D21H 21/22
Agents rendering paper porous, absorbent or bulky
D21H21/22 (Agents rendering paper porous, absorbent or bulky) appears on 595 US grants and 519 published applications in this corpus.
Search patents in D21H- Granted patents
- 595
- Published applications
- 519
- Assignees
- 201
- Inventors
- 1,204
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 18 | 0 |
| 1996 | 22 | 0 |
| 1997 | 20 | 0 |
| 1998 | 14 | 0 |
| 1999 | 24 | 0 |
| 2000 | 36 | 0 |
| 2001 | 35 | 5 |
| 2002 | 28 | 19 |
| 2003 | 27 | 19 |
| 2004 | 23 | 31 |
| 2005 | 15 | 24 |
| 2006 | 6 | 29 |
| 2007 | 16 | 23 |
| 2008 | 9 | 23 |
| 2009 | 8 | 16 |
| 2010 | 18 | 25 |
| 2011 | 23 | 16 |
| 2012 | 18 | 14 |
| 2013 | 16 | 22 |
| 2014 | 16 | 15 |
| 2015 | 7 | 19 |
| 2016 | 9 | 18 |
| 2017 | 5 | 15 |
| 2018 | 3 | 23 |
| 2019 | 20 | 26 |
| 2020 | 24 | 29 |
| 2021 | 19 | 27 |
| 2022 | 20 | 21 |
| 2023 | 19 | 15 |
| 2024 | 21 | 20 |
| 2025 | 15 | 11 |
| 2026 | 2 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Composition for improving softness of tissue and/or towel products12 May 2026US 12,624,503 B2Solenis Technologies, L.P.
- Wet laid paper and paperboard products with high wet strength and method of making the same31 Mar 2026US 12,590,413 B2First Quality Tissue, LLC
- Layered fibrous structures25 Nov 2025US 12,480,258 B2The Procter & Gamble Company
- Soft, low lint, through air dried roll bath tissue4 Nov 2025US 12,460,354 B2First Quality Tissue, LLC
- Paper enhancing compositions, uses thereof and enhanced paper23 Sep 2025US 12,421,665 B2ITI Technologies, Inc.
- Packing material and manufacturing method of packing material13 Aug 2026US 2026/0234872 A1Sony Group Corporation
- Paper treatment agent, paper using same, and method for improving texture of paper13 Aug 2026US 2026/0234874 A1Miyoshi Oil & Fat Co., Ltd.
- Method for producing a solid cellulose foam, a solid cellulose foam, and use thereof6 Aug 2026US 2026/0226684 A1Stora Enso OYJ
- Wet laid paper and paperboard products with high wet strength and method of making the same16 Jul 2026US 2026/0201642 A1First Quality Tissue, LLC
- Soft treated tissue having improved hand protection9 Jul 2026US 2026/0193847 A1Kimberly-Clark Worldwide, Inc.
Most cited
By later US patents
- 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
- Dual-zoned absorbent webs287US 5,990,377 AKimberly-Clark Worldwide, Inc. · 1999
- Dual-zoned absorbent webs269US 6,395,957 B1Kimberly-Clark Worldwide, Inc. · 2002
- Diaper having a lotioned topsheet242US 6,118,041 AThe Procter & Gamble Company · 2000