D21H 17/29
Cationic
Official title: cationic
D21H17/29 (Cationic) appears on 287 US grants and 213 published applications in this corpus.
Search patents in D21H- Granted patents
- 287
- Published applications
- 213
- Assignees
- 128
- Inventors
- 663
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 10 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 13 | 0 |
| 1998 | 8 | 0 |
| 1999 | 13 | 0 |
| 2000 | 20 | 0 |
| 2001 | 15 | 3 |
| 2002 | 14 | 11 |
| 2003 | 11 | 20 |
| 2004 | 7 | 11 |
| 2005 | 7 | 7 |
| 2006 | 5 | 11 |
| 2007 | 5 | 7 |
| 2008 | 0 | 4 |
| 2009 | 1 | 8 |
| 2010 | 3 | 10 |
| 2011 | 3 | 3 |
| 2012 | 5 | 4 |
| 2013 | 5 | 6 |
| 2014 | 12 | 4 |
| 2015 | 5 | 15 |
| 2016 | 1 | 7 |
| 2017 | 12 | 9 |
| 2018 | 7 | 7 |
| 2019 | 6 | 9 |
| 2020 | 6 | 7 |
| 2021 | 4 | 11 |
| 2022 | 8 | 9 |
| 2023 | 3 | 9 |
| 2024 | 7 | 9 |
| 2025 | 7 | 6 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low cellulosic non-wood fiber products and methods of making the same6 Oct 2026US 12,753,553 B2Archer Daniels Midland Company
- Water resistant and repulpable compositions28 Jul 2026US 12,692,662 B2Neenah, Inc.
- Treatment system for manufacture of paper, board or the like21 Apr 2026US 12,606,959 B2Kemira Oyj
- Hemp paper packaging material for foodstuff17 Feb 2026US 12,553,184 B2Wm. Wrigley Jr. Company
- Packaging paper27 Jan 2026US 12,534,856 B2Mondi AG
- Dual emulsification of alkenyl succinic anhydride to improve sizing performance and stability20 Aug 2026US 2026/0243024 A1Kemira Oyj
- Method30 Jul 2026US 2026/0218459 A1
- Strength composition and method for dissolving the strength composition23 Jul 2026US 2026/0210056 A1Kemira Oyj
- Novel wheat milling derivative products, methods of making and uses of the same16 Jul 2026US 2026/0201641 A1Archer Daniels Midland Company
- Production of hydrophobic paper9 Jul 2026US 2026/0193844 A1Sca Forest Products AB
Most cited
By later US patents
- Papermaking and products made thereby159US 4,388,150 AEKA Aktiebolag · 1983
- Production of paper and paper board121US 4,913,775 AAllied Colloids Limited · 1990
- Soft absorbent tissue paper with high temporary wet strength120US 5,217,576 A1993
- Process for creping tissue paper117US 5,865,950 AThe Procter & Gamble Company · 1999
- Silica sols having high surface area109US 5,368,833 AEka Nobel AB · 1994