A61F 13/53
Characterised by the absorbing medium
Official title: characterised by the absorbing medium (A61F13/20 takes precedence)
A61F13/53 (Characterised by the absorbing medium) appears on 4,133 US grants and 4,063 published applications in this corpus.
Search patents in A61F- Granted patents
- 4,133
- Published applications
- 4,063
- Assignees
- 716
- Inventors
- 5,843
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 32 | 0 |
| 1978 | 23 | 0 |
| 1979 | 11 | 0 |
| 1980 | 31 | 0 |
| 1981 | 27 | 0 |
| 1982 | 39 | 0 |
| 1983 | 32 | 0 |
| 1984 | 30 | 0 |
| 1985 | 51 | 0 |
| 1986 | 51 | 0 |
| 1987 | 64 | 0 |
| 1988 | 60 | 0 |
| 1989 | 61 | 0 |
| 1990 | 51 | 0 |
| 1991 | 57 | 0 |
| 1992 | 55 | 0 |
| 1993 | 63 | 0 |
| 1994 | 93 | 0 |
| 1995 | 100 | 0 |
| 1996 | 101 | 0 |
| 1997 | 103 | 0 |
| 1998 | 129 | 0 |
| 1999 | 101 | 0 |
| 2000 | 83 | 0 |
| 2001 | 85 | 38 |
| 2002 | 132 | 130 |
| 2003 | 132 | 214 |
| 2004 | 90 | 182 |
| 2005 | 60 | 156 |
| 2006 | 57 | 126 |
| 2007 | 53 | 116 |
| 2008 | 46 | 90 |
| 2009 | 46 | 67 |
| 2010 | 76 | 106 |
| 2011 | 69 | 104 |
| 2012 | 76 | 140 |
| 2013 | 85 | 157 |
| 2014 | 97 | 144 |
| 2015 | 114 | 228 |
| 2016 | 115 | 186 |
| 2017 | 111 | 221 |
| 2018 | 110 | 202 |
| 2019 | 124 | 218 |
| 2020 | 150 | 253 |
| 2021 | 191 | 198 |
| 2022 | 127 | 221 |
| 2023 | 119 | 168 |
| 2024 | 154 | 163 |
| 2025 | 137 | 143 |
| 2026 | 99 | 92 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61F 13/534Having an inhomogeneous composition through the thickness of the pad2,331
- A61F 2013/530481Having superabsorbent materials, i.e. highly absorbent polymer gel materialsIndexing code1,496
- A61F 13/531Having a homogeneous composition through the thickness of the pad1,210
- A61F 13/539Characterised by the connection of the absorbent layers with each other or1,029
- A61F 2013/530131Being made in fibre but being not pulpIndexing code811
- A61F 2013/530007Being made from pulpIndexing code474
- A61F 2013/530802Characterized by the foam or sponge other than superabsorbentIndexing code333
- A61F 2013/530868Characterized by the liquid distribution or transport means other than wicking layerIndexing code302
Recent patents
- Absorbent article comprising a lower acquisition and distribution layer6 Oct 2026US 12,751,867 B2The Procter & Gamble Company
- Absorbent article with improved capillary acceleration sheet6 Oct 2026US 12,751,869 B2Drylock Technologies NV
- Absorbent cores and methods for forming absorbent cores22 Sep 2026US 12,740,897 B2Kimberly-Clark Worldwide, Inc.
- Multi-layer absorbent cores and methods of manufacture22 Sep 2026US 12,740,898 B2Kimberly-Clark Worldwide, Inc.
- Absorbent article with improved bottom distribution assembly22 Sep 2026US 12,740,901 B2Drylock Technologies NV
- Elastomeric laminate(s) for absorbent article donning8 Oct 2026US 2026/0306309 A1The Procter & Gamble Company
- Absorbent article with apertured liquid acquisition layer and stabilizing elements8 Oct 2026US 2026/0306313 A1Essity Hygiene ang Health Aktiebolag
- Paper diaper core, paper diaper equipped with same, and method for preparing same1 Oct 2026US 2026/0294697 A1Shandong Thrive Maternity and Infant Products Co., Ltd
- Absorbent cores for disposable absorbent articles1 Oct 2026US 2026/0294699 A1Glatfelter Falkenhagen GmbH
- Absorbent article comprising an outer cover and a detachable insert24 Sep 2026US 2026/0283860 A1Essity Hygiene and Health Aktiebolag
Most cited
By later US patents
- Device for treating tissues, for example skin1,592US 4,382,441 A1983
- Process for making a soft, strong, absorbent material for use in absorbent articles1,412US 6,485,667 B1Rayonier Products and Financial Services Company · 2002
- Composite wound dressing1,398US 4,373,519 AMinnesota Mining and Manufacturing Company · 1983
- Irrigation dressing1,388US 5,358,494 A1994
- Hydrophilic polypropylene fibers having antimicrobial activity1,367US 6,762,339 B13M Innovative Properties Company · 2004