Patent US4738676A successfully refreshed from Google Patents.
US4738676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pantiliner
Assignee: Procter and Gamble Co
•
Filing: 1986-06-12
•
Granted: 1988-04-19
•
Expires: 2006-06-12
Abstract
Abstract A pantiliner consisting essentially of an overwrap and a resilient element. The overwrap is a soft, smooth, compliant, porous material while the resilient element is compressible, conformable, and resilient. The former can be any material commonly used as a topsheet for sanitary napkins while the latter is preferably a mass of moisture insensitive fibers which can be bonded one to another at their points of contact. Preferably, the surfaces of the fibers are hydrophilic. Adhesive attachment means are preferably associated with the pantiliner.
Inventors
- 👤 Thomas W. Osborn, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:17
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; A61F13/539; A61F13/534; A61F13/537; A61F13/56; A61F13/58; A61F13/45; A61F13/47; A61F2013/4708; A61F2013/530131; A61F2013/530182; A61F2013/530802; A61F13/53708; A61F2013/53721; A61F2013/583
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A sanitary napkin comprising a means for containing vaginal discharges consisting solely of a rersilient element of a relatively low density, compressible, conformable and resilient batt of synthetic fibers having interstices to provide sufficient void volume to contain practical quantities of vaginal discharges, the surfaces of said fibers being hydrophilic so as to rapidly contain the vaginal discharges and said fibers being bonded on to another at a significant number of their points of intersection, said resilient element possessing a resilience such that it will recover at least about 80% of its original volume after it is released from a compression force that reduces its volume to about 20% of its original volume, the resilience being essentially unaffected by the presence of moisture; and a porous overwrap enclosing said means for containing vaginal discharges.
Claim 2
Dependent Claim
134 words
A sanitary napkin comprising a means for containing vaginal discharges consisting solely of a rersilient element of a relatively low density, compressible, conformable and resilient batt of synthetic fibers having interstices to provide sufficient void volume to contain practical quantities of vaginal discharges, the surfaces of said fibers being hydrophilic so as to rapidly contain the vaginal discharges and said fibers being bonded on to another at a significant number of their points of intersection, said resilient element possessing a resilience such that it will recover at least about 80% of its original volume after it is released from a compression force that reduces its volume to about 20% of its original volume, the resilience being essentially unaffected by the presence of moisture; and a porous overwrap enclosing said means for containing vaginal discharges.
Claim 3
Dependent Claim
26 words
The sanitary napkin of claim 1 wherein said sanitary napkin includes an additional component comprising a wicking layer interposed between said overwrap and said resilient element.
Claim 4
Dependent Claim
15 words
The sanitary napkin of claims 1 or 2 wherein said overwrap comprises a non-woven fabric.
Claim 5
Dependent Claim
16 words
The sanitary napkin of claims 1 or 2 wherein said overwrap comprise a formed thermoplastic film
Claim 6
Dependent Claim
25 words
The sanitary napkin of claim 1 which includes as an additional element a liquid impervious sheet interposed between said resilient element and said porous overwrap.
References Cited (Backward Citations)
US3105491A
Cited
US3229691A
Cited
US3371667A
Cited
US3973567A
Cited
US3987792A
Cited
US4023571A
Cited
US4200103A
Cited
US4275105A
Cited
US4219024A
Cited
US4405326A
Cited
US4397644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |