| 2007 | 10 | 9 |
| 2008 | 6 | 9 |
| 2009 | 7 | 15 |
| 2010 | 5 | 11 |
| 2011 | 9 | 3 |
| 2012 | 8 | 3 |
| 2013 | 8 | 9 |
| 2014 | 11 | 8 |
| 2015 | 9 | 6 |
| 2016 | 5 | 4 |
| 2017 | 2 | 1 |
| 2018 | 4 | 9 |
| 2019 | 6 | 5 |
| 2020 | 3 | 5 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 4 |
| 2025 | 4 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Charge control agents and particle dispersions including the same28 Oct 2025US 12,454,598 B2E Ink Corporation
- Toner comprising reactive charge control agent2 Sep 2025US 12,405,547 B2Xerox Corporation
- Cartridge and image forming apparatus22 Apr 2025US 12,282,269 B2Canon Kabushiki Kaisha
- Charge control agents and particle dispersions including the same14 Jan 2025US 12,195,586 B2E Ink Corporation
- Toner30 Apr 2024US 11,971,684 B2Zeon Corporation
- Positively chargeable toner particles, toner compositions, and methods for production thereof10 Sep 2026US 2026/0267249 A1Xerox Corporation
- Toner, process cartridge, and electrophotographic image forming apparatus23 Jul 2026US 2026/0211352 A1Canon Kabushiki Kaisha
- Toner and image forming method26 Feb 2026US 2026/0056485 A1Zeon Corporation
- Two-component developer12 Sep 2024US 2024/0302762 A1KYOCERA Document Solutions Inc.
- Charge control agents and particle dispersions including the same22 Aug 2024US 2024/0279391 A1E Ink Corporation
Most cited
By later US patents
- Quarternary ammonium sulfate or sulfonate charge control agents for electrophotographic developers compatible with viton fuser442US 4,338,390 AXerox Corporation · 1982
- Process of making toner compositions324US 5,344,738 AXerox Corporation · 1994
- Toner compositions with ammonium sulfate charge enhancing additives290US 4,560,635 AXerox Corporation · 1985
- Electrophotographic dry toner and developer compositions195US 4,394,430 AEastman Kodak Company · 1983
- Toner processes111US 5,863,698 AXerox Corporation · 1999