Patent US4894222A successfully refreshed from Google Patents.
US4894222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproof sunscreen
Assignee: Neutrogena LLC
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Filing: 1988-04-04
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Granted: 1990-01-16
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Expires: 2008-04-04
Abstract
Abstract A skin protective composition for topical application to mammalian skin for protection from water washing containing C 18 -C 36 aliphatic wax and anhydrous starch as its principal active waterproofing agents disposed in a water-free carrier.
Inventors
- 👤 Peter Matravers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:01
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61K8/732; A61K8/30; A61K8/33; A61K8/37; A61K8/375; A61Q; A61Q17/00; A61Q17/04; A61Q19/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
50 words
A composition of matter for waterproofing mammalian skin containing in weight percent from about 1 to about 10 percent C 18 -C 36 saturated synthetic fatty acid wax, from 3 to about 30 percent anhydrous hydrophobic starch dispersed in about 60 to about 96 percent of pharmacologically acceptable water-free carrier.
Claim 2
Dependent Claim
50 words
A composition of matter for waterproofing mammalian skin containing in weight percent from about 1 to about 10 percent C 18 -C 36 saturated synthetic fatty acid wax, from 3 to about 30 percent anhydrous hydrophobic starch dispersed in about 60 to about 96 percent of pharmacologically acceptable water-free carrier.
Claim 3
Dependent Claim
22 words
A composition of matter according to claim 1 in which said carrier is a mineral or vegetable oil or aliphatic/branched chain ester.
Claim 4
Dependent Claim
16 words
A composition of matter according to claim 1 in which said carrier is an anhydrous solvent.
Claim 5
Dependent Claim
20 words
A composition of matter according to claim 1 containing up to about 20% by weight of UV-A and UV-B blockers.
Claim 6
Dependent Claim
20 words
A composition of matter according to claim 2 containing up to about 20% by weight of UV-A and UV-B blockers.
Claim 7
Dependent Claim
18 words
A composition of matter according to claim 3 containing up to about 20% of UV-A and UV-B blockers.
Claim 8
Independent Claim
82 words
A method of protecting and waterproofing mammalian skin from the harmful effects of solar radiation having a wave length of from 700-2600 nanometers comprising applying to such mammalian skin an effective amount of a preparation containing, in weight percent, from about 1 to about 10 percent C 18 -C 36 saturated synthetic fatty acid wax and from about 1 to about 30 percent anhydrous hydrophobic starch, each being dispersed in a pharmacologically acceptable water-free carrier and admixed with an ultraviolet blocking agent.
Claim 9
Independent Claim
82 words
A method of protecting and waterproofing mammalian skin from the harmful effects of solar radiation having a wave length of from 700-2600 nanometers comprising applying to such mammalian skin an effective amount of a preparation containing, in weight percent, from about 1 to about 10 percent C 18 -C 36 saturated synthetic fatty acid wax and from about 1 to about 30 percent anhydrous hydrophobic starch, each being dispersed in a pharmacologically acceptable water-free carrier and admixed with an ultraviolet blocking agent.
Claim 10
Dependent Claim
18 words
A method of protecting mammalian skin according to claim 7 in which said carrier is an anhydrous ointment.
Claim 11
Dependent Claim
18 words
A method of protecting mammalian skin according to claim 7 in which said carrier is an anhydrous solvent.
Claim 12
Dependent Claim
17 words
A method of protecting mammalian skin according to claim 7 in which said carrier is an oil.
Claim 13
Independent Claim
85 words
A method of protecting mammalian skin from the harmful effects of solar radiation having a wave length of from 700 up to 2600 nanometers comprising applying to such mammalian skin an effective amount of a preparation containing in weight percent, from about 1 to about 10 percent C 18 -C 36 saturated synthetic fatty acid wax, from about 1 to about 30 percent anhydrous anhydrous starch, from about 1 to about 20 percent UV-A and UV-B blockers, each dispersed in a pharmacologically acceptable water-free carrier.
Claim 14
Independent Claim
85 words
A method of protecting mammalian skin from the harmful effects of solar radiation having a wave length of from 700 up to 2600 nanometers comprising applying to such mammalian skin an effective amount of a preparation containing in weight percent, from about 1 to about 10 percent C 18 -C 36 saturated synthetic fatty acid wax, from about 1 to about 30 percent anhydrous anhydrous starch, from about 1 to about 20 percent UV-A and UV-B blockers, each dispersed in a pharmacologically acceptable water-free carrier.
Claim 15
Dependent Claim
17 words
A method of protecting mammalian skin according to claim 11 in which said carrier is a solvent.
Claim 16
Dependent Claim
17 words
A method of protecting mammalian skin according to claim 11 in which said carrier is mineral oil.
Claim 17
Dependent Claim
18 words
A method of protecting mammalian skin according to claim 7 in which said carrier is an anhydrous cream.
References Cited (Backward Citations)
US4303639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |