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US4295985A
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US
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Method of removal of chlorine retained by human skin and hair after exposure to chlorinated water, and soap and shampoo compositions adapted to effect said removal
Assignee: Signal Investment and Management Co
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Filing: 1980-05-01
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Granted: 1981-10-20
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Expires: 2000-05-01
Abstract
Abstract This disclosure deals with removing rapidly chlorine retained by the skin and hair of, for example, swimmers, after exposure to chlorinated water by means of a stoichiometric excess of a suitable reducing agent, such as an alkali thiosulfate and the like in aqueous solution, and with toilet soaps and shampoos comprising said agent adapted to effect said removal.
Inventors
- 👤 Henry G. Petrow
- 👤 Mark L. Weissman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/02; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/23; A61K8/30; A61K8/40; A61K8/42; C; C11; C11D; C11D9/00; C11D9/04; C11D9/06; C11D9/08; C11D9/10; C11D9/22; C11D9/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
106 words
A toilet soap composition for cleansing and removing retained chlorine from human skin and hair after immersion in chlorine containing waters, said composition consisting essentially of a chemically stable, uniform mixture of a toilet soap and a water soluble, non-toxic and harmless-to-the skin chlorine-reducing agent which is a mixture of from about 50 to about 30% by weight urea and from about 50 to about 70% by weight of an alkali metal thiosulfate, said agent being present in said mixture in amount between at least about 2% and less than about 15% by weight of said soap in said mixture and being compatible with said soap.
Claim 2
Dependent Claim
106 words
A toilet soap composition for cleansing and removing retained chlorine from human skin and hair after immersion in chlorine containing waters, said composition consisting essentially of a chemically stable, uniform mixture of a toilet soap and a water soluble, non-toxic and harmless-to-the skin chlorine-reducing agent which is a mixture of from about 50 to about 30% by weight urea and from about 50 to about 70% by weight of an alkali metal thiosulfate, said agent being present in said mixture in amount between at least about 2% and less than about 15% by weight of said soap in said mixture and being compatible with said soap.
Claim 3
Dependent Claim
92 words
A liquid aqueous shampoo composition for cleansing and removing retained chlorine from human skin and hair after immersion in chlorine containing waters, said composition consisting essentially of a chemically stable, uniform mixture of a detergent and a water soluble, non-toxic and harmless-to-skin chlorine-reducing agent which is selected from the group consisting of urea and mixtures of urea and an alkali metal thiosulfate, said agent being present in amount between 0.4% and 6% of said liquid composition and about 2% to 15% of said contained detergent and being compatible with said shampoo compositions.
Claim 4
Dependent Claim
92 words
A liquid aqueous shampoo composition for cleansing and removing retained chlorine from human skin and hair after immersion in chlorine containing waters, said composition consisting essentially of a chemically stable, uniform mixture of a detergent and a water soluble, non-toxic and harmless-to-skin chlorine-reducing agent which is selected from the group consisting of urea and mixtures of urea and an alkali metal thiosulfate, said agent being present in amount between 0.4% and 6% of said liquid composition and about 2% to 15% of said contained detergent and being compatible with said shampoo compositions.
Claim 5
Independent Claim
84 words
A method of rapidly removing chlorine from human skin and hair after immersion in chlorine containing waters, said method comprising contacting said skin and hair with a toilet soap or detergent composition and water, said composition comprising a chemically stable uniform mixture of toilet soap or detergent and a water-soluble, non-toxic and harmless-to-the skin chlorine-reducing agent, said agent being provided in amount at least three times the stoichiometric amount required to reduce said chlorine to chloride and being compatible with said soap or detergent.
Claim 6
Independent Claim
84 words
A method of rapidly removing chlorine from human skin and hair after immersion in chlorine containing waters, said method comprising contacting said skin and hair with a toilet soap or detergent composition and water, said composition comprising a chemically stable uniform mixture of toilet soap or detergent and a water-soluble, non-toxic and harmless-to-the skin chlorine-reducing agent, said agent being provided in amount at least three times the stoichiometric amount required to reduce said chlorine to chloride and being compatible with said soap or detergent.
Claim 7
Dependent Claim
14 words
The method of claim 3 wherein said mixture is provided as an aqueous solution.
Claim 8
Dependent Claim
18 words
A method in accordance with the method of claim 3 wherein said chlorine reducing agent is sodium thiosulfate.
Claim 9
Dependent Claim
32 words
A method in accordance with the method of claim 3 wherein said detergent composition or soap is in the form of a shampoo composition and said chlorine reducing agent is sodium thiosulfate.
Claim 10
Dependent Claim
24 words
A method in accordance with the method of claim 3 wherein said chlorine-reducing agent is a mixture of an alkali metal thiosulfate and urea.
Claim 11
Dependent Claim
16 words
A method in accordance with the method of claim 3 wherein said chlorine-reducing agent is urea.
Claim 12
Dependent Claim
44 words
A method in accordance with the method of claim 3 wherein said skin and hair is contacted with a toilet soap with said chlorine reducing agent being present in an amount of between about 2 and less than 15% by weight of said soap.
Claim 13
Dependent Claim
35 words
A method in accordance with the method of claim 9 wherein said chlorine reducing agent is selected from the group consisting of alkali metal thiosulfates, alkali metal nitrites, alkali metal sulfites, ascorbic acid and urea.
References Cited (Backward Citations)
US3808194A
Cited
US3666690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |