G03C 1/732
Leuco dyes
Official title: {Leuco dyes}
G03C1/732 (Leuco dyes) appears on 88 US grants and 47 published applications in this corpus.
Search patents in G03C- Granted patents
- 88
- Published applications
- 47
- Assignees
- 32
- Inventors
- 154
- Latest grant
- 21 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 2 | 11 |
| 2006 | 4 | 5 |
| 2007 | 2 | 6 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 6 | 4 |
| 2012 | 0 | 3 |
| 2013 | 5 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 3 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Inkjet and direct thermal printable media21 Mar 2023US 11,609,489 B2CCL Label, Inc.
- Three-dimensional structure and method of manufacturing three-dimensional structure6 Dec 2022US 11,518,101 B2Sony Corporation
- Photocatalytic color switching of redox imaging nanomaterials of rewritable media14 Jan 2020US 10,534,254 B2The Regents of the University of California
- Imaging particulates, paper and process, and imaging of paper using dual wavelength light17 Mar 2015US 8,980,523 B2International Paper Company
- Multi-layer articles capable of forming color images and method of forming color images10 Mar 2015US 8,975,011 B23M Innovative Properties Company
- Three-dimensional structure and method of manufacturing three-dimensional structure2 Jul 2020US 2020/0207020 A1Sony Corporation
- Three-dimensional structure and method of manufacturing three-dimensional structure25 Jun 2020US 2020/0198225 A1Sony Corporation
- Inkjet and direct thermal printable media5 Mar 2020US 2020/0073223 A1CCL Label, Inc.
- Photocatalytic color switching of redox imaging nanomaterials of rewritable media2 Nov 2017US 2017/0315436 A1The Regents of the University of California
- Infrared dyes for laser marking17 Sep 2015US 2015/0261080 A1Agfa-Gevaert
Most cited
By later US patents
- Phototropic photosensitive compositions containing fluoran colorformer83US 4,343,885 ADynachem Corporation · 1982
- Photoimaging composition containing admixture of leuco dye and 2,4,5-triphenylimidazolyl dimer83US 4,622,286 AE. I. Du Pont de Nemours and Company · 1986
- Light sensitive, thermally developable imaging system77US 4,370,401 AMinnesota Mining and Manufacturing Company · 1983
- Dye-forming compositions76US 4,425,424 AEastman Kodak Company · 1984
- Thermally developable light-sensitive layers containing photobleachable sensitizers76US 5,153,104 AMinnesota Mining and Manufacturing Company · 1992