US4397754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Personal cleaning products
Assignee: CALIGEN FOAM Ltd AND WE SAXBY (NOTTINGHAM) LIMITED
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Filing: 1981-09-24
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Granted: 1983-08-09
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Expires: 2001-09-24
Abstract
Abstract A disposable personal cleaning product comprises a thin substrate, preferably open celled polyurethane foam, from 1-5 mm thick having dispersed throughout its cross-section a detergent composition comprising a non-ionic alcohol ethoxylate and a fatty acid soap, preferably 90-10% by weight of the former and 10-90% by weight of the latter, the ratio of detergent composition to substrate being between 2:1 and 10:1 by weight. The substrate may be provided with slits or similar openings which may be engaged by a user's fingers to enable the product to be maintained in an open or spread condition during use.
Inventors
- 👤 Peter S. Collishaw
- 👤 Donald Bird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:09
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/049; C11D10/00; C11D10/04; C11D10/045; C11D1/00; C11D1/66; C11D1/72; Y; Y10; Y10S; Y10S521/00; Y10S521/905; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/249921; Y10T428/249994; Y10T428/249995
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
39 words
A disposable personal cleaning product comprising a substrate consisting of a sheet of open celled foam structure from 1-5 mm thick having dispersed throughout its cross-section a detergent composition comprising a non-ionic alcohol ethoxylate and a fatty acid soap.
Claim 2
Dependent Claim
39 words
A disposable personal cleaning product comprising a substrate consisting of a sheet of open celled foam structure from 1-5 mm thick having dispersed throughout its cross-section a detergent composition comprising a non-ionic alcohol ethoxylate and a fatty acid soap.
Claim 3
Dependent Claim
21 words
A product according to claim 1 wherein the ratio of detergent composition to substrate is between 2:1 and 10:1 by weight.
Claim 4
Dependent Claim
19 words
A product according to claim 2 wherein the ratio of detergent composition to substrate is approximately 4:1 by weight.
Claim 5
Dependent Claim
28 words
A product according to claim 2 wherein the detergent composition comprises 90-10% by weight of a non-ionic alcohol ethoxylate and 10-90% by weight of a fatty acid soap.
Claim 6
Dependent Claim
44 words
A product according to claim 1, 2 or 4 wherein the non-ionic alcohol ethoxylate is selected from natural fatty alcohols, linear synthetic alcohols and branched chain synthetic alcohols having 10 to 18 carbon atoms in the chain together with 10-30 moles of ethylene oxide.
Claim 7
Dependent Claim
53 words
A product according to claim 1, 2 or 4 wherein the non-ionic alcohol ethoxylate comprises a blend of two synthetic alcohol ethoxylates having 13 and 15 carbon atoms respectively in the chain in the ratio of 67% of the first to 33% of the second, both blended with 20 moles of ethylene oxide.
Claim 8
Dependent Claim
32 words
A product according to claim 1, 2 or 4 wherein the fatty acid soap comprises a saturated fatty acid having 10 to 22 carbon atoms neutralised with an organic amine or ammonia.
Claim 9
Dependent Claim
15 words
A product according to claim 7 wherein the fatty acid soap comprises stearic acid ethanolamine.
Claim 10
Dependent Claim
17 words
A product according to claim 1, 2 or 4 including 2-5% by weight of a perfume composition.
Claim 11
Dependent Claim
17 words
A product according to claim 1, 2 or 4 wherein said open-celled foam structure comprises polyurethane foam.
Claim 12
Dependent Claim
13 words
A product according to claim 10 wherein said foam structure comprises polyester-urethane foam.
Claim 13
Dependent Claim
17 words
A product according to claim 10 wherein said foam has 18 to 22 cells per linear centimeter.
Claim 14
Dependent Claim
61 words
A product according to claim 1, 2 or 4 wherein said substrate is provided with through openings disposed at and confined to peripheral regions thereof, said openings being positioned for ready engagement by a user's fingers to enable the product to be maintained in an open or spread condition during use, and the remaining surface area of said substrate being unbroken.
Claim 15
Dependent Claim
11 words
A product according to claim 13 wherein said openings comprise slits.
Claim 16
Dependent Claim
28 words
A product according to claim 13 which is of generally rectangular shape and wherein three such openings are provided adjacent three of the four edges of the product.
Claim 17
Dependent Claim
61 words
A disposable personal cleaning product comprising a substrate consisting of a sheet of open celled polyurethane foam from 1-5 mm thick having dispersed throughout its cross-section a detergent composition comprising 90-10% by weight of a non-ionic alcohol ethoxylate and 10-90% by weight of a fatty acid soap, the ratio of detergent composition to substrate being between 2:1 and 10:1 by weight.
Claim 18
Dependent Claim
61 words
A disposable personal cleaning product comprising a substrate consisting of a sheet of open celled polyurethane foam from 1-5 mm thick having dispersed throughout its cross-section a detergent composition comprising 90-10% by weight of a non-ionic alcohol ethoxylate and 10-90% by weight of a fatty acid soap, the ratio of detergent composition to substrate being between 2:1 and 10:1 by weight.
Claim 19
Dependent Claim
37 words
A product according to claim 16 wherein said substrate is provided with through openings which may be engaged by a user's fingers to enable the product to be maintained in an open or spread condition during use.
Claim 20
Dependent Claim
61 words
A personal cleaning product comprising an open celled substrate of thin sheet-like form provided with through openings disposed at and confined to peripheral regions thereof, said openings being positioned for ready engagement by a user's fingers to enable the product to be maintained in an open or spread condition during use, and the remaining surface area of said substrate being unbroken.
Claim 21
Dependent Claim
61 words
A personal cleaning product comprising an open celled substrate of thin sheet-like form provided with through openings disposed at and confined to peripheral regions thereof, said openings being positioned for ready engagement by a user's fingers to enable the product to be maintained in an open or spread condition during use, and the remaining surface area of said substrate being unbroken.
Claim 22
Independent Claim
71 words
A method of producing a disposable personal cleaning product comprising impregnating a continuously moving sheet of open-celled foam from 1-5 mm thick with a detergent composition comprising a non-ionic alcohol ethoxylate and a fatty acid soap in a melted condition by compressing the foam sheet, applying the melted detergent composition, and allowing the sheet to expand to draw the composition into and disperse it throughout the cross-section of the foam structure.
Claim 23
Independent Claim
71 words
A method of producing a disposable personal cleaning product comprising impregnating a continuously moving sheet of open-celled foam from 1-5 mm thick with a detergent composition comprising a non-ionic alcohol ethoxylate and a fatty acid soap in a melted condition by compressing the foam sheet, applying the melted detergent composition, and allowing the sheet to expand to draw the composition into and disperse it throughout the cross-section of the foam structure.
Claim 24
Dependent Claim
21 words
A method according to claim 19 wherein the foam structure comprises polyester-urethane foam having 18 to 22 cells per linear centimeter.
Claim 25
Dependent Claim
36 words
A method according to claim 19 or 20 wherein the melted detergent composition is applied to the compressed sheet at a temperature of 45°-55° C. and after expansion the sheet is cooled to around 25° C.
Claim 26
Independent Claim
23 words
A method according to any of claims 19 or 20 wherein the ratio of detergent composition to substrate is between 2:1 and 10:1.
Claim 27
Independent Claim
24 words
A method according to any of claims 19 or 20 wherein the ratio of detergent composition to substrate is of the order of 4:1.
Claim 28
Independent Claim
30 words
A method according to any of claims 19 or 20 wherein said detergent composition comprises 90-10% by weight of non-ionic alcohol ethoxylate and 10-90% by weight of fatty acid soap.
Claim 29
Independent Claim
49 words
A method according to any of claims 19 or 20 wherein the impregnated sheet is cut into sections of desired size and provided with through openings which may be engaged by a user's fingers to enable the product to be maintained in an open or spread condition during use.
Claim 30
Dependent Claim
11 words
A method according to claim 25 wherein said openings comprise slits.
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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) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |