G03G 2221/1687
Using opening shell type machines
Official title: using opening shell type machines, e.g. pivoting assemblies
G03G2221/1687 (Using opening shell type machines) appears on 472 US grants and 272 published applications in this corpus.
Search patents in G03G- Granted patents
- 472
- Published applications
- 272
- Assignees
- 68
- Inventors
- 834
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 15 | 0 |
| 1987 | 19 | 0 |
| 1988 | 11 | 0 |
| 1989 | 15 | 0 |
| 1990 | 17 | 0 |
| 1991 | 16 | 0 |
| 1992 | 18 | 0 |
| 1993 | 9 | 0 |
| 1994 | 18 | 0 |
| 1995 | 13 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 17 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 3 |
| 2002 | 4 | 6 |
| 2003 | 2 | 2 |
| 2004 | 1 | 4 |
| 2005 | 4 | 12 |
| 2006 | 11 | 19 |
| 2007 | 8 | 23 |
| 2008 | 12 | 21 |
| 2009 | 11 | 29 |
| 2010 | 22 | 27 |
| 2011 | 24 | 21 |
| 2012 | 26 | 14 |
| 2013 | 21 | 8 |
| 2014 | 18 | 7 |
| 2015 | 13 | 9 |
| 2016 | 10 | 3 |
| 2017 | 5 | 5 |
| 2018 | 4 | 10 |
| 2019 | 8 | 1 |
| 2020 | 4 | 6 |
| 2021 | 9 | 8 |
| 2022 | 4 | 7 |
| 2023 | 7 | 7 |
| 2024 | 9 | 7 |
| 2025 | 6 | 4 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus28 Apr 2026US 12,613,492 B2Canon Kabushiki Kaisha
- Housing structure and recording device17 Mar 2026US 12,578,673 B2Seiko Epson Corporation
- Image forming apparatus having a filter that covers an opening portion10 Mar 2026US 12,572,111 B2Canon Kabushiki Kaisha
- Image formation apparatus with cover member and exposure unit5 Aug 2025US 12,379,687 B2Oki Electric Industry Co., Ltd.
- Sheet feeding device and image forming system8 Jul 2025US 12,351,409 B2Canon Kabushiki Kaisha
- Housing and image forming apparatus24 Sep 2026US 2026/0288053 A1FUJIFILM Business Innovation Corp.
- Imaging device20 Aug 2026US 2026/0244153 A1Panasonic Intellectual Property Management Co., Ltd.
- Image forming apparatus with simple configuration capable of opening and closing shutter of developing agent container in conjunction with opening and closing operation of cover portion30 Jul 2026US 2026/0219631 A1KYOCERA Document Solutions Inc.
- Image forming apparatus26 Mar 2026US 2026/0086493 A1Canon Kabushiki Kaisha
- Image forming apparatus26 Mar 2026US 2026/0086495 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Process cartridge and image forming apparatus280US 5,585,889 ACanon Kabushiki Kaisha · 1996
- Image forming apparatus and a unit detachably used in the same99US 4,500,195 ACanon Kabushiki Kaisha · 1985
- Process cartridge and image forming system on which the process cartridge is mountable using a handgrip99US 5,475,470 ACanon Kabushiki Kaisha · 1995
- Process cartridge detectably mountable to image forming apparatus and image forming apparatus using same92US 5,893,006 ACanon Kabushiki Kaisha · 1999
- Process cartridge having a particular arrangement of electrical contacts and electrophotographic image forming apparatus using such a process cartridge86US 5,870,655 ACanon Kabushiki Kaisha · 1999