A61F 13/51311
The permeability gradient being in the vertical direction
Official title: {the permeability gradient being in the vertical direction}
A61F13/51311 (The permeability gradient being in the vertical direction) appears on 27 US grants and 19 published applications in this corpus.
Search patents in A61F- Granted patents
- 27
- Published applications
- 19
- Assignees
- 20
- Inventors
- 74
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 2 |
| 2004 | 1 | 3 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-layered non-woven structure for use as a component of disposable absorbent articles7 Jul 2026US 12,672,987 B2Twe Meulebeke
- Diaper with integrated disposal system5 May 2026US 12,616,620 B1
- Wearable article comprising a laminate31 Mar 2026US 12,589,037 B2The Procter & Gamble Company
- Absorbent article with function-formed topsheet, and method for manufacturing10 Jun 2025US 12,324,732 B2The Procter & Gamble Company
- Absorbent article with function-formed topsheet, and method for manufacturing21 Nov 2023US 11,819,393 B2The Procter & Gamble Company
- Multi-layered non-woven structure for use as a component of disposable absorbent articles16 Jul 2026US 2026/0199148 A1Twe Meulebeke
- Topical application for absorbent article5 Feb 2026US 2026/0033999 A1The Procter & Gamble Company
- Wearable article comprising a laminate25 Apr 2024US 2024/0130902 A1The Procter & Gamble Company
- Absorbent article with function-formed topsheet, and method for manufacturing8 Feb 2024US 2024/0041667 A1The Procter & Gamble Company
- Absorbent article6 Jan 2022US 2022/0000681 A1Kao Corporation
Most cited
By later US patents
- Composite cover material for absorbent articles and the like137US 4,781,962 AKimberly-Clark Corporation · 1988
- Liquid distribution unit and absorbent product having the same123US 7,935,861 B2Japan Absorbent Technology Institute · 2011
- Perforated films having channels with cutout portions capable of spontaneous fluid inversion105US 5,648,142 AEastman Chemical Company · 1997
- Method of manufacturing fluid transport webs exhibiting surface energy gradients91US 5,989,478 AThe Procter & Gamble Company · 1999
- Surgical sponge material75US 4,211,227 AThe Kendall Company · 1980