G03G 9/083
Magnetic toner particles
G03G9/083 (Magnetic toner particles) appears on 581 US grants and 370 published applications in this corpus.
Search patents in G03G- Granted patents
- 581
- Published applications
- 370
- Assignees
- 100
- Inventors
- 1,005
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 25 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 19 | 0 |
| 1995 | 14 | 0 |
| 1996 | 28 | 0 |
| 1997 | 20 | 0 |
| 1998 | 21 | 0 |
| 1999 | 19 | 0 |
| 2000 | 17 | 0 |
| 2001 | 10 | 4 |
| 2002 | 12 | 19 |
| 2003 | 23 | 27 |
| 2004 | 11 | 14 |
| 2005 | 8 | 23 |
| 2006 | 14 | 31 |
| 2007 | 17 | 18 |
| 2008 | 16 | 10 |
| 2009 | 13 | 18 |
| 2010 | 11 | 11 |
| 2011 | 12 | 6 |
| 2012 | 7 | 13 |
| 2013 | 11 | 13 |
| 2014 | 11 | 19 |
| 2015 | 14 | 20 |
| 2016 | 23 | 12 |
| 2017 | 15 | 8 |
| 2018 | 11 | 12 |
| 2019 | 14 | 13 |
| 2020 | 12 | 21 |
| 2021 | 13 | 11 |
| 2022 | 3 | 17 |
| 2023 | 10 | 8 |
| 2024 | 5 | 6 |
| 2025 | 4 | 5 |
| 2026 | 5 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 9/0831Chemical composition of the magnetic components313
- G03G 9/0836Other physical parameters of the magnetic components143
- G03G 9/0837Structural characteristics of the magnetic components130
- G03G 9/0835Magnetic parameters of the magnetic components122
- G03G 9/0839Treatment of the magnetic components121
- G03G 9/0838Size of magnetic components107
Recent patents
- Toner7 Jul 2026US 12,675,060 B2Canon Kabushiki Kaisha
- Electrostatic charge image developing toner and image forming method12 May 2026US 12,625,441 B2Konica Minolta, Inc.
- Cobalt ferrite particle production method and cobalt ferrite particles produced thereby3 Feb 2026US 12,540,082 B2Nittetsu Mining Co., Ltd.
- Magnetic toner27 Jan 2026US 12,535,748 B2Canon Kabushiki Kaisha
- Toner20 Jan 2026US 12,529,972 B2Canon Kabushiki Kaisha
- Toner27 Aug 2026US 2026/0251991 A1KYOCERA Document Solutions Inc.
- Magnetic one-component toner6 Aug 2026US 2026/0227720 A1KYOCERA Document Solutions Inc.
- Two-component developer28 May 2026US 2026/0147287 A1
- Magnetic one-component toner and image forming apparatus using the same14 May 2026US 2026/0133515 A1KYOCERA Document Solutions Inc.
- Magnetic one-component toner and image forming apparatus using the same14 May 2026US 2026/0133518 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Plastic additive, plastic composition containing the additive and plastic molding containing the additive276US 5,648,013 ACanon Kabushiki Kaisha · 1997
- Two-component, dry electrographic developer compositions containing hard magnetic carrier particles and method for using the same138US 4,546,060 AEastman Kodak Company · 1985
- Toner78US 8,084,174 B2Canon Kabushiki Kaisha · 2011
- Encapsulated magnetic particles pigments and carbon black, compositions and methods related thereto77US 5,543,219 AA. B. Dick Company · 1996
- Ferromagnetic toner containing water-soluble or water-solubilizable resin(s)73US 4,105,572 AE. I. Du Pont de Nemours and Company · 1978