G03G 21/08
Using optical radiation
Official title: using optical radiation
G03G21/08 (Using optical radiation) appears on 251 US grants and 171 published applications in this corpus.
Search patents in G03G- Granted patents
- 251
- Published applications
- 171
- Assignees
- 50
- Inventors
- 549
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 2 |
| 2002 | 2 | 5 |
| 2003 | 5 | 4 |
| 2004 | 3 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 6 |
| 2007 | 1 | 4 |
| 2008 | 5 | 7 |
| 2009 | 4 | 6 |
| 2010 | 4 | 9 |
| 2011 | 9 | 7 |
| 2012 | 5 | 3 |
| 2013 | 8 | 9 |
| 2014 | 8 | 5 |
| 2015 | 13 | 10 |
| 2016 | 14 | 22 |
| 2017 | 17 | 20 |
| 2018 | 19 | 6 |
| 2019 | 8 | 5 |
| 2020 | 6 | 5 |
| 2021 | 0 | 7 |
| 2022 | 8 | 7 |
| 2023 | 6 | 6 |
| 2024 | 8 | 7 |
| 2025 | 3 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus controlling pre-exposure of photosensitive drum8 Sep 2026US 12,730,392 B2Canon Kabushiki Kaisha
- Image forming apparatus18 Aug 2026US 12,710,705 B2Canon Kabushiki Kaisha
- Disruptions of toner transfers from developers to photoreceptors27 May 2025US 12,313,984 B2Hewlett-Packard Development Company, L. P.
- Image forming apparatus that includes an eraser drive circuit6 May 2025US 12,292,710 B2KYOCERA Document Solutions Inc.
- Image forming apparatus with brush that collects material adhered to surface of image bearing member and that includes brush portion including threads having specified thread density21 Jan 2025US 12,204,270 B2Canon Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310118 A1Canon Kabushiki Kaisha
- Light emitting members19 Feb 2026US 2026/0050230 A1Hewlett-Packard Development Company, L. P.
- Image forming apparatus6 Nov 2025US 2025/0341802 A1Canon Kabushiki Kaisha
- Image forming apparatus23 Oct 2025US 2025/0328104 A1Sharp Kabushiki Kaisha
- Image forming apparatus that exposes photosensitive body using plurality of light-emitting elements7 Aug 2025US 2025/0251675 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Light source58US 5,128,846 AInternational Business Machines Corporation · 1992
- Image-forming apparatus having an erase device located at a first or second position when the apparatus is in an opened or closed position37US 5,115,272 AMinolta Camera Kabushiki Kaisha · 1992
- Image forming apparatus and process cartridge detachably attachable to the same35US 6,738,588 B2Canon Kabushiki Kaisha · 2004
- Image forming apparatus having image transfer electrode contactable to transfer material23US 5,287,149 ACanon Kabushiki Kaisha · 1994
- System and method for conditioning a radiation detector21US 5,510,626 AMinnesota Mining and Manufacturing Company · 1996