A61L 15/60
Liquid-swellable gel-forming materials
Official title: Liquid-swellable gel-forming materials, e.g. super-absorbents
A61L15/60 (Liquid-swellable gel-forming materials) appears on 2,094 US grants and 2,141 published applications in this corpus.
Search patents in A61L- Granted patents
- 2,094
- Published applications
- 2,141
- Assignees
- 766
- Inventors
- 3,877
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 12 | 0 |
| 1978 | 15 | 0 |
| 1979 | 6 | 0 |
| 1980 | 14 | 0 |
| 1981 | 15 | 0 |
| 1982 | 18 | 0 |
| 1983 | 15 | 0 |
| 1984 | 20 | 0 |
| 1985 | 18 | 0 |
| 1986 | 14 | 0 |
| 1987 | 12 | 0 |
| 1988 | 24 | 0 |
| 1989 | 32 | 0 |
| 1990 | 29 | 0 |
| 1991 | 24 | 0 |
| 1992 | 38 | 0 |
| 1993 | 32 | 0 |
| 1994 | 34 | 0 |
| 1995 | 49 | 0 |
| 1996 | 38 | 0 |
| 1997 | 55 | 0 |
| 1998 | 59 | 0 |
| 1999 | 33 | 0 |
| 2000 | 46 | 0 |
| 2001 | 58 | 21 |
| 2002 | 54 | 41 |
| 2003 | 50 | 89 |
| 2004 | 36 | 94 |
| 2005 | 36 | 89 |
| 2006 | 29 | 67 |
| 2007 | 40 | 68 |
| 2008 | 30 | 76 |
| 2009 | 30 | 79 |
| 2010 | 44 | 88 |
| 2011 | 39 | 79 |
| 2012 | 53 | 86 |
| 2013 | 69 | 75 |
| 2014 | 72 | 90 |
| 2015 | 73 | 112 |
| 2016 | 54 | 102 |
| 2017 | 84 | 104 |
| 2018 | 59 | 105 |
| 2019 | 86 | 96 |
| 2020 | 94 | 124 |
| 2021 | 71 | 98 |
| 2022 | 63 | 102 |
| 2023 | 54 | 76 |
| 2024 | 77 | 79 |
| 2025 | 45 | 63 |
| 2026 | 25 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for the production of biodegradable superabsorbent polymer with high absorbency under load based on styrene maleic acid copolymers and biopolymer15 Sep 2026US 12,734,270 B2Polygreen Ltd
- Particulate water-absorbing agent1 Sep 2026US 12,722,141 B2Nippon Shokubai Co., Ltd.
- Two-part wound dressing25 Aug 2026US 12,714,831 B2Mayo Foundation for Medical Education and Research
- Elastomeric laminate with soft noncrimped spunbond fiber webs28 Jul 2026US 12,691,012 B2The Procter & Gamble Company
- Wound contact layer and dressing for iodine delivery21 Jul 2026US 12,685,798 B2T.J. Smith and Nephew, Limited
- Method for producing water-absorbent resin particles, water-absorbent resin particles, absorbent material and absorbent article24 Sep 2026US 2026/0284638 A1Sumitomo Seika Chemicals Co., Ltd.
- Absorbent composite materials, absorbent articles comprising absorbent composite materials, and methods of making thereof17 Sep 2026US 2026/0273506 A1Kimberly-Clark Worldwide, Inc.
- On-demand agent dispensing devices and related methods10 Sep 2026US 2026/0263282 A1Roxilla LLC
- Wound dressings with adhesive borders10 Sep 2026US 2026/0263284 A1Plastod SpA
- Endotoxin neutralising agent20 Aug 2026US 2026/0242413 A1Amferia AB
Most cited
By later US patents
- Composite wound dressing1,398US 4,373,519 AMinnesota Mining and Manufacturing Company · 1983
- Dried hydrogel from hydrophilic-hygroscopic polymer1,241US 5,409,703 ACarrington Laboratories, Inc. · 1995
- High-density absorbent structures1,161US 4,610,678 A1986
- Absorbent articles with dual-layered cores968US 4,673,402 AThe Procter & Gamble Company · 1987
- Method of making an absorbent composite883US 6,863,924 B2Kimberly-Clark Worldwide, Inc. · 2005