US4425130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound sanitary napkin
Assignee: Procter and Gamble Co
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Filing: 1981-06-12
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Granted: 1984-01-10
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Expires: 2001-06-12
Abstract
Abstract Compound sanitary napkins comprising a primary menstrual pad and a panty protector joined by union means having limited extent. The primary menstrual pad comprises an absorbent core and, optionally, a pad overwrap and, also optionally, a fluid barrier. The panty protector comprises an absorbent element and a moisture barrier and, optionally, a protector overwrap and, also optionally, adhesive attachment means. The two constituents are joined at their corresponding ends, with the absorbent element of the panty protector interposed between the moisture barrier of the panty protector and the primary menstrual pad, by the union means in such a manner that the two are free to move relative to one another along essentially their entire common length. In use, the compound sanitary napkin is secured to the user's undergarments (as by the optional adhesive attachment means) in such a position that the primary menstrual pad is interposed between the panty protector and the user's body.
Inventors
- 👤 Thomas A. DesMarais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/474; A61F13/53; A61F13/534; A61F13/539; A61F13/56; A61F13/58; A61F2013/4708; A61F13/505; A61F2013/5055; A61F2013/530131; A61F2013/53445; A61F2013/53908; A61F2013/582
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
123 words
A compound sanitary napkin comprising an elongate primary menstrual pad having two oppositely disposed ends and an elongate panty protector having two oppositely disposed ends wherein: (a.) said primary menstrual pad comprises a fibrous absorbent core; (b.) said panty protector comprises an absorbent element and a moisture barrier; and (c.) each of said ends of said primary menstrual pad is firmly affixed to the corresponding end of said panty protector by union means having limited extent in such a manner that there exists a continuous section comprising at least about 75% by length of the common length of said primary menstrual pad and said panty protector which section is uninterrupted by points of attachment between said primary menstrual pad and said panty protector.
Claim 2
Dependent Claim
123 words
A compound sanitary napkin comprising an elongate primary menstrual pad having two oppositely disposed ends and an elongate panty protector having two oppositely disposed ends wherein: (a.) said primary menstrual pad comprises a fibrous absorbent core; (b.) said panty protector comprises an absorbent element and a moisture barrier; and (c.) each of said ends of said primary menstrual pad is firmly affixed to the corresponding end of said panty protector by union means having limited extent in such a manner that there exists a continuous section comprising at least about 75% by length of the common length of said primary menstrual pad and said panty protector which section is uninterrupted by points of attachment between said primary menstrual pad and said panty protector.
Claim 3
Dependent Claim
16 words
The compound sanitary napkin of claim 1 wherein said primary menstrual pad comprises a pad overwrap.
Claim 4
Dependent Claim
15 words
The compound sanitary napkin of claim 2 wherein said panty protector comprises a protector overwrap.
Claim 5
Dependent Claim
15 words
The compound sanitary napkin of claim 1 wherein said panty protector comprises a protector overwrap.
Claim 6
Dependent Claim
19 words
The compound sanitary napkin of claim 1, 2, 3, or 4 wherein said panty protector comprises adhesive attachment means.
Claim 7
Dependent Claim
16 words
The compound sanitary napkin of claim 5 wherein said primary menstrual pad comprises a fluid barrier.
Claim 8
Dependent Claim
19 words
The compound sanitary napkin of claim 1, 2, 3, or 4 wherein said absorbent core comprises wood pulp fibers.
Claim 9
Dependent Claim
15 words
The compound sanitary napkin of claim 7 wherein said panty protector comprises adhesive attachment means.
Claim 10
Dependent Claim
26 words
The compound sanitary napkin of claim 1, 2, 3, or 4 wherein said absorbent core comprises an unbonded array of nonabsorbent, hydrophilic, resilient, moisture insensitive fibers.
Claim 11
Dependent Claim
15 words
The compound sanitary napkin of claim 9 wherein said panty protector comprises adhesive attachment means.
Claim 12
Dependent Claim
19 words
The compound sanitary napkin of claim 1, 2, 3, or 4 wherein said absorbent element comprises wood pulp fibers.
Claim 13
Dependent Claim
15 words
The compound sanitary napkin of claim 11 wherein said panty protector comprises adhesive attachment means.
Claim 14
Dependent Claim
23 words
The compound sanitary napkin of claim 1, 2, 3, or 4 wherein said absorbent element comprises at least one ply of paper tissue.
Claim 15
Dependent Claim
15 words
The compound sanitary napkin of claim 13 wherein said panty protector comprises adhesive attachment means.
Claim 16
Dependent Claim
21 words
The compound sanitary napkin of claim 2, 3, or 4 wherein said pad overwrap and said protector overwrap comprise non-woven fabric.
Claim 17
Dependent Claim
21 words
The compound sanitary napkin of claim 2, 3 or 4 wherein said pad overwrap and said protector overwrap comprise apertured film.
Claim 18
Dependent Claim
68 words
The compound sanitary napkin of claim 16 wherein said apertured film comprises a thermoplastic film having a caliper less than about 0.075 centimeter, an open area of at least about 35%, and wherein said apertures are irregular and at least about 25% of said apertues have an equivalent hydraulic diameter smaller than about 0.064 centimeter wherein said film functions as a moisture barrier and as a fluid barrier.
Claim 19
Dependent Claim
70 words
The compound sanitary napkin of claim 2 or 3 wherein said protector overwrap comprises an apertured film having a caliper less than about 0.075 centimeter, an open area of at least about 35%, and wherein said apertures are irregular and at least about 25% of said apertures have an equivalent hydraulic diameter smaller than about 0.064 centimeter and wherein said film functions as said overwrap and as said moisture barrier.
Claim 20
Dependent Claim
116 words
The compound sanitary napkin of claim 16 wherein said apertured film comprises a thermoplastic film provided with a multiplicity of protuberances having a base in the plane of said overwrap and an apex remote from said plane, wherein essentially each of said protuberances is provided with an aperture having a maximal diagonal of from about 0.025 centimeter to about 0.025 centimeter, and wherein essentially each base is provided with an aperture having a maximal diagonal at least as great as said maximal diagonal of said respective apex aperture, and herein the caliper of said film is from about 0.033 to about 0.089 centimeter wherein said film functions as a moisture barrier and as a fluid barrier.
Claim 21
Dependent Claim
119 words
The compound sanitary napkin of claim 2 or 3 wherein said protector overwrap comprises an apertured thermoplastic film provided with a multiplicity of protuberances having a base in the plane of said overwrap and an apex remote from said plane, wherein essentially each of said protuberances is provided with an aperture having a maximal diagonal of from about 0.025 centimeter to about 0.25 centimeter, and wherein essentially each base is provided with an aperture having a maximal diagonal at least as great as said maximal diagonal of said respective apex aperture, and wherein the caliper of said film is from about 0.033 to about 0.089 centimeter and wherein said film functions as said overwrap and as said moisture barrier.
Claim 22
Dependent Claim
93 words
The compound sanitary napkin of claim 2, 3 or 4 whereins said absorbent core comprises wood pulp fibers; said absorbent element comprises at least one ply of paper tissue; said pad overwrap and said protector overwrap comprise apertured thermoplastic film having a caliper less than about 0.075 centimeter, an open area of at least about 35%, and wherein said apertures are irregular and at least about 25% of said apertures have an equivalent hydraulic diameter smaller than about 0.064 centimeter wherein said film functions as a moisture barrier and as a fluid barrier.
Claim 23
Dependent Claim
31 words
The compound sanitary napkin of claim 21 wherein said overwraps are provided with a layer of uniformly distributed fibers affixed thereto, said uniformly distributed fibers being less hydrophobic than said overwrap.
Claim 24
Dependent Claim
15 words
The compound sanitary napkin of claim 21 wherein said panty protector comprises adhesive attachment means.
Claim 25
Dependent Claim
31 words
The compound sanitary napkin of claim 24 wherein said overwraps are provided with a layer of uniformly distributed fibers affixed thereto, said uniformly distributed fibers being less hydrophobic than said overwrap.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |