G03G 21/0047
Using electrostatic or magnetic means
Official title: {using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices (G03G21/0064 takes precedence)}
G03G21/0047 (Using electrostatic or magnetic means) appears on 181 US grants and 85 published applications in this corpus.
Search patents in G03G- Granted patents
- 181
- Published applications
- 85
- Assignees
- 43
- Inventors
- 397
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 8 | 0 |
| 1983 | 3 | 0 |
| 1984 | 12 | 0 |
| 1985 | 10 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 4 |
| 2007 | 2 | 3 |
| 2008 | 5 | 6 |
| 2009 | 4 | 3 |
| 2010 | 2 | 4 |
| 2011 | 6 | 3 |
| 2012 | 2 | 8 |
| 2013 | 3 | 6 |
| 2014 | 5 | 0 |
| 2015 | 4 | 3 |
| 2016 | 0 | 1 |
| 2017 | 2 | 5 |
| 2018 | 5 | 4 |
| 2019 | 5 | 2 |
| 2020 | 2 | 5 |
| 2021 | 3 | 1 |
| 2022 | 1 | 2 |
| 2023 | 2 | 6 |
| 2024 | 5 | 5 |
| 2025 | 2 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Printing system, control method thereof, and storage medium2 Jun 2026US 12,645,178 B2Canon Kabushiki Kaisha
- Image forming apparatus16 Sep 2025US 12,416,894 B2Ricoh Company, Ltd.
- Sheet characteristic detection device, image forming system including the same, and image forming apparatus8 Jul 2025US 12,353,152 B2Konica Minolta, Inc.
- Image forming apparatus including discharge member that supply discharge current to intermediate transfer belt onto which toner image is trnasferred22 Oct 2024US 12,124,181 B2Canon Kabushiki Kaisha
- Image forming apparatus27 Aug 2024US 12,072,654 B2Canon Kabushiki Kaisha
- Cartridge and image forming apparatus9 Jul 2026US 2026/0194853 A1Canon Kabushiki Kaisha
- Image forming apparatus4 Jun 2026US 2026/0153830 A1Canon Kabushiki Kaisha
- Image forming apparatus28 May 2026US 2026/0147306 A1Canon Kabushiki Kaisha
- Printing system, control method thereof, and storage medium31 Jul 2025US 2025/0244710 A1Canon Kabushiki Kaisha
- Electrostatic collecting device, image forming device, and cleaning device1 May 2025US 2025/0138468 A1
Most cited
By later US patents
- Electrostatic display apparatus57US 4,335,955 ARagen Precision Industries, Inc. · 1982
- Apparatus for cleaning a recording medium32US 4,499,849 ARicoh Company, Ltd. · 1985
- Cleaning device for photoconductive element of electrophotographic copier or the like32US 4,571,070 ARicoh Company, Ltd. · 1986
- Electrophotography apparatus and electrophtographic process for developing positive image from positive or negative film32US 4,885,221 AKabushiki Kaisha Toshiba · 1989
- Coated roll for magnetic brush development and cleaning systems30US 3,950,089 AXerox Corporation · 1976