G03G 15/5058
Using a test patch
Official title: {using a test patch}
G03G15/5058 (Using a test patch) appears on 1,250 US grants and 1,321 published applications in this corpus.
Search patents in G03G- Granted patents
- 1,250
- Published applications
- 1,321
- Assignees
- 63
- Inventors
- 1,678
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 3 |
| 2002 | 12 | 20 |
| 2003 | 13 | 8 |
| 2004 | 11 | 32 |
| 2005 | 19 | 37 |
| 2006 | 27 | 47 |
| 2007 | 35 | 57 |
| 2008 | 24 | 53 |
| 2009 | 35 | 82 |
| 2010 | 55 | 57 |
| 2011 | 69 | 105 |
| 2012 | 73 | 99 |
| 2013 | 102 | 87 |
| 2014 | 109 | 67 |
| 2015 | 120 | 78 |
| 2016 | 86 | 52 |
| 2017 | 51 | 77 |
| 2018 | 62 | 45 |
| 2019 | 59 | 56 |
| 2020 | 56 | 37 |
| 2021 | 34 | 42 |
| 2022 | 43 | 44 |
| 2023 | 34 | 48 |
| 2024 | 43 | 34 |
| 2025 | 24 | 35 |
| 2026 | 15 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Printing apparatus, printing method, and storage medium11 Aug 2026US 12,703,193 B2Canon Kabushiki Kaisha
- Image forming apparatus11 Aug 2026US 12,704,803 B2Canon Kabushiki Kaisha
- Image forming apparatus performing image density control based on developer amount7 Jul 2026US 12,675,069 B2Canon Kabushiki Kaisha
- Image forming apparatus16 Jun 2026US 12,656,721 B2Toshiba Tec Kabushiki Kaisha
- Image forming apparatus26 May 2026US 12,638,793 B2KYOCERA Document Solutions Inc.
- Image forming apparatus8 Oct 2026US 2026/0310118 A1Canon Kabushiki Kaisha
- Image forming apparatus30 Jul 2026US 2026/0219620 A1Canon Kabushiki Kaisha
- Detecting unit and image forming apparatus30 Jul 2026US 2026/0219621 A1Brother Kogyo Kabushiki Kaisha
- Image forming apparatus, fog margin setting method, and non-transitory computer-readable recording medium storing fog margin setting program9 Jul 2026US 2026/0194842 A1Konica Minolta, Inc.
- Electrophotographic rotating member and electrophotographic image forming apparatus25 Jun 2026US 2026/0177948 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Electrophotographic apparatus comprising density sensor means69US 4,277,162 ARicoh Company, Ltd. · 1981
- Gamma correction for apparatus using pre and post transfer image density59US 6,061,533 AMatsushita Electric Industrial Co., Ltd. · 2000
- Image forming apparatus having test patterns for correcting color discrepancy47US 5,854,958 AKabushiki Kaisha Toshiba · 1998
- System and method for controlling registration in a continuous feed tandem printer43US 8,303,071 B2Xerox Corporation · 2012
- Toner density control for electrophotographic print engine40US 5,103,260 AColorocs Corporation · 1992