D06L 4/693
Blueing with mixtures of dyes
Official title: Blueing with mixtures of dyes; Blueing with mixtures of dyes and optical brighteners
D06L4/693 (Blueing with mixtures of dyes) appears on 4 US grants and 2 published applications in this corpus.
Search patents in D06L- Granted patents
- 4
- Published applications
- 2
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 8 Dec 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Surface treatment compositions comprising photochromic dyes8 Dec 2015US 9,206,382 B2The Procter & Gamble Company
- Formulations of fluorescent whitening agents in dispersed form25 Mar 2014US 8,679,199 B2Hunstman International LLC
- Complexes of ultraviolet absorbers and quaternary ammonium compounds which are substantially free from unwanted salts4 Apr 2000US 6,046,330 A
- Process for enhancing the whiteness, brightness and chormaticity of paper making fibres9 Jan 1996US 5,482,514 ACiba-Geigy Corporation
Most cited
By later US patents
- Process for enhancing the whiteness, brightness and chormaticity of paper making fibres16US 5,482,514 ACiba-Geigy Corporation · 1996
- Surface treatment compositions comprising photochromic dyes12US 9,206,382 B2The Procter & Gamble Company · 2015
- Complexes of ultraviolet absorbers and quaternary ammonium compounds which are substantially free from unwanted salts7US 6,046,330 A2000