G03G 21/1628
Clamshell type
Official title: {Clamshell type (G03G21/1638 takes precedence)}
G03G21/1628 (Clamshell type) appears on 362 US grants and 147 published applications in this corpus.
Search patents in G03G- Granted patents
- 362
- Published applications
- 147
- Assignees
- 58
- Inventors
- 636
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 16 | 0 |
| 1987 | 18 | 0 |
| 1988 | 11 | 0 |
| 1989 | 22 | 0 |
| 1990 | 21 | 0 |
| 1991 | 19 | 0 |
| 1992 | 14 | 0 |
| 1993 | 15 | 0 |
| 1994 | 17 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 3 |
| 2002 | 6 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 5 |
| 2006 | 4 | 8 |
| 2007 | 2 | 12 |
| 2008 | 4 | 13 |
| 2009 | 5 | 6 |
| 2010 | 14 | 5 |
| 2011 | 9 | 11 |
| 2012 | 9 | 7 |
| 2013 | 7 | 6 |
| 2014 | 8 | 9 |
| 2015 | 14 | 3 |
| 2016 | 4 | 5 |
| 2017 | 4 | 7 |
| 2018 | 6 | 6 |
| 2019 | 7 | 5 |
| 2020 | 9 | 9 |
| 2021 | 10 | 10 |
| 2022 | 7 | 3 |
| 2023 | 1 | 4 |
| 2024 | 5 | 2 |
| 2025 | 3 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Medium transport apparatus12 May 2026US 12,625,457 B2Oki Electric Industry Co., Ltd.
- Image forming apparatus28 Apr 2026US 12,613,492 B2Canon Kabushiki Kaisha
- Unit locating mechanism and image forming apparatus12 Aug 2025US 12,386,287 B2KYOCERA Document Solutions Inc.
- Image forming apparatus29 Jul 2025US 12,372,921 B2Oki Electric Industry Co., Ltd.
- Sheet feeding device and image forming system8 Jul 2025US 12,351,409 B2Canon Kabushiki Kaisha
- 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 Feb 2026US 2026/0059059 A1KYOCERA Document Solutions Inc.
- Medium transport apparatus28 Aug 2025US 2025/0271810 A1Oki Electric Industry Co., Ltd.
- Image forming apparatus14 Aug 2025US 2025/0258461 A1Canon Kabushiki Kaisha
- Unit locating mechanism and image forming apparatus27 Feb 2025US 2025/0068102 A1KYOCERA Document Solutions Inc.
Most cited
By later US patents
- Grounding member, flange, photosensitive drum, process cartridge and electrophotographic image forming apparatus137US 6,167,219 ACanon Kabushiki Kaisha · 2000
- Mounting member for mounting a flange to an end of a cylindrical member of an electrophotographic photosensitive drum of a process cartridge, such a flange, such a drum, and such a process cartridge136US 6,336,017 B12002
- Copier with retractable charging unit to prevent damage to drum when removing process cartridge104US 5,095,335 ACanon Kabushiki Kaisha · 1992
- Image forming apparatus and a unit detachably used in the same99US 4,500,195 ACanon Kabushiki Kaisha · 1985
- Process cartridge and image forming apparatus using same73US 5,235,383 ACanon Kabushiki Kaisha · 1993