Patent US4822600A successfully refreshed from Google Patents.
US4822600A
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Infrared blocker
Assignee: Neutrogena LLC
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Filing: 1987-05-27
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Granted: 1989-04-18
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Expires: 2007-05-27
Abstract
Abstract A transparent or translucent composition for topical application to mammalian skin for protection from infrared rays comprising fumed silica admixed with conventional UV blockers as its principal active constituents.
Inventors
- 👤 Mitchell S. Wortzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:50
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
55 words
A method of protecting mammalian skin from infrared radiation having a wavelength of between 700 and 2600 nanometers comprising applying to such skin in need thereof a small but effective amount of a composition consisting of from about 1 to about 10 percent by weight of fumed silica and a non-toxic, non-irritating cosmetically acceptable carrier.
Claim 2
Independent Claim
55 words
A method of protecting mammalian skin from infrared radiation having a wavelength of between 700 and 2600 nanometers comprising applying to such skin in need thereof a small but effective amount of a composition consisting of from about 1 to about 10 percent by weight of fumed silica and a non-toxic, non-irritating cosmetically acceptable carrier.
Claim 3
Dependent Claim
13 words
A method according to claim 1 in which said carrier is an emulsion.
Claim 4
Dependent Claim
13 words
A method according to claim 1 in which said carrier is anhydrous solvent.
Claim 5
Dependent Claim
20 words
A method according to claim 1 in which said composition contains up to about 20% of UVA and UVB blockers.
Claim 6
Dependent Claim
20 words
A method according to claim 2 in which said composition contains up to about 20% of UVA and UVB blockers.
Claim 7
Dependent Claim
20 words
A method according to claim 3 in which said composition contains up to about 20% of UVA and UVB blockers.
Claim 8
Dependent Claim
15 words
A method according to claim 1 in which said carrier consists essentially of mineral oil.
Claim 9
Dependent Claim
20 words
A method according to claim 7 in which said composition contains up to about 20% of UVA and UVB blockers.
References Cited (Backward Citations)
US4119712A
Cited
US4514383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |