US3860700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain copolymers and their use in cosmetics
Assignee: L'Oréal SA
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Filing: 1971-07-21
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Granted: 1975-01-14
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Expires: 1991-07-21
Abstract
Abstract Copolymers formed from an unsaturated dicarboxylic acid anhydride and an unsaturated monomer having a lipophile chain having a molecular weight of 4,000-100,000 are usefully employed to produce a water-in-oil emulsion which can be incorporated into cosmetic compositions.
Inventors
- 👤 Andre Viout
- 👤 David Esanu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/06; A61K8/064; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; A61Q; A61Q19/00; C; C08; C08F; C08F216/00; C08F216/12; C08F216/14; C08F216/16; C08F216/18; C08F218/00; C08F218/02; C08F218/04; C08F218/10; C08F22/00; C08F22/04; C08F220/00; C08F220/02; C08F220/08; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1812; C08F220/40; C08F220/52; C08F220/54; C08F222/00; C08F222/04; C08F222/06; C08F226/00; C08F226/02; C08F228/00; C08F228/02; C08F228/04; C08F8/00; C08F8/44; A61Q1/00; A61Q1/02; A61Q1/08; A61Q3/00; C08F2810/00; C08F2810/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
The water-in-oil emulsion of claim 1 wherein said copolymer is in the form of the magnesium salt thereof.
Claim 2
Dependent Claim
53 words
A cosmetic water-in-oil emulsion useful in creams for application to the skin and nails comprising in amounts effective to provide said water-in-oil emulsion 30-60 weight percent water, 18-60 weight percent of an oil phase which is readily absorbable by the skin and 6.5-14 weight percent, as emulsifier, of a copolymer having the formula
Claim 3
Dependent Claim
18 words
The water-in-oil emulsion of claim 3 wherein said copolymer is in the form of the magnesium salt thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |