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US4820508A
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Skin protective composition
Assignee: Neutrogena LLC
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Filing: 1987-06-23
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Granted: 1989-04-11
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Expires: 2007-06-23
Abstract
Abstract A skin protective composition for topical application to mammalian skin for protection from infrared radiation containing titanium dioxide and mica or coated mica as its principal active reagents.
Inventors
- 👤 Mitchell S. Wortzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:32
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26; A61K8/29; A61K2800/00; A61K2800/40; A61K2800/59
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
A method of protecting mammalian skin from the harmful effects of solar infrared radiation having a wave length of from 700-2600 nanometers comprising applying to skin in need thereof a preparation containing, in weight percent, from about 0.5 to about 4 percent titanium dioxide and from about 0.5 to about 5 percent mica, each dispersed in a nontoxic, non-irritating cosmetically acceptable carrier.
Claim 2
Independent Claim
62 words
A method of protecting mammalian skin from the harmful effects of solar infrared radiation having a wave length of from 700-2600 nanometers comprising applying to skin in need thereof a preparation containing, in weight percent, from about 0.5 to about 4 percent titanium dioxide and from about 0.5 to about 5 percent mica, each dispersed in a nontoxic, non-irritating cosmetically acceptable carrier.
Claim 3
Dependent Claim
17 words
A method of protecting mammalian skin according to claim 1 in which said carrier is an emulsion.
Claim 4
Dependent Claim
18 words
A method of protecting mammalian skin according to claim 1 in which said carrier is an anhydrous solvent.
Claim 5
Dependent Claim
18 words
A method of protecting mammalian skin according to claim 1 in which said carrier is a mineral oil.
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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |