G03G 5/0611
Squaric acid
Official title: {Squaric acid}
G03G5/0611 (Squaric acid) appears on 80 US grants and 5 published applications in this corpus.
Search patents in G03G- Granted patents
- 80
- Published applications
- 5
- Assignees
- 19
- Inventors
- 123
- Latest grant
- 3 Oct 2017
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 10 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus incorporating an improved undercoat layer3 Oct 2017US 9,778,582 B2Canon Kabushiki Kaisha
- Electrophotographic photoconductor2 Oct 2012US 8,278,016 B2Ricoh Company, Ltd.
- Solution-coatable, three-component thin film design for organic optoelectronic devices6 Jun 2006US 7,056,632 B2Xerox Corporatioin
- Hydrazone-based charge transport compounds28 Dec 2004US 6,835,514 B2Samsung Electronics Co., Ltd.
- Squarylium compounds, and processes and intermediates for the synthesis of these compounds19 Nov 2002US 6,482,950 B1Polaroid Corporation
- Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus3 Dec 2015US 2015/0346620 A1Canon Kabushiki Kaisha
- Recording medium and image forming apparatus21 Jul 2011US 2011/0177263 A1Fuji Xerox Co., Ltd.
- Electrophotographic photoconductor17 Dec 2009US 2009/0311616 A1Ricoh Company, Ltd.
- Solution-coatable, three-component thin film design for organic optoelectronic devices22 Jul 2004US 2004/0142257 A1Xerox Corporation
- Hydrazone-based charge transport compounds20 Nov 2003US 2003/0215728 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Squarylium dye and diane blue dye charge generating layer mixture for electrophotographic light sensitive elements and processes64US 4,353,971 APitney Bowes Inc. · 1982
- Electrophotographic process utilizing an azulenium salt-containing photosensitive member57US 4,565,761 ACanon Kabushiki Kaisha · 1986
- Squarylium charge generating dye and electrophotographic photoconductor46US 4,677,045 AInternational Business Machines Corporation · 1987
- Method of making electrophotographic imaging element45US 4,123,270 AInternational Business Machines Corporation · 1978
- Photoconductive imaging members with unsymmetrical squaraine compounds containing an hydroxyl group43US 4,624,904 AXerox Corporation · 1986