G03G 15/04
Apparatus for electrographic processes using a charge pattern: for exposing, i.e. imagewise
Official title: for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
G03G15/04 (Apparatus for electrographic processes using a charge pattern: for exposing, i.e. imagewise) appears on 4,288 US grants and 3,294 published applications in this corpus.
Search patents in G03G- Granted patents
- 4,288
- Published applications
- 3,294
- Assignees
- 296
- Inventors
- 5,193
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 42 | 0 |
| 1977 | 40 | 0 |
| 1978 | 61 | 0 |
| 1979 | 27 | 0 |
| 1980 | 25 | 0 |
| 1981 | 52 | 0 |
| 1982 | 39 | 0 |
| 1983 | 50 | 0 |
| 1984 | 62 | 0 |
| 1985 | 72 | 0 |
| 1986 | 79 | 0 |
| 1987 | 84 | 0 |
| 1988 | 102 | 0 |
| 1989 | 102 | 0 |
| 1990 | 127 | 0 |
| 1991 | 105 | 0 |
| 1992 | 81 | 0 |
| 1993 | 77 | 0 |
| 1994 | 45 | 0 |
| 1995 | 38 | 0 |
| 1996 | 43 | 0 |
| 1997 | 41 | 0 |
| 1998 | 49 | 0 |
| 1999 | 44 | 0 |
| 2000 | 20 | 0 |
| 2001 | 24 | 7 |
| 2002 | 21 | 19 |
| 2003 | 15 | 18 |
| 2004 | 22 | 49 |
| 2005 | 20 | 44 |
| 2006 | 23 | 99 |
| 2007 | 40 | 105 |
| 2008 | 55 | 136 |
| 2009 | 62 | 183 |
| 2010 | 125 | 171 |
| 2011 | 110 | 172 |
| 2012 | 155 | 126 |
| 2013 | 168 | 166 |
| 2014 | 205 | 142 |
| 2015 | 200 | 228 |
| 2016 | 215 | 202 |
| 2017 | 186 | 204 |
| 2018 | 203 | 203 |
| 2019 | 219 | 178 |
| 2020 | 170 | 145 |
| 2021 | 112 | 96 |
| 2022 | 89 | 116 |
| 2023 | 87 | 105 |
| 2024 | 101 | 125 |
| 2025 | 83 | 172 |
| 2026 | 71 | 83 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 15/043With means for controlling illumination or exposure2,026
- G03G 15/04036Details of illuminating systems1,724
- G03G 15/041With variable magnification470
- G03G 15/0409Details of projection optics244
- G03G 15/045With means for charging or discharging distinct portions of the charge pattern239
- G03G 15/04018Image composition167
- G03G 15/04027And forming half-tone image97
- G03G 15/04009By forming an intermediate temporary image projected one or more times16
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