D21H 17/21
Of natural origin
Official title: of natural origin; Derivatives thereof
D21H17/21 (Of natural origin) appears on 1,250 US grants and 1,340 published applications in this corpus.
Search patents in D21H- Granted patents
- 1,250
- Published applications
- 1,340
- Assignees
- 576
- Inventors
- 2,938
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 5 | 0 |
| 1978 | 12 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 7 | 0 |
| 1987 | 10 | 0 |
| 1988 | 17 | 0 |
| 1989 | 15 | 0 |
| 1990 | 19 | 0 |
| 1991 | 14 | 0 |
| 1992 | 16 | 0 |
| 1993 | 10 | 0 |
| 1994 | 18 | 0 |
| 1995 | 4 | 0 |
| 1996 | 23 | 0 |
| 1997 | 30 | 0 |
| 1998 | 27 | 0 |
| 1999 | 33 | 0 |
| 2000 | 41 | 0 |
| 2001 | 45 | 11 |
| 2002 | 38 | 39 |
| 2003 | 33 | 42 |
| 2004 | 25 | 39 |
| 2005 | 17 | 34 |
| 2006 | 17 | 41 |
| 2007 | 12 | 34 |
| 2008 | 8 | 37 |
| 2009 | 12 | 40 |
| 2010 | 24 | 59 |
| 2011 | 20 | 35 |
| 2012 | 35 | 39 |
| 2013 | 35 | 41 |
| 2014 | 38 | 52 |
| 2015 | 36 | 87 |
| 2016 | 55 | 61 |
| 2017 | 45 | 57 |
| 2018 | 50 | 52 |
| 2019 | 36 | 58 |
| 2020 | 56 | 67 |
| 2021 | 49 | 74 |
| 2022 | 48 | 66 |
| 2023 | 44 | 77 |
| 2024 | 43 | 84 |
| 2025 | 39 | 60 |
| 2026 | 38 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Low cellulosic non-wood fiber products and methods of making the same6 Oct 2026US 12,753,553 B2Archer Daniels Midland Company
- 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
- Foam-assisted application of uncooked starch and dry strength agents to paper products8 Sep 2026US 12,729,486 B2Solenis Technologies, L.P.
- Oil Resistant Sheet Product8 Oct 2026US 2026/0308851 A1SWM Holdco Luxembourg
- A method for producing a fiber based article1 Oct 2026US 2026/0297852 A1Kemira Oyj
- Ceiling basemat water reduction through strategic use of pressing and vacuuming17 Sep 2026US 2026/0275636 A1USG Interiors, Inc.
- Treatment system and method for manufacture of paper, board or the like27 Aug 2026US 2026/0250909 A1Kemira Oyj
- Dual emulsification of alkenyl succinic anhydride to improve sizing performance and stability20 Aug 2026US 2026/0243024 A1Kemira Oyj
Most cited
By later US patents
- Water absorbing agent285US 4,734,478 ANippon Shokubai Kagaku Kogyo Co., Ltd. · 1988
- Papermaking and products made thereby159US 4,388,150 AEKA Aktiebolag · 1983
- Multi-elevational tissue paper containing selectively disposed chemical papermaking additive159US 5,840,403 AThe Procter & Gamble Company · 1998
- Water-disintegrable cleaning sheet156US 5,281,306 AKao Corporation · 1994
- Multiply tissue paper156US 6,420,013 B1The Procter & Gamble Company · 2002