G03G 15/0862
The level being measured by optical means
Official title: {the level being measured by optical means}
G03G15/0862 (The level being measured by optical means) appears on 279 US grants and 233 published applications in this corpus.
Search patents in G03G- Granted patents
- 279
- Published applications
- 233
- Assignees
- 46
- Inventors
- 513
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 4 | 4 |
| 2002 | 6 | 3 |
| 2003 | 4 | 5 |
| 2004 | 2 | 8 |
| 2005 | 8 | 14 |
| 2006 | 10 | 15 |
| 2007 | 11 | 10 |
| 2008 | 6 | 14 |
| 2009 | 7 | 12 |
| 2010 | 12 | 13 |
| 2011 | 12 | 13 |
| 2012 | 20 | 18 |
| 2013 | 12 | 10 |
| 2014 | 17 | 6 |
| 2015 | 13 | 4 |
| 2016 | 8 | 8 |
| 2017 | 10 | 11 |
| 2018 | 8 | 6 |
| 2019 | 6 | 7 |
| 2020 | 6 | 2 |
| 2021 | 12 | 13 |
| 2022 | 7 | 10 |
| 2023 | 6 | 8 |
| 2024 | 10 | 7 |
| 2025 | 5 | 6 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Image forming apparatus including toner conveyance detection portion detecting toner conveyance error in toner conveyance29 Sep 2026US 12,748,364 B2KYOCERA Document Solutions Inc.
- Image forming device that determines when to fill toner for forming images25 Aug 2026US 12,717,253 B2Sharp Kabushiki Kaisha
- Image forming apparatus that sets a target temperature based on a developer amount in a developer storage portion3 Mar 2026US 12,566,394 B2Canon Kabushiki Kaisha
- Image forming apparatus having detection of stored toner amount18 Nov 2025US 12,474,652 B2Canon Kabushiki Kaisha
- Image forming apparatus and image forming system with display of remaining toner amount30 Sep 2025US 12,429,797 B2Canon Kabushiki Kaisha
- Image forming apparatus1 Oct 2026US 2026/0299462 A1
- Substrate unit and image forming apparatus24 Sep 2026US 2026/0288034 A1Canon Kabushiki Kaisha
- System including image forming apparatus and server apparatus10 Sep 2026US 2026/0267579 A1Canon Kabushiki Kaisha
- Image forming apparatus that forms image on sheet using rotary developing scheme27 Aug 2026US 2026/0251999 A1Canon Kabushiki Kaisha
- Image forming apparatus4 Jun 2026US 2026/0153820 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Developing cartridge157US 6,072,969 ACanon Kabushiki Kaisha · 2000
- Development cartridge and image forming apparatus86US 6,151,459 ACanon Kabushiki Kaisha · 2000
- Capacity determination for toner or ink cartridge85US 6,456,802 B1Hewlett-Packard Company · 2002
- Developing cartridge, for a revolver type developing device, with sensing means for sensing the remaining toner81US 6,061,535 ACanon Kabushiki Kaisha · 2000
- Developing apparatus, process cartridge, and image forming apparatus70US 7,072,594 B2Canon Kabushiki Kaisha · 2006