US4655759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduced leakage menstrual pad with built-in fold lines
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1985-09-19
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Granted: 1987-04-07
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Expires: 2005-09-19
Abstract
Abstract A sanitary napkin is provided which minimizes the probability of side staining or side leakage by using embossed channels which are located adjacent to the longitudinal edges of the napkin. These embossed channels are activated during use by the thighs, allowing the sides of the napkin to fold upwards during use, thus forming an occlusive container.
Inventors
- 👤 Alice Y. Romans-Hess
- 👤 Frederick M. Guenther
- 👤 Lenore S. Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:19
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/475; A61F13/4751; A61F13/4756; A61F13/51; A61F13/511; A61F13/51104; A61F13/51108; A61F13/53; A61F13/534; A61F2013/51078; A61F2013/530131; A61F2013/53445; A61F13/539; A61F2013/5395
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A samitary napkin comprising a flexible, fluid impermeable backing sheet, a layer of absorbent material on said backing sheet and a fluid permeable cover having embossed in the absorbent on the user side face surface thereof a pair of embosed channels, said embossed channels located on each side of the longitudinal axis of said sanitary napkin with each of the neds of said embossed channels spaced apart from the edge of said sanitary napkin at least 1/8 inch, said channels in use being spaced apart from the napkin wearer's body and allowing said napkin edges to fold upward at said embossed channels to form an occlusive volume between said napkin and the wearer's body.
Claim 2
Dependent Claim
114 words
A samitary napkin comprising a flexible, fluid impermeable backing sheet, a layer of absorbent material on said backing sheet and a fluid permeable cover having embossed in the absorbent on the user side face surface thereof a pair of embosed channels, said embossed channels located on each side of the longitudinal axis of said sanitary napkin with each of the neds of said embossed channels spaced apart from the edge of said sanitary napkin at least 1/8 inch, said channels in use being spaced apart from the napkin wearer's body and allowing said napkin edges to fold upward at said embossed channels to form an occlusive volume between said napkin and the wearer's body.
Claim 3
Dependent Claim
20 words
A sanitary napkin according to claim 1 wherein said cover is embossed with a plurality of pairs of embossed channels.
Claim 4
Dependent Claim
23 words
The napkin of claim 1 wherein the longitudinal edges are linear and said channels are arcuate whereby said napkin conforms with wearer's body.
Claim 5
Dependent Claim
169 words
A sanitary napkin comprising a flexible fluid impermeable backing sheet, a layer of absorbent material on said backing sheet, and a fluid permeable cover having embossed on the user side face surface thereof at least one pair of embossed channels extending into said cover and said absorbent, said embossed channels being arcuate in a mirror image configuration with the closest points of the arcs in the middle of said napkin, said embossed channels having their ends spaced inward from the edge of said napkin at least 1/8 inch, and adapted to allow the edges to turn upward when in use to form an occlusive volume in between said napkin and the wearer's body, wherein the upward folded edges are absorbent and are provided with said fluid-impervious backing sheet and wherein during use of said napkin the embossed channels are adapted to be activated by the thighs of the wearer to allow the absorbent edges to fold upwards to form said occlusive volume between the wearer's body and said napkin.
Claim 6
Dependent Claim
169 words
A sanitary napkin comprising a flexible fluid impermeable backing sheet, a layer of absorbent material on said backing sheet, and a fluid permeable cover having embossed on the user side face surface thereof at least one pair of embossed channels extending into said cover and said absorbent, said embossed channels being arcuate in a mirror image configuration with the closest points of the arcs in the middle of said napkin, said embossed channels having their ends spaced inward from the edge of said napkin at least 1/8 inch, and adapted to allow the edges to turn upward when in use to form an occlusive volume in between said napkin and the wearer's body, wherein the upward folded edges are absorbent and are provided with said fluid-impervious backing sheet and wherein during use of said napkin the embossed channels are adapted to be activated by the thighs of the wearer to allow the absorbent edges to fold upwards to form said occlusive volume between the wearer's body and said napkin.
Claim 7
Dependent Claim
19 words
The napkin of claim 4 wherein said embossed channels are between about 0.020 inch and about 0.250 in width.
Claim 8
Dependent Claim
16 words
The napkin of claim 4 wherein said napkin is provided with one pair of embossed channels.
References Cited (Backward Citations)
US2064431A
Cited
US2787271A
Cited
US3395201A
Cited
US3411504A
Cited
US3559650A
Cited
US3575174A
Cited
US3736931A
Cited
US4059114A
Cited
EP0091412A2
Cited
EP0136524A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |