A61F 13/535
Inhomogeneous in the plane of the pad
Official title: inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes ({A61F13/5323,} A61F13/537 take precedence)
A61F13/535 (Inhomogeneous in the plane of the pad) appears on 747 US grants and 812 published applications in this corpus.
Search patents in A61F- Granted patents
- 747
- Published applications
- 812
- Assignees
- 137
- Inventors
- 1,326
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 11 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 16 | 0 |
| 1995 | 20 | 0 |
| 1996 | 9 | 0 |
| 1997 | 18 | 0 |
| 1998 | 21 | 0 |
| 1999 | 22 | 0 |
| 2000 | 10 | 0 |
| 2001 | 14 | 4 |
| 2002 | 26 | 11 |
| 2003 | 20 | 36 |
| 2004 | 11 | 46 |
| 2005 | 10 | 18 |
| 2006 | 10 | 32 |
| 2007 | 8 | 20 |
| 2008 | 9 | 18 |
| 2009 | 10 | 10 |
| 2010 | 19 | 18 |
| 2011 | 10 | 18 |
| 2012 | 16 | 34 |
| 2013 | 12 | 33 |
| 2014 | 21 | 34 |
| 2015 | 31 | 63 |
| 2016 | 30 | 43 |
| 2017 | 38 | 50 |
| 2018 | 26 | 36 |
| 2019 | 25 | 55 |
| 2020 | 29 | 50 |
| 2021 | 46 | 42 |
| 2022 | 29 | 45 |
| 2023 | 21 | 33 |
| 2024 | 32 | 20 |
| 2025 | 33 | 26 |
| 2026 | 20 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Absorbent cores and methods for forming absorbent cores22 Sep 2026US 12,740,897 B2Kimberly-Clark Worldwide, Inc.
- Absorbent body for use in an absorbent article18 Aug 2026US 12,708,570 B2Kimberly-Clark Worldwide, Inc.
- Absorbent article14 Jul 2026US 12,678,342 B2Kimberly-Clark Worldwide, Inc.
- Absorbent article with improved channeled core and method of making30 Jun 2026US 12,667,499 B2Ontex BV
- Absorbent article30 Jun 2026US 12,667,503 B2Essity Hygiene and Health Akitebolag
- Composite absorbent material17 Sep 2026US 2026/0272729 A1The Procter & Gamble Company
- Absorbent article with asymmetric channel bond10 Sep 2026US 2026/0263294 A1The Procter & Gamble Company
- Absorbent article having flex bond channel regions20 Aug 2026US 2026/0240695 A1The Procter & Gamble Company
- Absorbent article with absorbent core structure having a shaped inner core layer13 Aug 2026US 2026/0232500 A1The Procter & Gamble Company
- Absorbent article with absorbent core structure having a shaped inner core layer13 Aug 2026US 2026/0232501 A1The Procter & Gamble Company
Most cited
By later US patents
- Thin-unit-wet absorbent foam materials for aqueous body fluids and process for making same1,130US 5,387,207 AThe Procter & Gamble Company · 1995
- High efficiency absorbent articles for incontinence management776US 5,147,345 AThe Procter & Gamble Company · 1992
- Absorbent foam materials for aqueous body fluids and absorbent articles containing such materials745US 5,260,345 AThe Procter & Gamble Company · 1993
- Slitted absorbent members for aqueous body fluids formed of expandable absorbent materials612US 5,397,316 AThe Procter & Gamble Company · 1995
- Absorbent articles with multiple layer absorbent layers488US 4,988,344 AThe Procter & Gamble Company · 1991