D06L 4/621
With anionic brighteners
Official title: with anionic brighteners
D06L4/621 (With anionic brighteners) appears on 47 US grants and 18 published applications in this corpus.
Search patents in D06L- Granted patents
- 47
- Published applications
- 18
- Assignees
- 17
- Inventors
- 92
- Latest grant
- 8 Nov 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 1 |
| 2003 | 0 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 2 |
| 2007 | 2 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Stilbene optical brighteners8 Nov 2016US 9,487,503 B23V Sigma S.p.A.
- Fluorescent whitening agent compositions30 Sep 2014US 8,845,761 B13V Sigma S.p.A.
- Storage-stable fluorescent whitener formulations24 Apr 2012US 8,163,688 B2BASF SE
- Triazinylaminostilbene disulphonic acid mixtures8 Sep 2009US 7,585,333 B2Ciba Specialty Chemicals Corporation
- Triazinylaminostilbene disulphonic acid mixtures18 Sep 2007US 7,270,771 B2Ciba Specialty Chemicals Corporation
- Bleaching and shive reduction process for non-wood fibers29 Oct 2020US 2020/0340172 A1Crailar Technologies, Inc.
- Stilbene optical brighteners20 Nov 2014US 2014/0339462 A13V Sigma S.p.A.
- Fluorescent whitening agent compositions11 Sep 2014US 2014/0250605 A13V Sigma S.p.A.
- Anionic dye polymers19 Apr 2012US 2012/0090102 A1
- Triphenodioxazine dyes5 Aug 2010US 2010/0197555 A1
Most cited
By later US patents
- Triazinylaminostilbene derivative as fluorescent whitening agents40US 6,723,846 B1Ciba Specialty Chemicals Corporation · 2004
- Aqueous storage-stable whitener formulation with an anionic polysaccharide stabilizer25US 5,076,968 ACiba-Geigy Corporation · 1991
- Fluorescent whitening agent formulation20US 5,830,241 ACiba Specialty Chemicals Corporation · 1998
- Storage-stable formulation of fluorescent whitening mixtures19US 5,518,657 ACiba-Geigy Corporation · 1996
- Optical brightening agents15US 5,873,913 AClariant Finance (BVI) Limited · 1999