G03G 15/01
Apparatus for electrographic processes using a charge pattern: for producing multicoloured copies
Official title: for producing multicoloured copies
G03G15/01 (Apparatus for electrographic processes using a charge pattern: for producing multicoloured copies) appears on 6,223 US grants and 4,873 published applications in this corpus.
Search patents in G03G- Granted patents
- 6,223
- Published applications
- 4,873
- Assignees
- 261
- Inventors
- 7,187
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 21 | 0 |
| 1978 | 21 | 0 |
| 1979 | 9 | 0 |
| 1980 | 11 | 0 |
| 1981 | 7 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 7 | 0 |
| 1985 | 18 | 0 |
| 1986 | 23 | 0 |
| 1987 | 44 | 0 |
| 1988 | 57 | 0 |
| 1989 | 92 | 0 |
| 1990 | 112 | 0 |
| 1991 | 132 | 0 |
| 1992 | 158 | 0 |
| 1993 | 135 | 0 |
| 1994 | 138 | 0 |
| 1995 | 89 | 0 |
| 1996 | 133 | 0 |
| 1997 | 105 | 0 |
| 1998 | 150 | 0 |
| 1999 | 109 | 0 |
| 2000 | 137 | 0 |
| 2001 | 134 | 49 |
| 2002 | 113 | 103 |
| 2003 | 104 | 143 |
| 2004 | 106 | 180 |
| 2005 | 133 | 189 |
| 2006 | 137 | 258 |
| 2007 | 163 | 266 |
| 2008 | 166 | 259 |
| 2009 | 163 | 301 |
| 2010 | 242 | 274 |
| 2011 | 240 | 319 |
| 2012 | 304 | 316 |
| 2013 | 334 | 304 |
| 2014 | 386 | 202 |
| 2015 | 332 | 161 |
| 2016 | 206 | 142 |
| 2017 | 133 | 167 |
| 2018 | 148 | 193 |
| 2019 | 198 | 151 |
| 2020 | 159 | 134 |
| 2021 | 99 | 99 |
| 2022 | 96 | 89 |
| 2023 | 93 | 128 |
| 2024 | 86 | 125 |
| 2025 | 101 | 176 |
| 2026 | 101 | 145 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image forming apparatus6 Oct 2026US 12,754,496 B2Canon Kabushiki Kaisha
- Image forming apparatus6 Oct 2026US 12,754,507 B2Konica Minolta, Inc.
- Image forming apparatus29 Sep 2026US 12,748,360 B2Canon Kabushiki Kaisha
- Image forming apparatus29 Sep 2026US 12,748,361 B2Canon Kabushiki Kaisha
- Image forming apparatus29 Sep 2026US 12,748,371 B2Ricoh Company, Ltd.
- Image forming apparatus8 Oct 2026US 2026/0310115 A1Canon Kabushiki Kaisha
- Image forming apparatus8 Oct 2026US 2026/0310117 A1Canon Kabushiki Kaisha
- Image forming apparatus, control method for the same, and storage medium8 Oct 2026US 2026/0310127 A1Canon Kabushiki Kaisha
- Image forming apparatus1 Oct 2026US 2026/0299452 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus1 Oct 2026US 2026/0299453 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- System for electronically printing plural-color tamper-resistant documents338US 5,291,243 AXerox Corporation · 1994
- System for forming color images217US 6,708,011 B2Seiko Epson Corporation · 2004
- Image recording apparatus197US 5,208,640 AFuji Xerox Co., Ltd. · 1993
- Color imager bar based spectrophotometer for color printer color control system177US 6,621,576 B2Xerox Corporation · 2003
- Print sequence scheduling system for duplex printing apparatus164US 5,504,568 AXerox Corporation · 1996