D21H 17/00
Non-fibrous material added to the pulp, characterised by its constitution
Official title: Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H17/00 (Non-fibrous material added to the pulp, characterised by its constitution) appears on 5,533 US grants and 4,782 published applications in this corpus.
Search patents in D21H- Granted patents
- 5,533
- Published applications
- 4,782
- Assignees
- 1,884
- Inventors
- 10,320
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 97 | 0 |
| 1977 | 76 | 0 |
| 1978 | 78 | 0 |
| 1979 | 55 | 0 |
| 1980 | 73 | 0 |
| 1981 | 83 | 0 |
| 1982 | 57 | 0 |
| 1983 | 78 | 0 |
| 1984 | 71 | 0 |
| 1985 | 86 | 0 |
| 1986 | 82 | 0 |
| 1987 | 58 | 0 |
| 1988 | 77 | 0 |
| 1989 | 91 | 0 |
| 1990 | 90 | 0 |
| 1991 | 84 | 0 |
| 1992 | 113 | 0 |
| 1993 | 105 | 0 |
| 1994 | 88 | 0 |
| 1995 | 82 | 0 |
| 1996 | 110 | 0 |
| 1997 | 131 | 0 |
| 1998 | 132 | 0 |
| 1999 | 133 | 0 |
| 2000 | 140 | 0 |
| 2001 | 173 | 34 |
| 2002 | 142 | 127 |
| 2003 | 111 | 187 |
| 2004 | 120 | 190 |
| 2005 | 71 | 166 |
| 2006 | 64 | 186 |
| 2007 | 83 | 158 |
| 2008 | 46 | 178 |
| 2009 | 64 | 158 |
| 2010 | 114 | 206 |
| 2011 | 118 | 175 |
| 2012 | 135 | 173 |
| 2013 | 148 | 218 |
| 2014 | 182 | 196 |
| 2015 | 138 | 311 |
| 2016 | 156 | 204 |
| 2017 | 168 | 202 |
| 2018 | 164 | 186 |
| 2019 | 148 | 193 |
| 2020 | 170 | 206 |
| 2021 | 149 | 211 |
| 2022 | 145 | 207 |
| 2023 | 122 | 202 |
| 2024 | 132 | 213 |
| 2025 | 114 | 156 |
| 2026 | 86 | 139 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D21H 17/20Macromolecular organic compounds3,624
- D21H 17/63Inorganic compounds1,686
- D21H 17/03Non-macromolecular organic compounds1,264
- D21H 17/71Mixtures of material451
- D21H 17/005Microorganisms or enzymes144
- D21H 17/62Rosin122
- D21H 17/60Waxes78
- D21H 17/02Material of vegetable origin75
All 10 subgroupsShow fewer
Recent patents
- Low cellulosic non-wood fiber products and methods of making the same6 Oct 2026US 12,753,553 B2Archer Daniels Midland Company
- Method of preparing aldehyde-functionalized polymers29 Sep 2026US 12,747,307 B2Ecolab USA Inc.
- Moisture/oil resistant composite materials29 Sep 2026US 12,747,536 B2World Centric
- Polymer compositions and coatings22 Sep 2026US 12,742,090 B2The Penn State Research Foundation
- Barrier coating for paper and paperboard22 Sep 2026US 12,742,291 B2Stora Enso OYJ
- Paper substrate for fibrous casing substrate8 Oct 2026US 2026/0308848 A1Nippon Paper Papylia Co., Ltd.
- Use of Polyurethane Elastomers Based on or Use of Kit-Of-Parts Comprising MDI-Polyadipate Prepolymers and Polyamine Chain-Extenders in Pulp and Paper Applications, Preferably in the Manufacture of Die Cutting Pads, Anvil Covers, Rollers and Zero Crush Wheels8 Oct 2026US 2026/0308850 A1Covestro Deutschland AG
- Oil Resistant Sheet Product8 Oct 2026US 2026/0308851 A1SWM Holdco Luxembourg
- Method for manufacturing paper-making filler using mixed solution of organic fiber and inorganic compound and use thereof1 Oct 2026US 2026/0297850 A1MarinePad Co., Ltd.
- Polyimide fibre paper1 Oct 2026US 2026/0297851 A1Dupont Electronics, Inc.
Most cited
By later US patents
- End use applications of biodegradable polymers1,525US 5,444,113 AEcopol, LLC · 1995
- Diaper having a lotioned topsheet815US 5,643,588 AThe Procter & Gamble Company · 1997
- Absorbent article having a lotioned topsheet509US 5,968,025 AThe Procter & Gamble Company · 1999
- Blends of polyactic acid312US 5,216,050 ABioPak Technology, Ltd. · 1993
- Water absorbing agent285US 4,734,478 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1988