D21C 9/101
In solvent medium
Official title: {in solvent medium}
D21C9/101 (In solvent medium) appears on 4 US grants and 2 published applications in this corpus.
Search patents in D21C- Granted patents
- 4
- Published applications
- 2
- Assignees
- 4
- Inventors
- 14
- Latest grant
- 15 Mar 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for bleaching paper pulp with organic peracids followed by peroxide and sodium hydroxide15 Mar 2005US 6,866,749 B2Compagnie Industrielle de la Matiere Vegetale
- Ozone bleaching with an organic solvent and mineral acid11 Nov 1997US 5,685,953 AMacMillan Bloedel Limited
- Oxygen bleaching process for cellulocis pulps with a polyhydric alcohol cellulose protector11 Mar 1997US 5,609,723 AMacMillan Bloedel Limited
- Ozone dioxane bleaching of chemical pulps11 Oct 1994US 5,354,423 AUniversity of New Brunswick
Most cited
By later US patents
- Method for bleaching paper pulp with organic peracids followed by peroxide and sodium hydroxide37US 6,866,749 B2Compagnie Industrielle de la Matiere Vegetale · 2005
- Ozone bleaching with an organic solvent and mineral acid2US 5,685,953 AMacMillan Bloedel Limited · 1997
- Ozone dioxane bleaching of chemical pulps1US 5,354,423 AUniversity of New Brunswick · 1994
- Oxygen bleaching process for cellulocis pulps with a polyhydric alcohol cellulose protector1US 5,609,723 AMacMillan Bloedel Limited · 1997