G03G 21/206
Conducting air through the machine
Official title: {Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone}
G03G21/206 (Conducting air through the machine) appears on 1,336 US grants and 1,387 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,336
- Published applications
- 1,387
- Assignees
- 118
- Inventors
- 2,275
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 13 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 13 | 7 |
| 2002 | 16 | 17 |
| 2003 | 18 | 18 |
| 2004 | 13 | 27 |
| 2005 | 21 | 29 |
| 2006 | 28 | 45 |
| 2007 | 27 | 38 |
| 2008 | 30 | 35 |
| 2009 | 27 | 32 |
| 2010 | 31 | 26 |
| 2011 | 34 | 60 |
| 2012 | 29 | 52 |
| 2013 | 40 | 54 |
| 2014 | 67 | 64 |
| 2015 | 94 | 71 |
| 2016 | 88 | 72 |
| 2017 | 59 | 72 |
| 2018 | 69 | 70 |
| 2019 | 75 | 68 |
| 2020 | 75 | 71 |
| 2021 | 54 | 62 |
| 2022 | 61 | 89 |
| 2023 | 64 | 71 |
| 2024 | 67 | 70 |
| 2025 | 60 | 93 |
| 2026 | 44 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus22 Sep 2026US 12,743,049 B2Canon Kabushiki Kaisha
- Cooling device for fixing device22 Sep 2026US 12,743,050 B2Hewlett-Packard Development Company, L. P.
- Image forming apparatus having cyclonic separating portion, toner container, and developing apparatus15 Sep 2026US 12,736,896 B2Canon Kabushiki Kaisha
- Cartridge and image forming apparatus to convey toner using air8 Sep 2026US 12,730,393 B2Canon Kabushiki Kaisha
- Image forming apparatus with cooling configuration8 Sep 2026US 12,730,409 B2Canon Kabushiki Kaisha
- Post-processing device and image forming system using post-processing device1 Oct 2026US 2026/0299497 A1FUJIFILM Business Innovation Corp.
- Developing device1 Oct 2026US 2026/0299511 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus1 Oct 2026US 2026/0299512 A1Brother Kogyo Kabushiki Kaisha
- Image forming apparatus including main body housing, process unit, fixing device, exhaust fan, first duct, filter and seal1 Oct 2026US 2026/0299513 A1Brother Kogyo Kabushiki Kaisha
- Image forming apparatus24 Sep 2026US 2026/0285073 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Ozone collection and filtration system102US 4,388,274 AXerox Corporation · 1983
- Process kit and image forming apparatus using such kit96US 4,540,268 ACanon Kabushiki Kaisha · 1985
- Process cartridge and image forming apparatus83US 6,219,504 B1Canon Kabushiki Kaisha · 2001
- Recording apparatus and ink cartridge72US 4,893,137 ACanon Kabushiki Kaisha · 1990
- Particulate filtering58US 4,188,197 ADennison Manufacturing Company · 1980