Patent US4411886A successfully refreshed from Google Patents.
US4411886A
Expired / Lapsed
US
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Stabilized cosmetic compositions
Assignee: Richardson Vicks Inc
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Filing: 1980-02-11
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Granted: 1983-10-25
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Expires: 2000-02-11
Abstract
Abstract Stabilized cosmetic compositions containing as an active ingredient a compound represented by the formula ##STR1## wherein R is sodium, potassium or ammonium and x is 1 or R is aluminum and x is 3. The compounds of the above formula are stabilized in said compositions particularly against degradation due to light by the addition thereto of an effective amount of N-acetylcysteine.
Inventors
- 👤 Hans U. Hostettler
- 👤 Horst Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:16
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/447; A61K8/49; A61K8/4906; A61K8/4933; A61Q; A61Q19/00; A61Q19/002; A61Q5/00; A61Q5/006; A61Q5/12; Y; Y10; Y10S; Y10S424/00; Y10S424/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
A cosmetic preparation containing, as an active ingredient, an effective amount of a compound represented by the formula ##STR4## wherein R is sodium, potassium or ammonium and x is 1 or R is aluminum and x is 3 said preparation containing an amount of N-acetylcysteine sufficient to stabilize said compound against photochemical oxidation or decomposition, said N-acetylcysteine being present in from about 0.5 to about 8 times the amount of said compound.
Claim 2
Dependent Claim
72 words
A cosmetic preparation containing, as an active ingredient, an effective amount of a compound represented by the formula ##STR4## wherein R is sodium, potassium or ammonium and x is 1 or R is aluminum and x is 3 said preparation containing an amount of N-acetylcysteine sufficient to stabilize said compound against photochemical oxidation or decomposition, said N-acetylcysteine being present in from about 0.5 to about 8 times the amount of said compound.
Claim 3
Dependent Claim
25 words
A preparation in accordance with claim 1 wherein there is present an amount of N-acetylcysteine equal to about two times the amount of said compound.
Claim 4
Dependent Claim
13 words
A preparation in accordance with claim 1 wherein said compound is aluminum pyridinethione.
Claim 5
Dependent Claim
28 words
A preparation in accordance with claim 3 wherein said aluminum pyridinethione is present in an amount equal to from about 0.005% by weight to about 0.2% by weight.
Claim 6
Dependent Claim
28 words
A preparation in accordance with claim 3 wherein said aluminum pyridinethione is present in an amount equal to from about 0.05% by weight to about 0.2% by weight.
Claim 7
Dependent Claim
25 words
A preparation in accordance with claim 1 wherein said preparation is selected from the group consisting of anti-dandruff hair lotions, after-shave emulsion and skin-care cream.
Claim 8
Independent Claim
84 words
A method for the stabilization of a cosmetic preparation which contains, as an active ingredient, an effective amount of a compound represented by the formula ##STR5## wherein R is sodium, potassium or ammonium and x is 1 or R is aluminum and x is 3 which comprises adding to said preparation an amount of N-acetylcysteine sufficient to stabilize said compound against photochemical oxidation or decomposition said N-acetylcysteine being added in an amount from about 0.5 to about 8 times the amount of said compound.
Claim 9
Independent Claim
84 words
A method for the stabilization of a cosmetic preparation which contains, as an active ingredient, an effective amount of a compound represented by the formula ##STR5## wherein R is sodium, potassium or ammonium and x is 1 or R is aluminum and x is 3 which comprises adding to said preparation an amount of N-acetylcysteine sufficient to stabilize said compound against photochemical oxidation or decomposition said N-acetylcysteine being added in an amount from about 0.5 to about 8 times the amount of said compound.
Claim 10
Dependent Claim
26 words
A method in accordance with claim 7 wherein the amount of N-acetylcysteine added to said preparation comprises about two times the amount of said compound present.
Claim 11
Dependent Claim
13 words
A method in accordance with claim 7 wherein said compound is aluminum pyridinethione.
Claim 12
Dependent Claim
31 words
A method in accordance with claim 10 wherein said aluminum pyridinethione is present in said preparation in an amount equal to from about 0.005% by weight to about 0.2% by weight.
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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) | 1986-10-24 | 1987-04-25 | 1987-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-24 | 1991-04-25 | 1991-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-24 | 1995-04-25 | 1995-10-25 | $7700.00 | Window Closed / Lapsed |