US4808388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamable creams
Assignee: Merz and Co GmbH and Co KG
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Filing: 1987-08-18
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Granted: 1989-02-28
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Expires: 2007-08-18
Abstract
Abstract Foamable cosmetic creams for application onto the skin, comprising a selected creamy oil-in-water emulsion and a selected propellant, which may be and advantageously is a single propellant gas, are disclosed. Improvement of the froth properties is effected by predetermined control of the ingredients of the composition and their proportions, comprising specific percentage ranges of nonionic emulsifier, oil portion, consistency-providing agent, and water, a viscosity of the starting cream emulsion formed therefrom between about 200 and 500 mPas, and the propellant employed, which consists essentially of nitrous oxide or carbon dioxide, preferably nitrous oxide.
Inventors
- 👤 Rolf D. Beutler
- 👤 Thomas Wimmer
- 👤 Gunhild Angst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:41
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K9/00; A61K9/10; A61K9/12; A61K9/122; A61Q; A61Q19/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A foamable cream, suitable for forming a cosmetic mousse, comprising an oil-in-water cream emulsion and a propellant therein, characterized in that the cream emulsion prior to admixture with the propellant consists essentially of a mixture of between about 2 and 9 percent by weight of a dermatologically-acceptable nonionic emulsifying agent, between about 4.5 and 21 percent by weight of an oil portion, and between about 0.5 and 4.5 percent by weight of a consistency-providing agent, the balance being water to 100 percent by weight, has a viscosity between about 200 and 500 mPas, and by the fact that the propellant consists essentially of nitrous oxide or carbon dioxide.
Claim 2
Dependent Claim
108 words
A foamable cream, suitable for forming a cosmetic mousse, comprising an oil-in-water cream emulsion and a propellant therein, characterized in that the cream emulsion prior to admixture with the propellant consists essentially of a mixture of between about 2 and 9 percent by weight of a dermatologically-acceptable nonionic emulsifying agent, between about 4.5 and 21 percent by weight of an oil portion, and between about 0.5 and 4.5 percent by weight of a consistency-providing agent, the balance being water to 100 percent by weight, has a viscosity between about 200 and 500 mPas, and by the fact that the propellant consists essentially of nitrous oxide or carbon dioxide.
Claim 3
Dependent Claim
16 words
A composition according to claim 1 characterized in that the propellant consists essentially of nitrous oxide.
Claim 4
Dependent Claim
34 words
A cosmetic mousse produced from the composition of claim 2 wherein the bubble size is between about 4 and 20 μm and the foam density is between about 0.1 and 0.16 g/cm 3 .
Claim 5
Dependent Claim
25 words
A composition of claim 1 wherein the propellant is present in an amount between about one and four percent by weight of the propellant-containing emulsion.
Claim 6
Dependent Claim
18 words
A composition of claim 4 wherein the composition is under a pressure between about 100 and 150 psi.
Claim 7
Dependent Claim
19 words
A composition of claim 4 wherein the propellant is CO 2 in amount between about 1.2 and 1.7 percent.
Claim 8
Dependent Claim
20 words
A composition of claim 4 wherein the propellant is N 2 O in amount between about 2 and 3.2 percent.
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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |