US3939291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinder gas fixation
Assignee: General Foods Corp
•
Filing: 1974-05-20
•
Granted: 1976-02-17
•
Expires: 1994-05-20
Abstract
Abstract Coffee grinder gas is fixed in a glyceride at relatively high levels by contacting condensed grinder gas frost and the glyceride in a pressure vessel at a temperature which is above the critical temperature of liquid carbon dioxide. The pressure vessel is then slowly vented in order to prevent a drop in temperature to below the critical level.
Inventors
- 👤 Saul Norman Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:37
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/46; A23F5/48; A23F5/486
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
142 words
A method for aromatizing soluble coffee with an aromatized glyceride 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, the amount of frost being sufficient to provide a saturated carbon dioxide phase within the vessel, c. isolating the vessel from the atmosphere, d. supplying heat to the the vessel to raise the internal temperature above 87.8°F., e. contacting within said heated vessel the frost aromas and a liquid glyceride phase said glyceride being present in the vessel at a level of about one gram of glyceride to 0.5 to 6 grams of the frost; thereafter, f. slowly releasing pressure from the vessel in a manner which avoids the formation of liquid carbon dioxide, and then g. combining the aroma-bearing glyceride with coffee solids.
Claim 2
Independent Claim
142 words
A method for aromatizing soluble coffee with an aromatized glyceride 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, the amount of frost being sufficient to provide a saturated carbon dioxide phase within the vessel, c. isolating the vessel from the atmosphere, d. supplying heat to the the vessel to raise the internal temperature above 87.8°F., e. contacting within said heated vessel the frost aromas and a liquid glyceride phase said glyceride being present in the vessel at a level of about one gram of glyceride to 0.5 to 6 grams of the frost; thereafter, f. slowly releasing pressure from the vessel in a manner which avoids the formation of liquid carbon dioxide, and then g. combining the aroma-bearing glyceride with coffee solids.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the aroma-bearing glyceride is added to soluble coffee powder.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein the contents of the vessel is raised to between about 90°F and 120°F.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein heat is supplied to the vessel contents by means of a water bath.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein the vessel contents are maintained at above 87.8°F in excess of 1 hour.
Claim 7
Dependent Claim
14 words
The method of claim 1 wherein the pressure within the vessel is released isothermally.
Claim 8
Dependent Claim
24 words
The method of claim 1 wherein the frost and the glyceride are placed in the vessel before any heat is supplied to the vessel.
Claim 9
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
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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) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |