Patent US3979528A successfully refreshed from Google Patents.
US3979528A
Expired / Lapsed
US
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Pressure fixation of coffee grinder gas
Assignee: General Foods Corp
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Filing: 1974-05-20
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Granted: 1976-09-07
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Expires: 1994-05-20
Abstract
Abstract The concentration of volatile organics that can be incorporated into a glyceride carrier is increased by the use of pressure in excess of 100 psia. Specifically coffee grinder gas aromatics are contacted with coffee oil in a pressure vessel. The resulting aromatized oil is then combined with soluble coffee solids.
Inventors
- 👤 James P. Mahlmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:35
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/46; A23F5/48; A23F5/486
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A method for aromatizing soluble coffee comprising the steps of: a. condensing, as a frost, an aroma-containing gas which has a high carbon dioxide content, b. placing the aroma-containing frost in a pressure vessel, c. placing liquid glyceride in the vessel at a level of one gram of glyceride to 0.5 to 6 grams of aroma frost, isolating the pressure vessel and increasing the temperature within the vessel to a temperature of about 70°-75°F such that the pressure within the vessel increases to above 100 psia and a liquid CO 2 phase which contains aroma is formed, d. removing the glyceride from the vessel and combining it with coffee solids.
Claim 2
Independent Claim
110 words
A method for aromatizing soluble coffee comprising the steps of: a. condensing, as a frost, an aroma-containing gas which has a high carbon dioxide content, b. placing the aroma-containing frost in a pressure vessel, c. placing liquid glyceride in the vessel at a level of one gram of glyceride to 0.5 to 6 grams of aroma frost, isolating the pressure vessel and increasing the temperature within the vessel to a temperature of about 70°-75°F such that the pressure within the vessel increases to above 100 psia and a liquid CO 2 phase which contains aroma is formed, d. removing the glyceride from the vessel and combining it with coffee solids.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the aromatized glyceride is added to soluble coffee powder.
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein the aroma-bearing gas is obtained by disrupting the cellular structure of freshly roasted coffee beans.
References Cited (Backward Citations)
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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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |