US3979528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fixation of coffee grinder gas
Assignee: General Foods Corp
•
Filing: 1974-05-20
•
Granted: 1976-09-07
•
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 00:48
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)
US2680687A
Cited
US3021218A
Cited
US3535118A
Cited
US3823241A
Cited
US3783163A
Cited
US3836682A
Cited
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 |