Patent US4495374A successfully refreshed from Google Patents.
Patent US4606913A successfully refreshed from Google Patents.
US4606913A
Expired / Lapsed
US
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High internal phase emulsions
Assignee: Lever Brothers Co
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Filing: 1979-12-14
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Granted: 1986-08-19
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Expires: 1999-12-14
Abstract
Abstract An improved high-internal-phase emulsion having increased stability under conditions of long term storage at elevated temperatures and freeze-thaw conditions, methods for preparing and stabilizing said emulsions and cosmetic preparations based thereon are disclosed. The improvement comprises incorporating into said emulsion an amount sufficient to increase the stability of said emulsion of an electrolyte contained in the aqueous phase of the emulsion.
Inventors
- 👤 Michael P. Aronson
- 👤 Michael F. Petko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:11
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/06; A61Q; A61Q1/00; A61Q1/02; A61Q1/04; A61Q1/10; A61Q15/00; A61Q17/00; A61Q17/04; A61Q19/00; C; C09; C09K; C09K23/00; Y; Y10; Y10S; Y10S424/00; Y10S424/01; Y10S424/04
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
57 words
An improved high-internal-phase emulsion of the type comprising an aqueous phase, an oil phase and an emulsifier, the improvement comprising: an amount sufficient to increase the stability of said emulsion of an electrolyte selected from the group consisting of potassium sulfate and magnesium sulfate contained in said aqueous phase thereby providing for increased stability of said emulsion.
Claim 2
Dependent Claim
57 words
An improved high-internal-phase emulsion of the type comprising an aqueous phase, an oil phase and an emulsifier, the improvement comprising: an amount sufficient to increase the stability of said emulsion of an electrolyte selected from the group consisting of potassium sulfate and magnesium sulfate contained in said aqueous phase thereby providing for increased stability of said emulsion.
Claim 3
Dependent Claim
19 words
An improved high-internal-phase emulsion according to claim 1, wherein the internal phase of said emulsion is said aqueous phase.
Claim 4
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 2, wherein said emulsifier is present at a level of about 5 to about 30 percent by weight of the external phase of said emulsion.
Claim 5
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 2, wherein said electrolyte is present at a level of about 0.001 to about 10 percent by weight of said aqueous phase.
Claim 6
Dependent Claim
33 words
An improved high-internal-phase emulsion according to claim 2, further comprising an amount sufficient to provide a moisturizing effect to the skin when said emulsion is contacted to said skin of a skin moisturizer.
Claim 7
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 2, further comprising an amount sufficient to provide a sunscreening effect when said emulsion is contacted to the skin or hair, of a sunscreen agent.
Claim 8
Dependent Claim
21 words
An improved high-internal-phase emulsion according to claim 2, further comprising an amount sufficient to provide antibacterial activity of an antibacterial agent.
Claim 9
Dependent Claim
28 words
An improved high-internal-phase emulsion according to claim 2, further comprising an amount sufficient to provide deodorant activity when said emulsion is applied to the skin of a deodorant.
Claim 10
Dependent Claim
18 words
An improved high-internal-phase emulsion according to claim 2, further comprising an amount sufficient to provide antiperspirant active material.
Claim 11
Dependent Claim
22 words
An improved high-internal-phase emulsion according to claim 2, further comprising an amount sufficient to provide a therapeutic effect of a therapeutic agent.
Claim 12
Dependent Claim
17 words
An improved high-internal-phase emulsion according to claim 2, further comprising solid particulate matter suspended in said emulsion.
Claim 13
Dependent Claim
30 words
An improved high-internal-phase emulsion according to claim 11, wherein said solid particulate matter is selected from the group consisting of: (i) abrasives; (ii) pigments (iii) opasifiers; and (iv) mixtures thereof.
Claim 14
Dependent Claim
45 words
An improved high-internal-phase emulsion according to claim 2, further comprising a cleansing agent selected from the group consisting of: (i) anionic surface active agents; (ii) nonanionic surface active agents; (iii) cationic surface active agents; (iv) zwitterionic surface active agents; (v) soap; and (vi) mixtures thereof.
Claim 15
Dependent Claim
14 words
An improved high-internal-phase emulsion according to claim 2, further comprising water soluble polymeric materials.
Claim 16
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 14, wherein said water soluble polymeric material is selected from the group consisting of: (i) facial mask polymeric materials; and (ii) hair spray polymeric materials.
Claim 17
Dependent Claim
26 words
An improved high-internal-phase emulsion according to claim 2, further comprising at least one ingredient selected from the group consisting of: (i) perfume; and (ii) coloring agents.
Claim 18
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 3, wherein said emulsifier is present at a level of about 7 to about 30 percent by weight of the external phase of said emulsion.
Claim 19
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 17, wherein said emulsifier is present at a level of about 10 to about 20 percent by weight of the external phase of said emulsion.
Claim 20
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 4, wherein said electrolyte is present at a level of about 0.01 to about 10 percent by weight of said aqueous phase.
Claim 21
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 19, wherein said electrolyte is present at a level of about 1 to about 6 percent by weight of said aqueous phase.
Claim 22
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 20 wherein said electrolyte is present at a level of about 2 to about 4 percent by weight of said aqueous phase.
Claim 23
Dependent Claim
19 words
An improved high-internal-phase emulsion according to claim 1, wherein the internal phase of said emulsion is said oil phase.
Claim 24
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 22, wherein said emulsifier is present at a level of about 5 to about 30 percent by weight of the external phase of said emulsion.
Claim 25
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 23, wherein said emulsifier is present at a level of about 7 to about 30 percent by weight of the external phase of said emulsion.
Claim 26
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 24, wherein said emulsifier is present at a level of about 10 to about 20 percent by weight of the external phase of said emulsion.
Claim 27
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 23, wherein said electrolyte is present at a level of about 0.001 to about 10 percent by weight of said aqueous phase.
Claim 28
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 26, wherein said electrolyte is present at a level of about 0.01 to about 10 percent by weight of said aqueous phase.
Claim 29
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 27, wherein said electrolyte is present at a level of about 1 to about 6 percent by weight of said aqueous phase.
Claim 30
Dependent Claim
28 words
An improved high-internal-phase emulsion according to claim 28, wherein said electrolyte is present at a level of about 2 to 4 percent by weight of said aqueous phase.
Claim 31
Dependent Claim
33 words
An improved high-internal-phase emulsion according to claim 22, further comprising an amount sufficient to provide a moisturizing effect to the skin when said emulsion is contacted to said skin, of a skin moisturizer.
Claim 32
Dependent Claim
32 words
An improved high-internal-phase emulsion according to claim 22, further comprising an amount sufficient to provide a sunscreening effect when said emulsion is contacted to the skin or hair, of a sunscreen agent.
Claim 33
Dependent Claim
21 words
An improved high-internal-phase emulsion according to claim 22, further comprising an amount sufficient to provide antibacterial activity of an antibacterial agent.
Claim 34
Dependent Claim
28 words
An improved high-internal-phase emulsion according to claim 22, further comprising an amount sufficient to provide deodorant activity when said emulsion is applied to the skin of a deodorant.
Claim 35
Dependent Claim
30 words
An improved high-internal-phase emulsion according to claim 22, further comprising an amount sufficient to provide antiperspirant activity when said emulsion is applied to the skin of an antiperspirant active material.
Claim 36
Dependent Claim
22 words
An improved high-internal-phase emulsion according to claim 22, further comprising an amount sufficient to provide a therapeutic effect of a therapeutic agent.
Claim 37
Dependent Claim
17 words
An improved high-internal-phase emulsion according to claim 22, further comprising solid particulate matter suspended in said emulsion.
Claim 38
Dependent Claim
29 words
An improved high-internal-phase emulsion according to claim 36, wherein said particulate matter is selected from the group consisting of: (i) abrasives; (ii) pigments (iii) opasifiers; and (iv) mixtures thereof.
Claim 39
Dependent Claim
45 words
An improved high-internal-phase emulsion according to claim 22, further comprising a cleansing agent selected from the group consisting of: (i) anionic surface active agents; (ii) nonanionic surface active agents; (iii) cationic surface active agents; (iv) zwitterionic surface active agents; (v) soap; and (vi) mixtures thereof.
Claim 40
Dependent Claim
27 words
An improved high-internal phase emulsion according to claim 22, further comprising at least one ingredient selected from the group consisting of: (i) perfume; and (ii) coloring agents.
Claim 41
Dependent Claim
95 words
An improved process for preparing a high-internal-phase emulsion of the type comprising an aqueous phase, an oil phase and an emulsifier and prepared by the steps comprising: (i) dissolving said emulsifier in oil to provide said oil phase; and (ii) homogenizing said oil phase with said aqueous phase to provide said high-internal-phase emulsion, the improvement comprising: (i) dissolving an amount sufficient to increase the stability of said emulsion of an electrolyte selected from the group consisting of potassium sulfate and magnesium sulfate contained in said aqueous phase thereby providing for increased stability of said emulsion.
Claim 42
Dependent Claim
95 words
An improved process for preparing a high-internal-phase emulsion of the type comprising an aqueous phase, an oil phase and an emulsifier and prepared by the steps comprising: (i) dissolving said emulsifier in oil to provide said oil phase; and (ii) homogenizing said oil phase with said aqueous phase to provide said high-internal-phase emulsion, the improvement comprising: (i) dissolving an amount sufficient to increase the stability of said emulsion of an electrolyte selected from the group consisting of potassium sulfate and magnesium sulfate contained in said aqueous phase thereby providing for increased stability of said emulsion.
Claim 43
Dependent Claim
18 words
An improved process according to claim 40, wherein the internal phase of said emulsion is said aqueous phase.
Claim 44
Dependent Claim
51 words
An improved process according to claim 41, wherein: (i) said emulsifier is present at a level of about 30 percent by weight of the external phase of said emulsion; and (ii) said electrolyte is present at a level of about 0.001 to about 10 percent by weight of said aqueous phase.
Claim 45
Dependent Claim
64 words
An improved process according to claim 40, wherein: (i) the internal phase of said emulsion is said oil phase; (ii) said emulsifier is present at a level of about 5 to about 30 percent by weight of external phase of said emulsion; and (iii) said electrolyte is present at a level of about 0.001 to about 10 percent by weight of said aqueous phase.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |