US4814351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scalp treatment
Assignee: Redken Laboratories Inc
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Filing: 1987-06-26
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Granted: 1989-03-21
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Expires: 2007-06-26
Abstract
Abstract A scalp treatment for reducing average daily hair loss periodically applies to the scalp a composition containing an active chelating agent sufficient to chelate at least 0.3 milligrams of divalent calcium ion per milliliter of the composition and leaving the chelating agent in contact with the scalp for at least eight hours. Particularly preferred chelating agents comprise ethylene diamine tetraacetic acid, citric acid, and soluble salts thereof.
Inventors
- 👤 Roger A. Mathews
- 👤 David W. Cannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:03
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61K8/40; A61K8/44; A61Q; A61Q5/00; A61K2800/00; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising at least daily distributing onto the scalp of the person a composition comprising ethylene diamine tetraacetic acid or salt thereof in the range of from 0.1 to 1.0 percent by weight, and leaving the chelating agent in contact with the scalp for at least eight hours.
Claim 2
Independent Claim
67 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising at least daily distributing onto the scalp of the person a composition comprising ethylene diamine tetraacetic acid or salt thereof in the range of from 0.1 to 1.0 percent by weight, and leaving the chelating agent in contact with the scalp for at least eight hours.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein the ethylene diamine tetraacetic acid or salt thereof is present in a concentration of 0.2 percent by weight.
Claim 4
Dependent Claim
41 words
A method as recited in claim 1 wherein the composition comprises hair conditioners in a concentration up to 3 percent by weight, surfactant in a concentration of up to 3 percent by weight, and sufficient preservative to inhibit growth of microorganisms.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein the composition has a pH in the range of from 4 to 7.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein the composition has a pH in the range of from 5 to 5.5.
Claim 7
Independent Claim
90 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising at least daily distributing onto the scalp of the person a composition comprising an effective amount of active chelating agent selected from the group consisting of ethylene diamine tetraacetic acid, citric acid, and pharmaceutically acceptable soluble salts thereof sufficient to chelate at least 0.3 milligrams of divalent calcium ion per milliliter of the composition and leaving the chelating agent in contact with the scalp for at least eight hours.
Claim 8
Independent Claim
90 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising at least daily distributing onto the scalp of the person a composition comprising an effective amount of active chelating agent selected from the group consisting of ethylene diamine tetraacetic acid, citric acid, and pharmaceutically acceptable soluble salts thereof sufficient to chelate at least 0.3 milligrams of divalent calcium ion per milliliter of the composition and leaving the chelating agent in contact with the scalp for at least eight hours.
Claim 9
Independent Claim
66 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising periodically distributing onto the scalp of the person a composition consisting essentially of ethylene diamine tetraacetic acid or salt thereof in the range of from 0.1 to 1 percent by weight, and leaving the composition in contact with the scalp of at least eight hours.
Claim 10
Independent Claim
66 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising periodically distributing onto the scalp of the person a composition consisting essentially of ethylene diamine tetraacetic acid or salt thereof in the range of from 0.1 to 1 percent by weight, and leaving the composition in contact with the scalp of at least eight hours.
Claim 11
Dependent Claim
24 words
The method of claim 7 wherein the ethylene diamine tetraacetic acid or salt thereof is present in a concentration of 0.2 percent by weight.
Claim 12
Dependent Claim
39 words
The method fo claim 7 wherein the composition comprises hair conditioners in a concentration up to 3 percent by weight, surfactant in a concentration of up to 3 percent by weight, and sufficient preservative to inhibit growth of microorganisms.
Claim 13
Dependent Claim
19 words
The method of claim 7 wherein the composition has a pH in the range of from 4 to 7.
Claim 14
Independent Claim
85 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising periodically distributing onto the scalp of the person a composition consisting essentially of an active chelating agent selected from the group consisting of ethylene diamine tetraacetic acid, citric acid, and pharmaeceutically acceptable soluble salts thereof sufficient ot chelate at least 0.3 milligrams of divalent calcium per milliliter of the composition, and leaving the composition in contact with the scalp for at least eight hours.
Claim 15
Independent Claim
85 words
A method for reducing the rate of the average normal daily hair loss or shedding of hair by a person comprising periodically distributing onto the scalp of the person a composition consisting essentially of an active chelating agent selected from the group consisting of ethylene diamine tetraacetic acid, citric acid, and pharmaeceutically acceptable soluble salts thereof sufficient ot chelate at least 0.3 milligrams of divalent calcium per milliliter of the composition, and leaving the composition in contact with the scalp for at least eight hours.
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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) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |