D21C 9/166
With peracids
Official title: {with peracids}
D21C9/166 (With peracids) appears on 45 US grants and 36 published applications in this corpus.
Search patents in D21C- Granted patents
- 45
- Published applications
- 36
- Assignees
- 32
- Inventors
- 113
- Latest grant
- 4 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 4 | 3 |
| 2014 | 4 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 2 |
| 2017 | 1 | 3 |
| 2018 | 2 | 0 |
| 2019 | 0 | 3 |
| 2020 | 2 | 2 |
| 2021 | 3 | 4 |
| 2022 | 2 | 2 |
| 2023 | 4 | 1 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods of microbial control4 Feb 2025US 12,215,460 B2Clean Chemistry, Inc.
- Bleaching trichomes to remove proteins4 Feb 2025US 12,215,461 B2The Procter & Gamble Company
- Bleaching trichomes to remove proteins19 Dec 2023US 11,846,068 B2The Procter & Gamble Company
- High efficiency fiber bleaching process12 Dec 2023US 11,840,805 B2GPCP IP Holdings LLC
- Methods of pulp fiber treatment24 Oct 2023US 11,795,615 B2Clean Chemistry, Inc.
- Bleaching Trichomes to Remove Proteins10 Apr 2025US 2025/0116064 A1The Procter & Gamble Company
- Bleaching Trichomes to Remove Proteins15 Feb 2024US 2024/0052567 A1The Procter & Gamble Company
- High Efficiency Fiber Bleaching Process1 Jun 2023US 2023/0167604 A1GPCP IP Holdings LLC
- Bleaching Trichomes to Remove Proteins3 Nov 2022US 2022/0349123 A1The Procter & Gamble Company
- Methods of microbial control18 Aug 2022US 2022/0259803 A1Clean Chemistry, Inc.
Most cited
By later US patents
- Method of producing pulp using single-stage cooking with formic acid and washing with performic acid56US 6,156,156 AChempolis Oy · 2000
- A process for delignifying pulp with organic peroxyacid in the presence of phosphonic acids and their salts50US 5,552,018 ASolvay Interox (Societe Anonyme) · 1996
- Method for bleaching paper pulp with organic peracids followed by peroxide and sodium hydroxide37US 6,866,749 B2Compagnie Industrielle de la Matiere Vegetale · 2005
- Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof32US 6,007,678 AEka Nobel AB · 1999
- Peroxide bleach sequence including an acidic bleach stage and including a wash stage32US 6,605,181 B1Kvaerner Pulping Aktiebolag · 2003