D06L 4/671
Optical brightening assistants
Official title: Optical brightening assistants, e.g. enhancers or boosters
D06L4/671 (Optical brightening assistants) appears on 25 US grants and 9 published applications in this corpus.
Search patents in D06L- Granted patents
- 25
- Published applications
- 9
- Assignees
- 15
- Inventors
- 75
- Latest grant
- 27 Jan 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Fluorescent whitening agent aqueous solutions27 Jan 2015US 8,940,058 B23V Sigma S.p.A.
- Formulations of fluorescent whitening agents in dispersed form25 Mar 2014US 8,679,199 B2Hunstman International LLC
- Use of a copolymer having at least one grafted alkoxy or hydroxy polyalkylene glycol function as an agent for improving optical brightening activation, and products obtained10 Aug 2010US 7,772,351 B2Coatex
- Aqueous compositions of UV-active agents, their production and use24 Aug 2004US 6,780,827 B1Clariant Finance (BVI) Limited
- Aqueous compositions of a UV-active agents, their production and use20 Apr 2004US 6,723,256 B1Clariant Finance (BVI) Limited
- Method of Binding Mineral Particles to Fibers19 Jan 2023US 2023/0013690 A1
- Method of Binding Mineral Particles to Fibers1 Apr 2021US 2021/0095419 A1
- Bleaching and shive reduction process for non-wood fibers29 Oct 2020US 2020/0340172 A1Crailar Technologies, Inc.
- Fluorescent whitening agent aqueous solutions24 Jul 2014US 2014/0203212 A13V Sigma S.p.A.
- Formulations of Fluorescent Whitening Agents in Dispersed Form31 Oct 2013US 2013/0283547 A1Huntsman International LLC
Most cited
By later US patents
- Method for stabilizing brightened modacrylic fibers44US 4,126,412 AMonsanto Company · 1978
- Wetting and anti-foaming agents, and process for removing foam from aqueous systems25US 4,071,468 ACiba-Geigy Corporation · 1978
- Process for the dyeing of fibre material21US 4,270,236 ACiba-Geigy Corporation · 1981
- Process for removing foam from aqueous systems and composition useful therein20US 4,092,266 ACiba-Geigy Corporation · 1978
- Use of heterocyclic compounds as activators for inorganic peroxy compounds13US 5,972,237 ABASF SE · 1999