US3865546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depilatory composition and method of use
Assignee: Oscient Pharmaceuticals Corp
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Filing: 1972-09-22
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Granted: 1975-02-11
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Expires: 1992-09-22
Abstract
Abstract A means and method of removing hair from the skin of the body comprises applying a 1,4 dimercapto -2,3 butane diol to the hair at the skin at a pH of from 7 to 13. The 1,4 dimercapto -2,3 butane diol or substituted product thereof is permitted to react with the hair until depilatory action is carried out after which the hair and reaction products are removed from the skin. Preferably calcium ions are used in conjunction with the 1,4 dimercapto -2,3 butane diol or substituted product thereof to increase the speed of hair removal.
Inventors
- 👤 John C Zemlin
- 👤 Katherine A Bowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:25
CPC Classifications
A; A61; A61Q; A61Q9/00; A61Q9/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
28 words
A METHOD OF REMOVING HAIR FROM THE SKIN OF THE BODY COMPRISING, APPLYING TO THE HAIR AT THE SKIN AN AQUEOUS SOLUTION OF A COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
28 words
A METHOD OF REMOVING HAIR FROM THE SKIN OF THE BODY COMPRISING, APPLYING TO THE HAIR AT THE SKIN AN AQUEOUS SOLUTION OF A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
19 words
A method in accordance with the method of claim 1 wherein said compound is 1,4 dimercapto -2,3 butane diol.
Claim 4
Dependent Claim
30 words
A method in accordance with the method of claim 1 wherein each said water soluble, polar group is selected from the group consisting of -OH, -NH2, -PO3H2, -COOH and -SO3H.
Claim 5
Dependent Claim
38 words
A method in accordance with the method of claim 1 wherein in addition said solution contains calcium ions in an amount sufficient to obtain rapid depilatory reactions at a pH in the range of from 7 to 13.
Claim 6
Dependent Claim
35 words
A method in accordance with the method of claim 1 wherein said solution comprises calcium hydroxide in an amount sufficient to form the pH of the solution to a value of from 8 to 12.
Claim 7
Dependent Claim
38 words
A method in accordance with the method of claim 2 wherein in addition said solution contains calcium ions in an amount sufficient to obtain rapid depilatory reactions at a pH in the range of from 7 to 13.
Claim 8
Dependent Claim
35 words
A method in accordance with the method of claim 2 wherein said solution comprises calcium hydroxide in an amount sufficient to form the pH of the solution to a value of from 8 to 12.
Claim 9
Dependent Claim
26 words
A method in accordance with the method of claim 2 wherein said solution is permitted to react for a period of from 2 to 15 minutes.
Claim 10
Dependent Claim
32 words
An aqueous depilatory solution for use in removing hair from human skin, said solution comprising, an effective amount of a compatible swelling agent and wetting agent, and a compound having the formula
Claim 11
Dependent Claim
32 words
An aqueous depilatory solution for use in removing hair from human skin, said solution comprising, an effective amount of a compatible swelling agent and wetting agent, and a compound having the formula
Claim 12
Dependent Claim
18 words
An aqueous depilatory solution in accordance with claim 9 wherein said compound is 1,4 dimercapto -2,3 butane diol.
Claim 13
Dependent Claim
16 words
An aqueous depilatory solution in accordance with claim 10 wherein said swelling agent is calcium hydroxide.
Claim 14
Dependent Claim
34 words
An aqueous depilatory solution in accordance with claim 9 and further comprising calcium ions in an amount sufficient to Obtain rapid depilatory reactions at a pH in the range of from 7 to 13.
Claim 15
Dependent Claim
23 words
The aqueous depilatory composition of claim 10 converted into a paste consistency by incorporating therein an effective amount of a compatible thickening agent.
References Cited (Backward Citations)
US3459198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |