G03G 21/1896
Mechanical or optical identification means
Official title: {mechanical or optical identification means, e.g. protrusions, bar codes}
G03G21/1896 (Mechanical or optical identification means) appears on 284 US grants and 263 published applications in this corpus.
Search patents in G03G- Granted patents
- 284
- Published applications
- 263
- Assignees
- 37
- Inventors
- 309
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 7 |
| 2006 | 7 | 9 |
| 2007 | 5 | 8 |
| 2008 | 13 | 11 |
| 2009 | 11 | 3 |
| 2010 | 4 | 9 |
| 2011 | 2 | 8 |
| 2012 | 2 | 6 |
| 2013 | 4 | 20 |
| 2014 | 12 | 8 |
| 2015 | 20 | 24 |
| 2016 | 16 | 11 |
| 2017 | 24 | 24 |
| 2018 | 24 | 20 |
| 2019 | 21 | 14 |
| 2020 | 14 | 19 |
| 2021 | 16 | 15 |
| 2022 | 13 | 14 |
| 2023 | 17 | 8 |
| 2024 | 6 | 10 |
| 2025 | 11 | 8 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Developing cartridge for detachable mounting to an imaging device25 Aug 2026US 12,717,274 B2Zhuhai Un-Tern Imaging Products Co., Ltd
- Management system, method, image-forming apparatus, and server apparatus for replacing cartridges7 Jul 2026US 12,675,246 B2Canon Kabushiki Kaisha
- Developing cartridge including developing roller and coupling23 Jun 2026US 12,663,753 B2Brother Kogyo Kabushiki Kaisha
- Developing cartridge7 Apr 2026US 12,596,316 B2Zhuhai Ninestar Information Technology Co., Ltd
- Developing cartridge capable of reducing size of image forming apparatus23 Dec 2025US 12,504,704 B2Brother Kogyo Kabushiki Kaisha
- Management system, method, image-forming apparatus, and server apparatus1 Oct 2026US 2026/0299847 A1Canon Kabushiki Kaisha
- Developing cartridge including developing roller and coupling17 Sep 2026US 2026/0277153 A1Brother Kogyo Kabushiki Kaisha
- Toner container and image forming apparatus1 Jan 2026US 2026/0003306 A1
- Developing cartridge11 Dec 2025US 2025/0377626 A1Zhuhai Yanqi Technology Co., Ltd.
- Developing cartridge having coupling and developing roller23 Oct 2025US 2025/0328092 A1Brother Kogyo Kabushiki Kaisha
Most cited
By later US patents
- Imaging apparatus cartridge including an encoded device182US 5,995,772 ALexmark International, Inc. · 1999
- Image forming apparatus and a unit detachably used in the same99US 4,500,195 ACanon Kabushiki Kaisha · 1985
- 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
- Image forming apparatus having a sensor for determining whether a replacement unit is new/old and mounted/non-mounted81US 6,298,202 B12001