D06L 4/686
Fugitive optical brightening
Official title: Fugitive optical brightening; Discharge of optical brighteners in discharge paste; Blueing; Differential optical brightening
D06L4/686 (Fugitive optical brightening) appears on 27 US grants and 17 published applications in this corpus.
Search patents in D06L- Granted patents
- 27
- Published applications
- 17
- Assignees
- 11
- Inventors
- 45
- Latest grant
- 16 Feb 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 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 | 3 |
| 2009 | 3 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 5 |
| 2019 | 2 | 0 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Leuco polymers as bluing agents in laundry care compositions16 Feb 2021US 10,920,083 B2Milliken & Company
- Leuco colorants as bluing agents in laundry care compositions1 Dec 2020US 10,851,329 B2Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions12 May 2020US 10,647,854 B2Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions10 Dec 2019US 10,501,633 B2Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions13 Aug 2019US 10,377,976 B2The Procter & Gamble Company
- Leuco colorants as bluing agents in laundry care compositions31 May 2018US 2018/0148672 A1Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions10 May 2018US 2018/0127589 A1Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions3 May 2018US 2018/0118948 A1Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions3 May 2018US 2018/0118949 A1Milliken & Company
- Leuco polymers as bluing agents in laundry care compositions3 May 2018US 2018/0119060 A1The Procter & Gamble Company
Most cited
By later US patents
- Process for quenching or suppressing the fluorescence of substrates treated with fluorescent whitening agents63US 4,950,304 ACiba-Geigy Corporation · 1990
- Fabric conditioning compositions containing phthalocyanine substituted with quaternary ammonium group-containing sulphonamide photoactivator22US 4,368,053 ACiba-Geigy Corporation · 1983
- Unsubstituted and polymeric lactone colorants for coloring consumer products17US 7,544,216 B2Milliken & Company · 2009
- Unsubstituted and polymeric fluoran colorants for coloring consumer products17US 7,637,963 B2Milliken & Company · 2009
- Process for enhancing the whiteness, brightness and chormaticity of paper making fibres16US 5,482,514 ACiba-Geigy Corporation · 1996