Patent US4648876A successfully refreshed from Google Patents.
US4648876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathable panty liner
Assignee: Personal Products Co
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Filing: 1982-09-24
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Granted: 1987-03-10
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Expires: 2002-09-24
Abstract
Abstract A panty liner is provided which will prevent the strike through of absorbed liquid body fluids while allowing evaporated body fluids to pass therethrough. The liner includes one or more plies of a fibrous layer which is liquid repellent and air permeable.
Inventors
- 👤 Patricia E. Becker
- 👤 Kenneth J. Molee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:27
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/514; A61F13/51456; A61F13/51458; A61F13/51462; A61F13/51401; A61F13/56; A61F13/5605; A61F13/5611; A61F13/53; A61F13/534; A61F13/537; A61F13/45; A61F13/47; A61F2013/4708; A61F13/511; A61F13/513; A61F2013/51377; A61F2013/53445; A61F13/539; A61F2013/5395; A61F13/58; A61F2013/583
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A panty liner to be worn in the crotch portion of an undergarment comprising: a central body fluid absorbent core having a body facing side and a garment facing side; said garment facing side being overlaid by at least one ply of a fibrous, vapor permeable, liquid repellent layer for protecting said undergarment from body fluids while allowing evaporated, body fluids to pass therethrough; said ply having a degree of repellency of at least 3.0 cm of water and an air permeability of at least 20 ft. 3 /ft. 2 /min; and said panty liner having an air permeability of at least 10 ft. 3 /ft. 2 /min.
Claim 2
Dependent Claim
108 words
A panty liner to be worn in the crotch portion of an undergarment comprising: a central body fluid absorbent core having a body facing side and a garment facing side; said garment facing side being overlaid by at least one ply of a fibrous, vapor permeable, liquid repellent layer for protecting said undergarment from body fluids while allowing evaporated, body fluids to pass therethrough; said ply having a degree of repellency of at least 3.0 cm of water and an air permeability of at least 20 ft. 3 /ft. 2 /min; and said panty liner having an air permeability of at least 10 ft. 3 /ft. 2 /min.
Claim 3
Dependent Claim
20 words
The panty liner of claim 1 wherein said ply has a repellency of at least about 3.5 cm. of water.
Claim 4
Dependent Claim
23 words
The panty liner of claim 1 wherein said panty liner has an air permeability of at least 15 ft. 3 /ft. 2 /min.
Claim 5
Dependent Claim
19 words
The panty liner of claim 1 wherein said ply has a median pore radius of less than 35 microns.
Claim 6
Dependent Claim
22 words
The panty liner of claim 4 wherein said ply has a median pore radius ranging from about 5 to about 30 microns.
Claim 7
Dependent Claim
18 words
The panty liner of claim 1 wherein said ply comprises cellulosic fibers treated to be body liquid repellent.
Claim 8
Dependent Claim
15 words
The panty liner of claim 6 wherein said ply comprising cellulosic fibers is tissue paper.
Claim 9
Dependent Claim
24 words
The panty liner of claim 7 wherein said tissue paper has a base weight of from about 0.2 to about 1.0 oz/yd 2 .
Claim 10
Dependent Claim
21 words
The panty liner of claim 1 wherein said ply comprises a web of synthetic polymeric fibers held together by fusion bonding.
Claim 11
Dependent Claim
23 words
The panty liner of claim 9 wherein said fibers are chosen from the group consisting of polyethylene, polypropylene, polyester fibers or mixtures thereof.
Claim 12
Dependent Claim
18 words
The panty liner of claim 10 wherein said liner has an overall thickness of less than 1.0 cm.
Claim 13
Dependent Claim
18 words
The panty liner of claim 11 wherein said liner has an overall thickness of less than 0.75 cms.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |