US4011661A
Expired / Lapsed
US
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Powdered emulsion product and method of production
Assignee: KH Neochem Co Ltd
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Filing: 1975-12-15
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Granted: 1977-03-15
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Expires: 1995-12-15
Abstract
Abstract Powdered products containing a drug or nutrient suitable for administering in emulsion form are prepared by dispersing (a) an oil; (b) a solution of a drug or nutriment in oil; or (c) an emulsion of an aqueous solution of a drug or nutriment in oil, in an aqueous solution containing a surface layer former, and, where appropriate, a drug or nutriment, and then spray-drying the dispersion.
Inventors
- 👤 Hitoshi Sezaki
- 👤 Shozo Muranishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:39
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/14; A61K9/16; A61K9/1682; A61K9/1694; A61K9/10; A61K9/107; A61K9/1605; A61K9/1617; A61K9/1623; A61K9/1629; A61K9/1635; A61K9/1658
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
73 words
A method of preparing a powdered product suitable for preparing an emulsion which comprises: dispersing at least one substance selected from (a) a solution of a drug or nutriment in oil, or (b) an emulsion of an aqueous solution of a drug or nutriment in oil, in an aqueous solution containing 0.5-10.0% by weight of a surface layer former based on the total weight of oil and water and thereafter spray-drying the dispersion.
Claim 2
Independent Claim
73 words
A method of preparing a powdered product suitable for preparing an emulsion which comprises: dispersing at least one substance selected from (a) a solution of a drug or nutriment in oil, or (b) an emulsion of an aqueous solution of a drug or nutriment in oil, in an aqueous solution containing 0.5-10.0% by weight of a surface layer former based on the total weight of oil and water and thereafter spray-drying the dispersion.
Claim 3
Dependent Claim
29 words
A method according to claim 1 wherein said oil is selected from the group consisting of sesami oil, peanut oil, olive oil, vitamin A oil and vitamin E oil.
Claim 4
Dependent Claim
30 words
A method according to claim 1 wherein said surface layer former is selected from the group consisting of gelatin, polyvinylpyrrolidone, methylcellulose, polyvinylalcohol, polyethylene glycol and fatty acid esters of sucrose.
Claim 5
Dependent Claim
30 words
A method according to claim 3 wherein the concentration of said surface layer former is from 1% to 3% by weight based upon the total weight of oil and water.
Claim 6
Dependent Claim
27 words
A method according to claim 1 wherein said spray-drying step is carried out at an inlet-gas temperature of 100°-200° C. and an outlet-gas temperature of 70°-100° C.
Claim 7
Dependent Claim
10 words
A powdered product prepared by the method of claim 1.
References Cited (Backward Citations)
US3521370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |