Patent US3349339A successfully refreshed from Google Patents.
Patent US4882204A successfully refreshed from Google Patents.
US4882204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaper spray
Assignee: Individual
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Filing: 1988-07-01
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Granted: 1989-11-21
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Expires: 2008-07-01
Abstract
Abstract The absorbency of a disposable diaper is increased by spraying the diaper with an aerosol spray containing absorbent powder, e.g. talcum, cornstarch or both. The powder particles are so fine (20-40 micron diameter) that the spray force drives many of them into the subsurface layers of the diaper, thus increasing the absorbency of the diaper. At the same time, some powder remains on the diaper surface to help protect the skin of the wearer in the absence of urine.
Inventors
- 👤 Harvey Tenenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:52
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/84; A61F13/8405; A61F15/00; A61L; A61L15/00; A61L15/16; A61L15/18; A61F13/51; A61F2013/51059; A61F2013/51066; A61F13/53; A61F2013/530481; A61F2013/8476
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A method of increasing the absorbency of a diaper, said diaper being of the kind having an inner porous skin-facing layer, a water resistant outer layer, and an absorbent layer therebetween, said method comprising: (a) selecting a finely divided absorbent powder, (b) spraying said powder onto said diaper, (c) the speed imparted to said powder during said step (b) being sufficiently high that a portion of said powder penetrates said skin-facing layer of said diaper and lodges within said absorbent layer of said diaper.
Claim 2
Independent Claim
84 words
A method of increasing the absorbency of a diaper, said diaper being of the kind having an inner porous skin-facing layer, a water resistant outer layer, and an absorbent layer therebetween, said method comprising: (a) selecting a finely divided absorbent powder, (b) spraying said powder onto said diaper, (c) the speed imparted to said powder during said step (b) being sufficiently high that a portion of said powder penetrates said skin-facing layer of said diaper and lodges within said absorbent layer of said diaper.
Claim 3
Dependent Claim
20 words
A method according to claim 1 wherein said absorbent powder comprises particles of between 20 and 40 microns in diameter.
Claim 4
Dependent Claim
35 words
A method according to claim 1 wherein said powder is sprayed from an aerosol container which is pressurized to a pressure of at least between 30 and 45 PSIG with a rapidly evaporating aerosol fluid.
Claim 5
Dependent Claim
20 words
A method according to claim 1 wherein said powder includes, mixed therein, a minor proportion of a skin protectant material.
Claim 6
Dependent Claim
46 words
A method according to claim 1 wherein said powder is selected from one or both of the materials talcum and cornstarch, and wherein said powder has, mixed therewith, a minor ingredient of a skin protectant material and a minor ingredient of a bacteria growth inhibiting material.
Claim 7
Dependent Claim
13 words
A method according to claim 1 wherein said diaper is a disposable diaper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |