A61F 13/51305
Having areas of different permeability
Official title: {having areas of different permeability}
A61F13/51305 (Having areas of different permeability) appears on 262 US grants and 230 published applications in this corpus.
Search patents in A61F- Granted patents
- 262
- Published applications
- 230
- Assignees
- 82
- Inventors
- 568
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 9 | 5 |
| 2002 | 8 | 13 |
| 2003 | 6 | 14 |
| 2004 | 5 | 17 |
| 2005 | 2 | 6 |
| 2006 | 3 | 8 |
| 2007 | 2 | 9 |
| 2008 | 3 | 4 |
| 2009 | 4 | 9 |
| 2010 | 7 | 15 |
| 2011 | 8 | 5 |
| 2012 | 6 | 7 |
| 2013 | 10 | 4 |
| 2014 | 7 | 7 |
| 2015 | 5 | 11 |
| 2016 | 5 | 14 |
| 2017 | 2 | 4 |
| 2018 | 6 | 13 |
| 2019 | 9 | 14 |
| 2020 | 7 | 13 |
| 2021 | 6 | 4 |
| 2022 | 6 | 6 |
| 2023 | 7 | 5 |
| 2024 | 10 | 15 |
| 2025 | 7 | 3 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-layered non-woven structure for use as a component of disposable absorbent articles7 Jul 2026US 12,672,987 B2Twe Meulebeke
- Absorbent article having multiple zones16 Jun 2026US 12,653,732 B2The Procter & Gamble Company
- 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
- Substrates and laminates for absorbent articles24 Feb 2026US 12,558,272 B2The Procter & Gamble Company
- Patterned Apertured Webs8 Oct 2026US 2026/0306312 A1The Procter & Gamble Company
- Multi-layered non-woven structure for use as a component of disposable absorbent articles16 Jul 2026US 2026/0199148 A1Twe Meulebeke
- Zonal topsheet for an absorbent article18 Jun 2026US 2026/0165887 A1The Procter & Gamble Company
- Absorbent garment7 May 2026US 2026/0124082 A1Shenzhen Lute Jiacheng Supply Chain Management Co., Ltd.
- Topical application for absorbent article5 Feb 2026US 2026/0033999 A1The Procter & Gamble Company
Most cited
By later US patents
- Disposable absorbent article having a stain resistant topsheet599US 4,324,246 AThe Procter & Gamble Company · 1982
- Dual-zoned absorbent webs287US 5,990,377 AKimberly-Clark Worldwide, Inc. · 1999
- Dual-zoned absorbent webs269US 6,395,957 B1Kimberly-Clark Worldwide, Inc. · 2002
- Absorbent article having blended multi-layer absorbent structure with improved integrity253US 5,486,167 AThe Procter & Gamble Company · 1996
- Body fluid absorbent article225US 5,387,209 AUni-Charm Corporation · 1995