Patent US4904524A successfully refreshed from Google Patents.
US4904524A
Expired / Lapsed
US
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Wet wipes
Assignee: Procter and Gamble Co
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Filing: 1988-10-18
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Granted: 1990-02-27
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Expires: 2008-10-18
Abstract
Abstract A wet wipe comprising a porous sheet impregnated with an aqueous lotion and, concentrated near the surface of the sheet, polymeric beads containing a functional ingredient which is useful for treating the human skin or environmental surfaces and which are characterized in providing controlled release of the functional ingredient, and methods of making said wet wipe.
Inventors
- 👤 Ho-ward J. Yoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:12
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/049; A; A01; A01N; A01N25/00; A01N25/34; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/17; A61; A61K; A61K8/00; A61K8/02; A61K8/0208; A61K8/0241; A61Q; A61Q19/00; A61K2800/00; A61K2800/40; A61K2800/56; A61Q17/00; A61Q17/02; A61Q17/04; A61Q19/007; A61Q9/00; A61Q9/02; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249959; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T442/00; Y10T442/20; Y10T442/2016; Y10T442/2352
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
28 words
A porous sheet impregnated with an aqueous lotion comprising a hydrophobic functional ingredient entrapped in polymeric beads, said entrapped ingredient being concentrated near the surface of the sheet.
Claim 2
Dependent Claim
28 words
A porous sheet impregnated with an aqueous lotion comprising a hydrophobic functional ingredient entrapped in polymeric beads, said entrapped ingredient being concentrated near the surface of the sheet.
Claim 3
Dependent Claim
11 words
The sheet according to claim 1 wherein the beads are microsponges.
Claim 4
Dependent Claim
18 words
The sheet according to claim 1 wherein the beads are microsponges in the form of a polymeric matrix.
Claim 5
Dependent Claim
11 words
The sheet according to claim 1 wherein the beads are microcapsules.
Claim 6
Dependent Claim
26 words
The sheet according to claim 1 wherein said functional ingredient is dimethicone present in an amount between 0.5% to 30% by weight of the porous sheet.
Claim 7
Independent Claim
28 words
The method of making a wet wipe comprising a porous sheet impregnated with an aqueous lotion wherein the improvement comprises applying polymeric beads containing a hydrophobic functional ingredient.
Claim 8
Independent Claim
28 words
The method of making a wet wipe comprising a porous sheet impregnated with an aqueous lotion wherein the improvement comprises applying polymeric beads containing a hydrophobic functional ingredient.
Claim 9
Dependent Claim
13 words
The method of claim 6 wherein said beads are applied in dry form.
Claim 10
Dependent Claim
16 words
The method of claim 6 wherein said beads are applied in the form of a paste.
Claim 11
Independent Claim
22 words
The method of claims 6, 7 or 8 wherein said beads are applied before the sheet is impregnated with the aqueous lotion.
Claim 12
Independent Claim
22 words
The method of claims 6, 7 or 8 wherein said beads are applied after the sheet is impregnated with the aqueous lotion.
Claim 13
Dependent Claim
19 words
The method of claim 6 wherein said beads are mixed with the aqueous lotion when applied to the sheet.
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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) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |