Patent US4602648A successfully refreshed from Google Patents.
US4602648A
Expired / Lapsed
US
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Pre-shampoo normalizer for a hair straightening system
Assignee: Amethyst Investment Group Inc
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Filing: 1984-10-30
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Granted: 1986-07-29
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Expires: 2004-10-30
Abstract
Abstract An improved hair straightening system based upon a pre-shampoo normalizer is disclosed. The improved system provides for rinsing the hair after the straightening composition has been applied to the hair for a sufficiently long period of time and then applying the pre-shampoo normalizer to the hair before the shampoo step. The pre-shampoo normalizer preferably includes between about 0.25 and about 10% by weight of a medium molecular weight cationic polymer, between about 2 and about 20% by weight of a hydrolyzed animal protein having a molecular weight of between about 200 and about 15,000 and less than about 10% by weight of a surface active agent. The pre-shampoo normalizer should also be adjusted to a pH of between about 2.5 and about 7 by using a conventional acid composition.
Inventors
- 👤 Ali N. Syed
- 👤 Kevin W. Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:29
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/65; A61K8/40; A61K8/41; A61K8/72; A61K8/73; A61K8/731; A61K8/81; A61K8/8141; A61K8/8152; A61Q; A61Q5/00; A61Q5/04; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5426
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
123 words
A method of straightening hair, comprising the following steps in combination: (a) applying to the hair a straightening composition with chemical properties sufficient to change the cystine bonds in the hair keratin to lanthionine bonds; (b) rinsing the hair to flush away a substantial portion of the straightening composition; (c) applying a pre-shampoo normalizer to the hair, said pre-shampoo normalizer having a pH of between 2.5 and 7 and comprising at least one component which is substantive to hair selected from the group consisting of a cationic species and a protein of molecular weight between about 200 and about 15,000; (d) shampooing the hair to remove any residual straightening composition that may remain after the rinsing step as well as excess pre-shampoo normalizer.
Claim 2
Independent Claim
123 words
A method of straightening hair, comprising the following steps in combination: (a) applying to the hair a straightening composition with chemical properties sufficient to change the cystine bonds in the hair keratin to lanthionine bonds; (b) rinsing the hair to flush away a substantial portion of the straightening composition; (c) applying a pre-shampoo normalizer to the hair, said pre-shampoo normalizer having a pH of between 2.5 and 7 and comprising at least one component which is substantive to hair selected from the group consisting of a cationic species and a protein of molecular weight between about 200 and about 15,000; (d) shampooing the hair to remove any residual straightening composition that may remain after the rinsing step as well as excess pre-shampoo normalizer.
Claim 3
Dependent Claim
63 words
The method of claim 1 wherein the pre-shampoo normalizer comprises (i) between about 0.25 and about 10% by weight of a medium molecular weight cationic polymer; (ii) between about 2 and about 20% by weight of hydrolyzed animal protein having a molecular weight between about 200 and about 15,000; and (iii) less than about 10 percent by weight of a surface active compound.
Claim 4
Dependent Claim
23 words
The method of claim 2 wherein the cationic polymer comprises between about 2 and about 4 percent by weight of the pre-shampoo normalizer.
Claim 5
Dependent Claim
36 words
The method of claim 2 wherein the hydrolyzed animal protein comprises between about 5 and about 10 percent by weight of the pre-shampoo normalizer and has a molecular weight of between about 4000 and about 5000.
Claim 6
Dependent Claim
20 words
The method of claim 2 wherein the surface active compound comprises less than about 7.0 percent of the pre-shampoo normalizer.
Claim 7
Dependent Claim
19 words
The method of claim 2 wherein the pre-shampoo normalizer has a pH of between about 4 and about 6.
Claim 8
Dependent Claim
85 words
The method of claim 2 wherein (i) the cationic polymer comprises between about 2 and about 4 percent by weight of the pre-shampoo normalizer; (ii) the hydrolyzed animal protein has a molecular weight of between about 4000 and about 5000 and comprises between about 5 and about 10 percent by weight of the pre-shampoo normalizer; (iii) the surface active compound comprises less than about 5.0 percent of the pre-shampoo normalizer; and (iv) the pre-shampoo normalizer has a pH of between about 4 and about 6.
Claim 9
Dependent Claim
139 words
In a method for straightening hair by applying to the hair a straightening composition with chemical reducing properties sufficient to change the cystine bonds in the hair keratin, then shampooing the hair to remove at least a major portion of the straightening composition from the hair, the improvement comprising the steps of initially rinsing the hair to flush away a substantial portion of the straightening composition, then applying a pre-shampoo normalizer, said rinsing and applying steps to be performed after the straightening composition has been applied to the hair but before the hair has been shampooed, said pre-shampoo normalizer having a pH of between 2.5 and 7 and comprising at least one component which is substantive to hair selected from the group consisting of a cationic species and a protein of molecular weight between about 200 and about 15,000.
Claim 10
Dependent Claim
139 words
In a method for straightening hair by applying to the hair a straightening composition with chemical reducing properties sufficient to change the cystine bonds in the hair keratin, then shampooing the hair to remove at least a major portion of the straightening composition from the hair, the improvement comprising the steps of initially rinsing the hair to flush away a substantial portion of the straightening composition, then applying a pre-shampoo normalizer, said rinsing and applying steps to be performed after the straightening composition has been applied to the hair but before the hair has been shampooed, said pre-shampoo normalizer having a pH of between 2.5 and 7 and comprising at least one component which is substantive to hair selected from the group consisting of a cationic species and a protein of molecular weight between about 200 and about 15,000.
Claim 11
Dependent Claim
63 words
The method of claim 8 wherein the pre-shampoo normalizer comprises (i) between about 0.25 and about 10% by weight of a medium molecular weight cationic polymer; (ii) between about 2 and about 20% by weight of hydrolyzed animal protein having a molecular weight between about 200 and about 15,000; and (iii) less than about 10 percent by weight of a surface active compound.
Claim 12
Dependent Claim
23 words
The method of claim 9 wherein the cationic polymer comprises between about 2 and about 4 percent by weight of the pre-shampoo normalizer.
Claim 13
Dependent Claim
36 words
The method of claim 9 wherein the hydrolyzed animal protein comprises between about 5 and about 10 percent by weight of the pre-shampoo normalizer and has a molecular weight of between about 4000 and about 5000.
Claim 14
Dependent Claim
20 words
The method of claim 9 wherein the surface active compound comprises less than about 7.0 percent of the pre-shampoo normalizer.
Claim 15
Dependent Claim
19 words
The method of claim 9 wherein the pre-shampoo normalizer has a pH of between about 4 and about 6.
Claim 16
Dependent Claim
85 words
The method of claim 9 wherein (i) the cationic polymer comprises between about 2 and about 4 percent by weight of the pre-shampoo normalizer; (ii) the hydrolyzed animal protein has a molecular weight of between about 4000 and about 5000 and comprises between about 5 and about 10 percent by weight of the pre-shampoo normalizer; (iii) the surface active compound comprises less than about 5.0 percent of the pre-shampoo normalizer; and (iv) the pre-shampoo normalizer has a pH of between about 4 and about 6.
Claim 17
Dependent Claim
71 words
A pre-shampoo normalizer composition for maintaining and improving hair quality during straightening treatments comprising, in combination: (i) between about 0.25 and about 10.0 percent by weight of a medium molecular weight cationic polymer; (ii) between about 2.0 and about 20.0 percent by weight of hydrolyzed protein having a molecular weight of between about 200 and about 15,000; and (iii) less than about 10 percent by weight of a surface active compound.
Claim 18
Dependent Claim
71 words
A pre-shampoo normalizer composition for maintaining and improving hair quality during straightening treatments comprising, in combination: (i) between about 0.25 and about 10.0 percent by weight of a medium molecular weight cationic polymer; (ii) between about 2.0 and about 20.0 percent by weight of hydrolyzed protein having a molecular weight of between about 200 and about 15,000; and (iii) less than about 10 percent by weight of a surface active compound.
Claim 19
Dependent Claim
23 words
The composition of claim 15 wherein the cationic polymer comprises between about 2 and about 4 percent by weight of the pre-shampoo normalizer.
Claim 20
Dependent Claim
34 words
The composition of claim 15 wherein the hydrolyzed protein comprises between about 5 and about 10 percent by weight of a hydrolyzed animal protein of molecular weight of between about 4000 and about 5000.
Claim 21
Dependent Claim
20 words
The composition of claim 15 wherein the surface active compound comprises less than about 7.0 percent of the pre-shampoo normalizer.
Claim 22
Dependent Claim
19 words
The composition of claim 15 wherein the pre-shampoo normalizer has a pH of between about 4 and about 6.
Claim 23
Dependent Claim
85 words
The composition of claim 15 wherein (i) the cationic polymer comprises between about 2 and about 4 percent by weight of the pre-shampoo normalizer; (ii) the hydrolyzed animal protein has a molecular weight of between about 4000 and about 5000 and comprises between about 5 and about 10 percent by weight of the pre-shampoo normalizer; (iii) the surface active compound comprises less than about 5.0 percent of the pre-shampoo normalizer; and (iv) the pre-shampoo normalizer has a pH of between about 4 and about 6.
Claim 24
Dependent Claim
25 words
The composition of claim 20 in which the cationic polymer is ethanaminium-N,N,N-trimethyl-2[(2-methyl-1-oxo-2-propenyl)oxy]-, methylsulfate homopolymer of molecular weight between about one million and about two million.
Claim 25
Dependent Claim
119 words
A pre-shampoo normalizer composition for maintaining and improving hair quality during straightening treatments comprising, in combination about 0.25% by weight of methyl p-hydroxybenzoate; about 1% by weight of N-(2-hydroxyethyl)-N-acetyl ethanolamine; about 2% by weight of an acid species; about 1% by weight of polyethylene glycol (60) lanolin; about 3% by weight of ethanaminium, N,N,N-trimethyl-2[(2-methyl-1-oxo-2-propenyl)oxy]-, methylsulfate, homopolymer; about 0.5% by weight of panthenol; about 0.5% by weight of imidazolidinyl urea; about 1% by weight of aloe vera; about 7.5% by weight of hydrolyzed animal protein; about 0.25% by weight of N-(3-chloroallyl) hexaminium chloride; about 0.75% by weight of hydroxyethyl cellulose; about 4% by weight of N,N',N'-tris(2-hydroxyethyl)-N-tallow-1,3-diaminopropane; about 4% by weight of 3-[(3-cocamidopropyl)dimethylammonio] 2-hydroxypropane sulfonate; and a sufficient quantity of water.
Claim 26
Dependent Claim
119 words
A pre-shampoo normalizer composition for maintaining and improving hair quality during straightening treatments comprising, in combination about 0.25% by weight of methyl p-hydroxybenzoate; about 1% by weight of N-(2-hydroxyethyl)-N-acetyl ethanolamine; about 2% by weight of an acid species; about 1% by weight of polyethylene glycol (60) lanolin; about 3% by weight of ethanaminium, N,N,N-trimethyl-2[(2-methyl-1-oxo-2-propenyl)oxy]-, methylsulfate, homopolymer; about 0.5% by weight of panthenol; about 0.5% by weight of imidazolidinyl urea; about 1% by weight of aloe vera; about 7.5% by weight of hydrolyzed animal protein; about 0.25% by weight of N-(3-chloroallyl) hexaminium chloride; about 0.75% by weight of hydroxyethyl cellulose; about 4% by weight of N,N',N'-tris(2-hydroxyethyl)-N-tallow-1,3-diaminopropane; about 4% by weight of 3-[(3-cocamidopropyl)dimethylammonio] 2-hydroxypropane sulfonate; and a sufficient quantity of water.
References Cited (Backward Citations)
US3313734A
Cited
US3761417A
Cited
US3912808A
Cited
US3897348A
Cited
US3986825A
Cited
US4027008A
Cited
US4314572A
Cited
US4324263A
Cited
US4373540A
Cited
US4175572A
Cited
US4228810A
Cited
US4237910A
Cited
US4390033A
Cited
US4416297A
Cited
US4416296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-28 | 1990-01-27 | 1990-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-28 | 1994-01-27 | 1994-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-28 | 1998-01-27 | 1998-07-29 | $7700.00 | Window Closed / Lapsed |