Patent US4639254A successfully refreshed from Google Patents.
US4639254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional sanitary napkin having absorbent material contoured on the baffle side
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1985-10-24
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Granted: 1987-01-27
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Expires: 2005-10-24
Abstract
Abstract A three-dimensionally hourglass-shaped sanitary napkin with a cellulose fluff insert for absorption that is outwardly bulging on the baffle side to create a thicker region near the center of the sanitary napkin. The baffle or fluid-impervious layer wraps around the absorbent cellulose fluff insert to form a well thereby maintaining fluid within its borders to afford increased protection from fluid leakage.
Inventors
- 👤 Robert H. LeGault
- 👤 Arrigo D. Jezzi
- 👤 James D. Milner
- 👤 Barbara Oakley
- 👤 Paul G. Franke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:49
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/472; A61F13/47218
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
107 words
A three-dimensional hourglass-shaped sanitary napkin comprising a fluid permeable cover with a body contacting surface, an absorbent material adjacent the fluid permeable cover and a fluid impermeable baffle adjacent the alternate side of the absorbent material and having a garment facing surface, said sanitary napkin being substantially hourglass-shaped, comprising (a) two end lobe regions and (b) a middle region, said absorbent material in said middle region being outwardly bulging in said middle region by a greater amount than the absorbent in the end region on the alternate absorbent side adjacent the baffle and wherein said middle region comprises a greater amount of absorbent than said lobe regions.
Claim 2
Dependent Claim
107 words
A three-dimensional hourglass-shaped sanitary napkin comprising a fluid permeable cover with a body contacting surface, an absorbent material adjacent the fluid permeable cover and a fluid impermeable baffle adjacent the alternate side of the absorbent material and having a garment facing surface, said sanitary napkin being substantially hourglass-shaped, comprising (a) two end lobe regions and (b) a middle region, said absorbent material in said middle region being outwardly bulging in said middle region by a greater amount than the absorbent in the end region on the alternate absorbent side adjacent the baffle and wherein said middle region comprises a greater amount of absorbent than said lobe regions.
Claim 3
Dependent Claim
23 words
The sanitary napkin of claim 1 wherein said outward bulge absorbent region is stepped down from said middle region to said lobe regions.
Claim 4
Dependent Claim
36 words
The sanitary napkin of claim 2 wherein the thickness of said absorbent material located in said middle region comprises about 1.5 to about 5 times the thickness of said absorbent material located in said lobe regions.
Claim 5
Dependent Claim
26 words
The sanitary napkin of claim 3 wherein said middle region absorbent thickness comprises about 1.75 to about 3.0 times the thickness of said lobe region absorbent.
Claim 6
Dependent Claim
28 words
The sanitary napkin of claim 1 wherein said middle region absorbent comprises a density greater than the density of the absorbent in the lobe regions of said napkin.
Claim 7
Dependent Claim
14 words
The sanitary napkin of claim 1 wherein said absorbent material comprises a superabsorbent composition.
Claim 8
Dependent Claim
13 words
The sanitary napkin of claim 1 wherein said absorbent material comprises cellulosic material.
Claim 9
Dependent Claim
13 words
A sanitary napkin of claim 1 wherein said baffle comprises ethylene methyl acrylate.
Claim 10
Dependent Claim
21 words
A sanitary napkin of claim 1 wherein a discreet adhesive member is attached to the garment facing surface of the baffle.
Claim 11
Dependent Claim
17 words
A sanitary napkin of claim 9wherein said discreet adhesive member is in the form of longitudinal strips.
Claim 12
Dependent Claim
34 words
The sanitary napkin of claim 1 wherein said absorbent is wood fluff and said greater amount of absorbent in said middle region comprises thicker fluff than the fluff in and said end lobe portions.
Claim 13
Dependent Claim
95 words
A sanitary napkin comprising a fluid-permeable bodyside cover, an absorbent material adjacent said fluid-permeable cover and a fluid impermeable outer baffle, wherein (a) said napkin has an hourglass-shape comprising two end lobe regions and a narrower middle region, (b) said narrower middle region is outwardly bulging on the side of said absorbent adjacent said baffle, (c) the absorbent in said middle region is thicker than the absorbent in the end regions, (d) said absorbent is wood fluff, and (e) said middle region is about 1.5 to about 5 times the thickness of said lobe regions.
Claim 14
Dependent Claim
95 words
A sanitary napkin comprising a fluid-permeable bodyside cover, an absorbent material adjacent said fluid-permeable cover and a fluid impermeable outer baffle, wherein (a) said napkin has an hourglass-shape comprising two end lobe regions and a narrower middle region, (b) said narrower middle region is outwardly bulging on the side of said absorbent adjacent said baffle, (c) the absorbent in said middle region is thicker than the absorbent in the end regions, (d) said absorbent is wood fluff, and (e) said middle region is about 1.5 to about 5 times the thickness of said lobe regions.
Claim 15
Dependent Claim
23 words
The napkin of claim 12 wherein said middle region is about 1.75 to about 3.0 times the thickness of said lobe region abosorbent.
Claim 16
Dependent Claim
20 words
The napkin of claim 1 wherein said baffle in said middle region forms a well in the outwardly bulging portin.
Claim 17
Dependent Claim
15 words
The napkin of claim 1 wherein the bodyside surface of said pad is generally planar.
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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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |