G03G 2215/08
Details of powder developing device not concerning the development directly
G03G2215/08 (Details of powder developing device not concerning the development directly) appears on 2,137 US grants and 1,962 published applications in this corpus.
Search patents in G03G- Granted patents
- 2,137
- Published applications
- 1,962
- Assignees
- 154
- Inventors
- 3,036
- Latest grant
- 6 Oct 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 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 11 | 0 |
| 1996 | 35 | 0 |
| 1997 | 41 | 0 |
| 1998 | 54 | 0 |
| 1999 | 50 | 0 |
| 2000 | 54 | 0 |
| 2001 | 48 | 21 |
| 2002 | 58 | 49 |
| 2003 | 40 | 47 |
| 2004 | 38 | 33 |
| 2005 | 29 | 82 |
| 2006 | 66 | 91 |
| 2007 | 65 | 126 |
| 2008 | 48 | 158 |
| 2009 | 95 | 191 |
| 2010 | 139 | 116 |
| 2011 | 137 | 128 |
| 2012 | 151 | 84 |
| 2013 | 110 | 55 |
| 2014 | 92 | 81 |
| 2015 | 84 | 61 |
| 2016 | 93 | 58 |
| 2017 | 71 | 89 |
| 2018 | 70 | 68 |
| 2019 | 79 | 63 |
| 2020 | 69 | 55 |
| 2021 | 67 | 65 |
| 2022 | 42 | 59 |
| 2023 | 42 | 43 |
| 2024 | 42 | 48 |
| 2025 | 42 | 59 |
| 2026 | 33 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 2215/0802Arrangements for agitating or circulating developer materialIndexing code1,219
- G03G 2215/0855Materials and manufacturing of the developing deviceIndexing code454
- G03G 2215/0888Arrangements for detecting toner level or concentration in the developing deviceIndexing code432
- G03G 2215/0875Arrangements for shipping or transporting of the developing device to or fromIndexing code124
Recent patents
- Toner, toner production method, and image-forming method6 Oct 2026US 12,754,489 B2Canon Kabushiki Kaisha
- Image forming apparatus including toner conveyance detection portion detecting toner conveyance error in toner conveyance29 Sep 2026US 12,748,364 B2KYOCERA Document Solutions Inc.
- 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
- Image forming apparatus15 Sep 2026US 12,736,894 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.
- Development roll for electrophotographic equipment17 Sep 2026US 2026/0277130 A1Sumitomo Riko Company Limited
- Sheet-shaped sealing member, removable unit, and image forming apparatus17 Sep 2026US 2026/0277133 A1Ricoh Company, Ltd.
- Developing device, process cartridge, and imaging forming apparatus10 Sep 2026US 2026/0267257 A1Etria Co., Ltd.
Most cited
By later US patents
- Process cartridge, electrophotographic image forming apparatus and fixing method of electrical contact part229US 6,934,485 B2Canon Kabushiki Kaisha · 2005
- Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method184US 7,224,925 B2Canon Kabushiki Kaisha · 2007
- Developer feeding member, developing apparatus, process cartridge and developer feeding member mounting method169US 7,349,657 B2Canon Kabushiki Kaisha · 2008
- Developing device and process cartridge comprising first and second sealing members and electrophotographic image forming apparatus comprising a developing device comprising first and second sealing members165US 6,823,153 B2Canon Kabushiki Kaisha · 2004
- Developing cartridge157US 6,072,969 ACanon Kabushiki Kaisha · 2000