US4361157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of curling negroid hair without rollers
Assignee: Individual
•
Filing: 1980-10-20
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Granted: 1982-11-30
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Expires: 2000-10-20
Abstract
Abstract A method is disclosed for producing soft, gentle waves in negroid hair without use of curlers. Negroid hair, in the naturally kinky state is first treated with hair straightening chemicals to establish a standard reference time for carrying out a hair straightening treatment. With this reference time determined, it is then possible to treat this hair, or other similar hair in accordance with this process. An untreated negroid hair, in the naturally kinky state is wet thoroughly and hair straightening chemicals applied thereto and allowed to set for a period of 10-15 minutes, corresponding to about 70-90% of the time of exposure of the hair to the chemicals required for straightening the hair. The precise time allowed for the treatment depends on the coarseness of the hair. The hair is combed out and stretched in sections during the time of exposure to the hair-straightening chemicals. Next, the hair is shampooed using a shampoo containing chemicals for neutralizing the hair straightener. The hair is then rinsed and set and a hair softener applied. The hair is then allowed to dry without heat or blowing. The method produces soft gentle waves without use of curlers and is effective in curling hair in periods of time as short as 25-30 minutes.
Inventors
- 👤 Odie R. James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:46
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A45; A45D; A45D7/00; A45D7/06; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
222 words
A method of producing soft, relatively loose curls in naturally kinky hair without use of curlers or rollers comprising: wetting the hair thoroughly, applying thoroughly and uniformly to the hair a solution of a chemical reagent for straightening the hair, allowing said straightening reagent to remain on the hair for a predetermined period of about 70-90% of the time required for complete straightening of the hair, said predetermined period of time varying according to the degree of coarseness of the hair as determined empirically by measuring the time required for completely straightening fine or medium or coarse hair completely, said predetermined period of time being about 13 minutes for fine hair, about 15 minutes for medium hair, and about 18-20 minutes for coarse hair, combing the hair out straight during the time that said chemical hair-straightening reagent remains thereon, at the end of the aforementioned time, before the time that the hair is fully straightened, shampooing and rinsing the hair with a shampoo and rinse, at least one of which contains a chemical reagent for neutralizing said hair straightening reagent and setting said hair, the steps prior to this point taking about one-half hour, and allowing said hair to dry in the combed out state without application of forced heated air or the use of curlers or rollers to yield soft curls.
Claim 2
Independent Claim
222 words
A method of producing soft, relatively loose curls in naturally kinky hair without use of curlers or rollers comprising: wetting the hair thoroughly, applying thoroughly and uniformly to the hair a solution of a chemical reagent for straightening the hair, allowing said straightening reagent to remain on the hair for a predetermined period of about 70-90% of the time required for complete straightening of the hair, said predetermined period of time varying according to the degree of coarseness of the hair as determined empirically by measuring the time required for completely straightening fine or medium or coarse hair completely, said predetermined period of time being about 13 minutes for fine hair, about 15 minutes for medium hair, and about 18-20 minutes for coarse hair, combing the hair out straight during the time that said chemical hair-straightening reagent remains thereon, at the end of the aforementioned time, before the time that the hair is fully straightened, shampooing and rinsing the hair with a shampoo and rinse, at least one of which contains a chemical reagent for neutralizing said hair straightening reagent and setting said hair, the steps prior to this point taking about one-half hour, and allowing said hair to dry in the combed out state without application of forced heated air or the use of curlers or rollers to yield soft curls.
Claim 3
Dependent Claim
32 words
A method according to claim 1 in which said hair-straightening reagent contains sufficient sodium hydroxide to soften the hair and said neutralizing and setting reagent comprises an acid for neutralizing the same.
Claim 4
Dependent Claim
39 words
A method according to claim 1 in which said hair-straightening reagent contains a thiol-type hair waving or straightening compound and said neutralizing and setting reagent comprises an oxidizing material to oxidize and neutralize the effect of said thiol compound.
Claim 5
Dependent Claim
40 words
A method according to claim 1 in which the hair, after treatment with said hair-straightening reagent for said predetermined time, is shampooed with a surfactant solution containing a neutralizing reagent and then rinsed with a solution containing a setting reagent.
Claim 6
Dependent Claim
36 words
A method according to claim 4 in which said hair-straightening reagent comprises sodium hydroxide, said shampoo comprises a detergent or surfactant containing an acid, and said rinse/setting composition comprises a mixture of surfactants and an acid.
Claim 7
Dependent Claim
24 words
A method according to claim 3 in which: said thiol-type hair straightening reagent consists of a mercaptoamide, thioglycerol, thioglycolic acid, or a thioglycolate salt.
Claim 8
Dependent Claim
75 words
A method according to claim 5 in which: said hair-straightening reagent comprises water, petrolatum, cetyl alcohol, sodium hydroxide, oleyl alcohol, PEG-75, lanolin, OLETH-20, stearic acid, sodium lauryl, sulfate and hydrolized animal protein, said neutralizer/shampoo comprises water, ammonium lauryl sulfate, cocamide DEA, sodium chloride, cocoamidopropylamine oxide, citric acid, imidazolidinyl urea, disodium EDTA, methyl paraben and benzophenone-4, and said rinse/set comprises water, oleamide MIPA, isopropyl alcohol, ceteareth-20, quaternium-18, lauryl pyridinium chloride, methylparaben, acetic acid and 2-bromo-2-nitropropane-1, 3-diol.
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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) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |