G03G 15/0891
For conveying or circulating developer
Official title: {for conveying or circulating developer, e.g. augers}
G03G15/0891 (For conveying or circulating developer) appears on 1,289 US grants and 1,327 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,289
- Published applications
- 1,327
- Assignees
- 79
- Inventors
- 1,621
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 14 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 4 |
| 2002 | 6 | 4 |
| 2003 | 10 | 8 |
| 2004 | 4 | 17 |
| 2005 | 11 | 17 |
| 2006 | 18 | 33 |
| 2007 | 13 | 51 |
| 2008 | 24 | 41 |
| 2009 | 29 | 58 |
| 2010 | 41 | 49 |
| 2011 | 51 | 53 |
| 2012 | 61 | 67 |
| 2013 | 48 | 72 |
| 2014 | 85 | 52 |
| 2015 | 84 | 70 |
| 2016 | 92 | 81 |
| 2017 | 74 | 95 |
| 2018 | 87 | 87 |
| 2019 | 95 | 56 |
| 2020 | 74 | 70 |
| 2021 | 51 | 58 |
| 2022 | 62 | 75 |
| 2023 | 51 | 47 |
| 2024 | 37 | 43 |
| 2025 | 39 | 78 |
| 2026 | 33 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Developing device including spiral blade for conveying developer while rotating and image forming apparatus22 Sep 2026US 12,743,039 B2KYOCERA Document Solutions Inc.
- Toner cartridge and image forming apparatus22 Sep 2026US 12,743,040 B2Canon Kabushiki Kaisha
- Conveying screw and image forming apparatus15 Sep 2026US 12,736,910 B2KYOCERA Document Solutions Inc.
- Recording material estimation method, information processing apparatus, and consumable8 Sep 2026US 12,730,404 B2Zhuhai Pantum Electronics Co., Ltd.
- Image forming apparatus1 Sep 2026US 12,724,362 B2Canon Kabushiki Kaisha
- Sleeve, developer carrying member, and developing device8 Oct 2026US 2026/0310116 A1Canon Kabushiki Kaisha
- Powder transportation device and image forming apparatus1 Oct 2026US 2026/0299465 A1FUJIFILM Business Innovation Corp.
- Developing apparatus24 Sep 2026US 2026/0288035 A1Canon Kabushiki Kaisha
- Developer accommodating device, developing device, cartridge and image forming apparatus17 Sep 2026US 2026/0277134 A1Canon Kabushiki Kaisha
- Toner conveying device, and developing device and image forming apparatus therewith17 Sep 2026US 2026/0277135 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Process cartridge, unit, and electrophotographic image forming apparatus169US 6,912,365 B2Canon Kabushiki Kaisha · 2005
- Developer agitating member123US 6,834,175 B2Canon Kabushiki Kaisha · 2004
- Developing device frame, process cartridge, and electrophotographic image forming apparatus99US 6,343,192 B12002
- Direct electrostatic printing apparatus and toner/developer delivery system therefor86US 4,743,926 AXerox Corporation · 1988
- Developing device, process cartridge and electrophotographic image forming apparatus81US 6,144,815 ACanon Kabushiki Kaisha · 2000