US4531945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi layer sanitary appliance
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1983-10-31
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Granted: 1985-07-30
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Expires: 2003-10-31
Abstract
Abstract A sanitary appliance such as a sanitary napkin is provided with at least three layers of absorbent material with the first and third layer being substantially identical and having areas of contact through at least one opening in the second layer.
Inventors
- 👤 John P. Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/539; A61F13/534; A61F13/537; A61F13/53708; A61F13/53713; A61F13/15203; A61F2013/15284; A61F2013/15487; A61F2013/15504; A61F2013/530131; A61F2013/53445; A61F2013/53721; A61F2013/53765; A61F2013/53782; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/237
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A secretafacient article comprising in combination; (a) a fluid pervious cover (b) a fluid impermeable baffle (c) an absorbent system with at least three substantially coextensive layers including (1) a first absorbent layer with relatively large capillaries with a top surface adjacent said cover and a bottom surface, said first absorbent layer including a zone through which fluid generally migrates downward; and (2) a second absorbent layer with relatively small capillaries and a top surface adjacent the bottom surface of said first absorbent layer; said second layer having a bottom surface and at least one opening through said top and bottom surfaces beneath said zone in said first layer; and (3) a third layer similar in capiliary size to said first layer with a top surface adjacent said bottom surface of said second layer and a bottom surface near said baffle, said top surface in contact with said bottom surface of said first layer through said at least one opening in said second layer.
Claim 2
Dependent Claim
164 words
A secretafacient article comprising in combination; (a) a fluid pervious cover (b) a fluid impermeable baffle (c) an absorbent system with at least three substantially coextensive layers including (1) a first absorbent layer with relatively large capillaries with a top surface adjacent said cover and a bottom surface, said first absorbent layer including a zone through which fluid generally migrates downward; and (2) a second absorbent layer with relatively small capillaries and a top surface adjacent the bottom surface of said first absorbent layer; said second layer having a bottom surface and at least one opening through said top and bottom surfaces beneath said zone in said first layer; and (3) a third layer similar in capiliary size to said first layer with a top surface adjacent said bottom surface of said second layer and a bottom surface near said baffle, said top surface in contact with said bottom surface of said first layer through said at least one opening in said second layer.
Claim 3
Dependent Claim
15 words
The article according to claim 1 wherein the second layer comprises surfactant treated meltblown microfiber.
Claim 4
Dependent Claim
25 words
The secretafacient according to claim 1 wherein the first and third layer are formed from a turbulently airlaid mixture of meltblown microfiber and woodpulp fibers.
Claim 5
Dependent Claim
17 words
The article according to claim 2 or 3 wherein the second layer contains spacedly entrapped superabsorbent material.
References Cited (Backward Citations)
US3699966A
Cited
US3825006A
Cited
US3936555A
Cited
US4357939A
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US4372312A
Cited
US4413996A
Cited
US4411660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |