US4639367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol foam
Assignee: Product Resources International Inc
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Filing: 1985-09-20
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Granted: 1987-01-27
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Expires: 2005-09-20
Abstract
Abstract A stable, edible anhydrous aerosol foam capable of suspending up to 50% by weight of dispersed solid particles is prepared using a foamable liquid oil, a foaming agent and a food grade propellant. The foam is a stable whip having the consistency of whipped cream and can be dispensed in repeatable and measurable doses onto a spoon. It is useful to dispense a wide variety of therapeutic agents and, in particular, as an alternative to tablets which are hard to swallow or liquid medicines having a bad taste.
Inventors
- 👤 Leonard Mackles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0053; A61K9/0056
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
57 words
An edible, anhydrous aerosol foam composition comprising a foamable liquid oil, a foaming agent and a propellant, said propellant being present in an amount sufficient to produce a stable, measurable foam but insufficient to produce a spray when said composition is ejected through an aerosol valve, and dispersed solid particles, said particles comprising an active therapeutic agent.
Claim 2
Dependent Claim
57 words
An edible, anhydrous aerosol foam composition comprising a foamable liquid oil, a foaming agent and a propellant, said propellant being present in an amount sufficient to produce a stable, measurable foam but insufficient to produce a spray when said composition is ejected through an aerosol valve, and dispersed solid particles, said particles comprising an active therapeutic agent.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein said propellant comprises 1 to 10 wt. % of said composition.
Claim 4
Dependent Claim
31 words
The composition of claim 2 wherein said solid particles comprise at least 15 wt. % of said composition and said particles are insoluble in the other ingredients of said foam composition.
Claim 5
Dependent Claim
22 words
The composition of claim 3 wherein the average size of said solid particles is in the range of 50 to 100 microns.
Claim 6
Dependent Claim
62 words
The composition of claim 1 wherein said propellant comprises 1 to 10 wt. % of said composition, said foaming agent comprises 2 to 40 wt. % of said composition, said solid particles comprise at least 15 wt. % of said composition and are insoluble in the other ingredients of said foam composition and the balance of said composition is said liquid oil.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein said propellant is a hydrocarbon.
Claim 8
Dependent Claim
10 words
The composition of claim 5 wherein said propellant is propane.
Claim 9
Dependent Claim
47 words
The composition of claim 5 wherein said liquid oil is selected from the group consisting of soybean oil, partially hydrogenated soybean oil, linseed oil, corn oil, peanut oil, sunflower oil, cottonseed oil, olive oil, castor oil, liquid petrolatums, oleic acid, lauric acid and mono- and diglyceride oils.
Claim 10
Dependent Claim
62 words
The composition of claim 5 wherein the foaming agent is selected from the group consisting of lecithin, polyglycerol esters of fatty acids having an HLB value of between 4.0 and 13.0, glycerol esters of fatty acids having an HLB value of between 2.5 and 4.5, sorbitan esters of fatty acids having an HLB value of between 3.0 and 7.0 and mixtures thereof.
Claim 11
Dependent Claim
18 words
The composition of claim 9 wherein said foaming agent comprises 2 to 40 wt. % of said composition.
Claim 12
Dependent Claim
17 words
The composition of claim 9 wherein the foaming agent is a mixture of lecithin and glycerol monostearate.
Claim 13
Dependent Claim
17 words
The composition of claim 9 wherein the foaming agent is a mixture of lecithin and decaglycerol tetraoleate.
Claim 14
Dependent Claim
12 words
The composition of claim 9 wherein the foaming agent is triglycerol monooleate.
Claim 15
Dependent Claim
12 words
The composition of claim 9 wherein the foaming agent is decaglycerol tetraoleate.
Claim 16
Dependent Claim
12 words
The composition of claim 9 wherein the foaming agent is sorbitan monostearate.
Claim 17
Dependent Claim
18 words
The composition of claim 9 wherein the foaming agent is a mixture of decaglycerol tetraoleate and sorbitan monostearate.
Claim 18
Dependent Claim
18 words
The composition of claim 9 wherein the foaming agent is a mixture of decaglycerol tetraoleate and glycerol monostearate.
Claim 19
Dependent Claim
20 words
The compositiion of claim 9 wherein the foaming agent is a mixutre of decaglycerol tetraoleate, sorbitan monostearate and glycerol monostearate.
Claim 20
Dependent Claim
18 words
The composition of claim 9 wherein the foaming agent is a mixture of sorbitan monostearate and glycerol monostearate.
Claim 21
Dependent Claim
20 words
The composition of claim 9 wherein the foaming agent is from about 3 to 15 wt. % of the composition.
Claim 22
Dependent Claim
19 words
The composition of claim 9 wherein the foaming agent is a mixture of lecithin, sorbitan monostearate and glycerol monostearate.
Claim 23
Dependent Claim
19 words
The composition of claim 9 wherein the foaming agent is a mixture of lecithin, sorbitan monostearate and decaglycerol tetraoleate.
Claim 24
Dependent Claim
17 words
The composition of claim 9 wherein the foaming agent is a mixture of lecithin and sorbitan monostearate.
References Cited (Backward Citations)
US4174295A
Cited
US4425164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |