G03G 15/00
Apparatus for electrographic processes using a charge pattern
Official title: Apparatus for electrographic processes using a charge pattern (G03G16/00, G03G17/00 take precedence)
G03G15/00 (Apparatus for electrographic processes using a charge pattern) appears on 63,430 US grants and 51,865 published applications in this corpus.
Search patents in G03G- Granted patents
- 63,430
- Published applications
- 51,865
- Assignees
- 1,869
- Inventors
- 38,656
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 483 | 0 |
| 1977 | 403 | 0 |
| 1978 | 372 | 0 |
| 1979 | 289 | 0 |
| 1980 | 323 | 0 |
| 1981 | 387 | 0 |
| 1982 | 346 | 0 |
| 1983 | 358 | 0 |
| 1984 | 379 | 0 |
| 1985 | 456 | 0 |
| 1986 | 486 | 0 |
| 1987 | 549 | 0 |
| 1988 | 555 | 0 |
| 1989 | 725 | 0 |
| 1990 | 819 | 0 |
| 1991 | 912 | 0 |
| 1992 | 982 | 0 |
| 1993 | 941 | 0 |
| 1994 | 871 | 0 |
| 1995 | 782 | 0 |
| 1996 | 1068 | 0 |
| 1997 | 873 | 0 |
| 1998 | 1321 | 0 |
| 1999 | 1266 | 0 |
| 2000 | 1178 | 0 |
| 2001 | 1112 | 386 |
| 2002 | 1091 | 1091 |
| 2003 | 1066 | 1250 |
| 2004 | 1056 | 1534 |
| 2005 | 999 | 1843 |
| 2006 | 1285 | 2241 |
| 2007 | 1352 | 2496 |
| 2008 | 1419 | 2566 |
| 2009 | 1475 | 2787 |
| 2010 | 2065 | 2496 |
| 2011 | 2264 | 2859 |
| 2012 | 2524 | 2567 |
| 2013 | 2730 | 2532 |
| 2014 | 3100 | 2408 |
| 2015 | 3192 | 2521 |
| 2016 | 2853 | 2311 |
| 2017 | 2104 | 2478 |
| 2018 | 2263 | 2297 |
| 2019 | 2360 | 1997 |
| 2020 | 2043 | 2040 |
| 2021 | 1677 | 1765 |
| 2022 | 1571 | 1691 |
| 2023 | 1444 | 1574 |
| 2024 | 1329 | 1435 |
| 2025 | 1136 | 1551 |
| 2026 | 796 | 1149 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03G 15/06Apparatus for electrographic processes using a charge pattern: for developing16,900
- G03G 15/50Machine control of apparatus for electrographic processes using a charge pattern11,769
- G03G 15/20Apparatus for electrographic processes using a charge pattern: for fixing11,282
- G03G 15/65Apparatus which relate to the handling of copy material10,340
- G03G 15/14Apparatus for electrographic processes using a charge pattern: for transferring a pattern7,081
- G03G 15/01Apparatus for electrographic processes using a charge pattern: for producing multicoloured copies6,223
- G03G 15/22Involving the combination of more than one step according to groups g03g13/024,555
- G03G 15/04Apparatus for electrographic processes using a charge pattern: for exposing, i.e. imagewise4,288
All 18 subgroupsShow fewer
- G03G 15/55Self-diagnostics3,422
- G03G 15/02Apparatus for electrographic processes using a charge pattern: for laying down a3,358
- G03G 15/75Details relating to xerographic drum, band or plate2,750
- G03G 15/60Apparatus which relate to the handling of originals1,704
- G03G 15/80Details relating to power supplies, circuits boards, electrical connections1,679
- G03G 15/70Detecting malfunctions relating to paper handling569
- G03G 15/36Editing, i.e. producing a composite image by copying one or more original238
- G03G 15/05Apparatus for electrographic processes using a charge pattern: for imagewise charging162
- G03G 15/054Apparatus for electrographic processes using a charge pattern: using x-rays105
- G03G 15/056Apparatus for electrographic processes using a charge pattern: using internal polarisation14
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Most cited
By later US patents
- Image read device and copier1,024US 8,599,450 B2Ricoh Company, Ltd. · 2013
- Electronic printer having wireless power and communications connections to accessory units794US 6,055,062 AHewlett-Packard Company · 2000
- Variable thickness set compensation for stapler637US 4,421,264 AInternational Business Machines Corporation · 1983
- Electrophoretic displays using nanoparticles501US 6,323,989 B1E Ink Corporation · 2001
- Distributed printing448US 5,287,194 AXerox Corporation · 1994