US5268213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-permeable topsheet for body fluid absorbent articles
Assignee: Unicharm Corp
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Filing: 1993-01-04
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Granted: 1993-12-07
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Expires: 2013-01-04
Abstract
Abstract To control a flow of body fluid generally occurring on the liquid-permeable topsheet for body fluid absorbent article in a predetermined direction, here is disclosed an improved liquid-permeable topsheet made of thermoplastic synthetic resin comprising a plurality of first direction ribs and a plurality of second direction ribs crossing the first direction ribs so as to a unique rib structure. Tops 7 of the second direction ribs 3 are connected with opposite sides 6 of the respective first direction ribs 2 and each pair of adjacent first direction ribs 2 define a groove 10 serving to guide the body fluid in the predetermined direction.
Inventors
- 👤 Masaki Murakami
- 👤 Hiroyuki Inagaki
- 👤 Yozo Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:29
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/51121; A61F13/51104; A61F13/51108; A61F13/512; A61F13/5126; A61F13/15203; A61F2013/15284; A61F2013/15365; A61F2013/51059; A61F2013/51066; A61F2013/51078; A61F2013/5108; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24537
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A liquid-permeable topsheet made of thermoplastic resin for body fluid absorbent articles, said liquid-permeable topsheet comprising: a plurality of first direction ribs each comprising a top longitudinally extending in a first direction and opposite sides curved downward from said top and longitudinally extending also in the first direction and a plurality of second direction ribs each having a top longitudinally extending in a second direction, these first and second direction ribs crossing one another; each pair of adjacent first direction ribs and each pair of adjacent second direction ribs crossing said pair of adjacent first direction ribs defining each liquid-permeable opening; and at respective crossings of these first and second direction ribs, the tops of the second direction ribs being connected with the sides of the first direction ribs so as to form a crossed rib structure.
Claim 2
Dependent Claim
137 words
A liquid-permeable topsheet made of thermoplastic resin for body fluid absorbent articles, said liquid-permeable topsheet comprising: a plurality of first direction ribs each comprising a top longitudinally extending in a first direction and opposite sides curved downward from said top and longitudinally extending also in the first direction and a plurality of second direction ribs each having a top longitudinally extending in a second direction, these first and second direction ribs crossing one another; each pair of adjacent first direction ribs and each pair of adjacent second direction ribs crossing said pair of adjacent first direction ribs defining each liquid-permeable opening; and at respective crossings of these first and second direction ribs, the tops of the second direction ribs being connected with the sides of the first direction ribs so as to form a crossed rib structure.
References Cited (Backward Citations)
US2896618A
Cited
US3292619A
Cited
US3459618A
Cited
US3877140A
Cited
EP0018020A1
Cited
EP0039974A1
Cited
EP0305123A1
Cited
EP0313766A2
Cited
US5114776A
Cited
GB2235878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |