US4777041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrinkle treatment formulation
Assignee: Revlon Inc
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Filing: 1986-08-07
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Granted: 1988-10-11
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Expires: 2006-08-07
Abstract
Abstract A wrinkle treatment formulation is provided which is in the form of a gel formed of at least 95% by weight of a gelable hydrophilic polyurethane polymer base and a precipitated silica thickener gelling agent. Upon brushing the above-described gel formulation on wrinkled skin, the gel fills up wrinkles and dries to impart to so-treated skin a smooth substantially wrinkle-free appearance.
Inventors
- 👤 Clara Mercado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:10
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/08; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/19; A61K8/25; A61K8/72; A61K8/84; A61K8/87; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A method for treating wrinkled skin which comprises applying to the skin a gel formulation comprising a gelable hydrophilic polyurethane polymer base present in an amount within the range of from about 95 to about 99.7% by weight and a silica gelling agent having a surface area of within the range of from about 100 to about 200 meters 2 /gram present in an amount within the range of from about 0.3 to about 5% by weight, and allowing said gel formulation to dry on the skin to thereby fill up lined areas forming the wrinkles.
Claim 2
Independent Claim
96 words
A method for treating wrinkled skin which comprises applying to the skin a gel formulation comprising a gelable hydrophilic polyurethane polymer base present in an amount within the range of from about 95 to about 99.7% by weight and a silica gelling agent having a surface area of within the range of from about 100 to about 200 meters 2 /gram present in an amount within the range of from about 0.3 to about 5% by weight, and allowing said gel formulation to dry on the skin to thereby fill up lined areas forming the wrinkles.
Claim 3
Dependent Claim
40 words
The method according to claim 1 wherein the polyurethane polymer base includes a solid polyurethane polymer and an aqueous alcoholic solvent therefore, the weight ratio of alcohol to water being within the range of from about 30:1 to about 10:1.
Claim 4
Dependent Claim
20 words
The method according to claim 1 wherein the silica gelling agent has an average particle size of about 21 nanometers.
Claim 5
Dependent Claim
26 words
The method according to claim 1 wherein the gel formulation comprises about 99.2% by weight polyurethane polymer base and about 0.8% by weight silica gelling agent.
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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |