D21H 21/08
Dispersing agents for fibres
D21H21/08 (Dispersing agents for fibres) appears on 37 US grants and 43 published applications in this corpus.
Search patents in D21H- Granted patents
- 37
- Published applications
- 43
- Assignees
- 41
- Inventors
- 113
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 3 |
| 2015 | 2 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 0 | 7 |
| 2020 | 3 | 1 |
| 2021 | 3 | 2 |
| 2022 | 3 | 4 |
| 2023 | 3 | 8 |
| 2024 | 3 | 1 |
| 2025 | 4 | 4 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dispersion of cellulose fibers and method of producing the same17 Feb 2026US 12,553,187 B2Metsa Fibre Oy
- Articles of manufacture comprising nanocellulose elements10 Feb 2026US 12,545,864 B2Soane Materials LLC
- Articles of manufacture comprising nanocellulose elements10 Feb 2026US 12,545,866 B2Soane Materials LLC
- Treated Kraft pulp compositions and methods of making the same19 Aug 2025US 12,392,086 B2International Paper Company
- Aqueous slurry for a coating colour composition for paper, board or the like19 Aug 2025US 12,392,088 B2Kemira Oyj
- Starch-cellulose composite material12 Jun 2025US 2025/0188679 A1Pratt Corrugated Holdings, Inc.
- Articles of Manufacture Comprising Nanocellulose Elements20 Mar 2025US 2025/0092338 A1Soane Materials LLC
- Articles of Manufacture Comprising Nanocellulose Elements6 Mar 2025US 2025/0075154 A1Soane Materials LLC
- Articles of Manufacture Comprising Nanocellulose Elements27 Feb 2025US 2025/0066699 A1Soane Materials LLC
- A Method For Producing Cationic Saccharides8 Aug 2024US 2024/0262855 A1Kemira Oyj
Most cited
By later US patents
- Process for polymerization of itaconic acid30US 5,223,592 ARohm and Haas Company · 1993
- Method for modifying papermaking sludge and products made from modified papermaking sludge25US 5,795,377 AKimberly-Clark Worldwide, Inc. · 1998
- Multifunctional maleate polymers15US 5,925,610 ANational Starch and Chemical Investment Holding Corporation · 1999
- Starch-cellulose composite material13US 12,270,153 B2Pratt Corrugated Holdings, Inc. · 2025
- Reinforced thermoplastics sheet and its manufacturing process13US 5,008,306 AExxon Chemical Patents Inc. · 1991