A61F 2013/530481
Having superabsorbent materials, i.e. highly absorbent polymer gel materials
Official title: {having superabsorbent materials, i.e. highly absorbent polymer gel materials}
A61F2013/530481 (Having superabsorbent materials, i.e. highly absorbent polymer gel materials) appears on 1,496 US grants and 1,525 published applications in this corpus.
Search patents in A61F- Granted patents
- 1,496
- Published applications
- 1,525
- Assignees
- 341
- Inventors
- 2,627
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 13 | 0 |
| 1983 | 16 | 0 |
| 1984 | 10 | 0 |
| 1985 | 12 | 0 |
| 1986 | 15 | 0 |
| 1987 | 20 | 0 |
| 1988 | 15 | 0 |
| 1989 | 31 | 0 |
| 1990 | 20 | 0 |
| 1991 | 35 | 0 |
| 1992 | 26 | 0 |
| 1993 | 38 | 0 |
| 1994 | 52 | 0 |
| 1995 | 48 | 0 |
| 1996 | 45 | 0 |
| 1997 | 41 | 0 |
| 1998 | 49 | 0 |
| 1999 | 30 | 0 |
| 2000 | 20 | 0 |
| 2001 | 27 | 9 |
| 2002 | 31 | 32 |
| 2003 | 31 | 60 |
| 2004 | 18 | 45 |
| 2005 | 16 | 34 |
| 2006 | 11 | 25 |
| 2007 | 12 | 37 |
| 2008 | 4 | 34 |
| 2009 | 8 | 22 |
| 2010 | 21 | 35 |
| 2011 | 24 | 42 |
| 2012 | 19 | 43 |
| 2013 | 24 | 48 |
| 2014 | 32 | 64 |
| 2015 | 48 | 97 |
| 2016 | 47 | 81 |
| 2017 | 58 | 102 |
| 2018 | 36 | 84 |
| 2019 | 49 | 80 |
| 2020 | 67 | 109 |
| 2021 | 79 | 88 |
| 2022 | 43 | 107 |
| 2023 | 48 | 78 |
| 2024 | 65 | 60 |
| 2025 | 63 | 70 |
| 2026 | 48 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- A61F 2013/53051Being only in particular parts or specially arrangedIndexing code539
- A61F 2013/530583Characterized by the formIndexing code319
- A61F 2013/530489Being randomly mixed in with other materialIndexing code297
- A61F 2013/5307Characterized by the quantity or ratio of superabsorbent materialIndexing code217
- A61F 2013/530708Characterized by the absorbency propertiesIndexing code202
- A61F 2013/530569Characterized by the particle sizeIndexing code131
- A61F 2013/530671Being mixed with mineral or inert materialIndexing code56
- A61F 2013/530788Characterized by the gel layer permeabilityIndexing code19
All 9 subgroupsShow fewer
Recent patents
- Absorbent article comprising a lower acquisition and distribution layer6 Oct 2026US 12,751,867 B2The Procter & Gamble Company
- 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.
- Two phase absorbent composites15 Sep 2026US 12,734,080 B2Kimberly-Clark Worldwide, Inc.
- Absorbent body for use in an absorbent article18 Aug 2026US 12,708,570 B2Kimberly-Clark Worldwide, Inc.
- 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
- Method and apparatus for producing fluff-free absorbent cores17 Sep 2026US 2026/0272724 A1Fameccanica, Data S.P A.
- Absorbent structures and methods for manufacturing absorbent structures17 Sep 2026US 2026/0272728 A1Kimberly-Clark Worldwide, Inc.
- Composite absorbent material17 Sep 2026US 2026/0272729 A1The Procter & Gamble Company
Most cited
By later US patents
- Composite wound dressing1,398US 4,373,519 AMinnesota Mining and Manufacturing Company · 1983
- Disposable incontinence garment or training pant1,298US 4,940,464 AKimberly-Clark Corporation · 1990
- High-density absorbent structures1,161US 4,610,678 A1986
- Absorbent article with dynamic elastic waist feature having a predisposed resilient flexural hinge1,158US 5,151,092 AThe Procter & Gamble Company · 1992
- Thin-unit-wet absorbent foam materials for aqueous body fluids and process for making same1,130US 5,387,207 AThe Procter & Gamble Company · 1995