G03G 15/0848
Arrangements for testing or measuring developer properties or quality
Official title: {Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability}
G03G15/0848 (Arrangements for testing or measuring developer properties or quality) appears on 2,992 US grants and 2,269 published applications in this corpus.
Search patents in G03G- Granted patents
- 2,992
- Published applications
- 2,269
- Assignees
- 194
- Inventors
- 4,057
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 8 | 0 |
| 1980 | 16 | 0 |
| 1981 | 17 | 0 |
| 1982 | 17 | 0 |
| 1983 | 14 | 0 |
| 1984 | 13 | 0 |
| 1985 | 24 | 0 |
| 1986 | 24 | 0 |
| 1987 | 22 | 0 |
| 1988 | 13 | 0 |
| 1989 | 20 | 0 |
| 1990 | 47 | 0 |
| 1991 | 47 | 0 |
| 1992 | 44 | 0 |
| 1993 | 53 | 0 |
| 1994 | 35 | 0 |
| 1995 | 37 | 0 |
| 1996 | 62 | 0 |
| 1997 | 54 | 0 |
| 1998 | 75 | 0 |
| 1999 | 64 | 0 |
| 2000 | 64 | 0 |
| 2001 | 64 | 40 |
| 2002 | 82 | 76 |
| 2003 | 90 | 76 |
| 2004 | 61 | 87 |
| 2005 | 69 | 109 |
| 2006 | 87 | 113 |
| 2007 | 92 | 135 |
| 2008 | 82 | 146 |
| 2009 | 91 | 167 |
| 2010 | 133 | 124 |
| 2011 | 122 | 121 |
| 2012 | 148 | 111 |
| 2013 | 102 | 78 |
| 2014 | 117 | 81 |
| 2015 | 120 | 83 |
| 2016 | 110 | 90 |
| 2017 | 63 | 69 |
| 2018 | 72 | 87 |
| 2019 | 101 | 70 |
| 2020 | 86 | 79 |
| 2021 | 78 | 100 |
| 2022 | 78 | 54 |
| 2023 | 43 | 39 |
| 2024 | 38 | 45 |
| 2025 | 36 | 52 |
| 2026 | 26 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
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 apparatus generating electrical discharge upstream of transfer portion22 Sep 2026US 12,743,041 B2Canon Kabushiki Kaisha
- Image forming apparatus15 Sep 2026US 12,736,894 B2Canon Kabushiki Kaisha
- Image forming apparatus1 Sep 2026US 12,724,360 B2Ricoh Company, Ltd.
- Image forming device that determines when to fill toner for forming images25 Aug 2026US 12,717,253 B2Sharp Kabushiki Kaisha
- Image forming apparatus1 Oct 2026US 2026/0299462 A1
- Image forming apparatus1 Oct 2026US 2026/0299485 A1Canon Kabushiki Kaisha
- Substrate unit and image forming apparatus24 Sep 2026US 2026/0288034 A1Canon Kabushiki Kaisha
- Replenishment management system including image forming apparatus and server apparatus24 Sep 2026US 2026/0288041 A1Canon Kabushiki Kaisha
- Image forming apparatus24 Sep 2026US 2026/0288042 A1
Most cited
By later US patents
- Replaceable part with integral memory for usage, calibration and other data311US 5,835,817 AHewlett-Packard Company · 1998
- Arrangement for printer equipment for monitoring reservoirs that contain printing medium284US 5,365,312 AMannesmann Aktiengesellschaft · 1994
- Method of calibrating a spatial light modulator printing system280US 5,842,088 ATexas Instruments Incorporated · 1998
- Replaceable part with integral memory for usage, calibration and other data276US 5,699,091 AHewlett-Packard Company · 1997
- Imaging apparatus cartridge including an encoded device182US 5,995,772 ALexmark International, Inc. · 1999