A61F 13/2051
Characterised by the material or the structure of the inner absorbing core
Official title: {characterised by the material or the structure of the inner absorbing core}
A61F13/2051 (Characterised by the material or the structure of the inner absorbing core) appears on 487 US grants and 455 published applications in this corpus.
Search patents in A61F- Granted patents
- 487
- Published applications
- 455
- Assignees
- 135
- Inventors
- 777
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 2 | 0 |
| 1980 | 13 | 0 |
| 1981 | 11 | 0 |
| 1982 | 17 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 0 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 17 | 0 |
| 1999 | 5 | 0 |
| 2000 | 12 | 0 |
| 2001 | 18 | 7 |
| 2002 | 13 | 23 |
| 2003 | 18 | 34 |
| 2004 | 15 | 25 |
| 2005 | 10 | 39 |
| 2006 | 10 | 23 |
| 2007 | 16 | 21 |
| 2008 | 7 | 30 |
| 2009 | 8 | 21 |
| 2010 | 22 | 26 |
| 2011 | 17 | 16 |
| 2012 | 14 | 19 |
| 2013 | 16 | 21 |
| 2014 | 22 | 20 |
| 2015 | 19 | 9 |
| 2016 | 9 | 9 |
| 2017 | 6 | 15 |
| 2018 | 12 | 8 |
| 2019 | 4 | 11 |
| 2020 | 5 | 14 |
| 2021 | 6 | 8 |
| 2022 | 5 | 14 |
| 2023 | 5 | 14 |
| 2024 | 16 | 13 |
| 2025 | 11 | 9 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tampon pledget for increased bypass leakage protection24 Feb 2026US 12,558,269 B2Edgewell Personal Care Brands, LLC
- Reduced-leakage tampon27 Jan 2026US 12,533,268 B2Tampro Inc.
- Tampon with wicking member and improved manufacturability6 Jan 2026US 12,514,759 B2The Procter & Gamble Company
- Vaginal fluid absorption and odor reduction16 Dec 2025US 12,496,234 B2LiviWell Inc.
- Vaginal fluid absorption and odor reduction21 Oct 2025US 12,447,064 B2LiviWell Inc.
- Reduced-leakage tampon10 Sep 2026US 2026/0263289 A1Tampro Inc.
- Method for forming a cellulosic tampon applicator2 Apr 2026US 2026/0090920 A1The Procter & Gamble Company
- Method for forming a cellulosic tampon applicator2 Apr 2026US 2026/0090921 A1The Procter & Gamble Company
- Tampon with wicking member and improved manufacturability26 Mar 2026US 2026/0083597 A1The Procter & Gamble Company
- Apparatus for vaginal cleansing, vaginal drug delivery, and toxic shock prevention29 Jan 2026US 2026/0027335 A1
Most cited
By later US patents
- Tampon detection system464US 6,348,640 B12002
- Absorbent article237US 4,381,783 AJohnson & Johnson · 1983
- Tampon especially for feminine hygiene and a process and apparatus for producing this217US 6,310,269 B1McNeil-PPC, Inc. · 2001
- Method of making a multi-layer absorbent article201US 6,177,606 B1Tambrands Inc. · 2001
- Liquid absorption devices195US 4,232,674 ALever Brothers Company · 1980