Patent US2802739A successfully refreshed from Google Patents.
US2802739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing decaffeinated coffee extract
Assignee: Hills Bros Coffee Inc
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Filing: 1951-06-15
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Granted: 1957-08-13
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Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 Nutting Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:27
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/46; A23F5/48; A23F5/486; A23F5/20; A23F5/22; A23F5/226
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS OF PREPARING A DRY COFFEE CONCENTRATE WITH RESTORED VOLATILE FLAVOR CONSISTUENTS INCLUDING THE STEPS OF INTRODUCING STEAM INTO GROUND ROASTED COFFEE TO WET AND TO LIBERATE THE VOLATILE CONSTITUENTS THEREOF, CONDENSING THE STEAM AND VOLATILES MIXTURE TO FORM AN EXTRACT OF THE VOLATILE CONSTITUENTS OF THE COFFEE, SUBSEQUENTLY TREATING THE GROUND ROASTED COFFEE WITH WATER TO FORM AN AQUEOUS EXTRACTION, REMOVING CAFFEIN FROM SAID AQUEOUS EXTRACTION, CONCENTRATING THE AQUEOUS EXTRACTION TO REDUCE THE WATER CONTENT THEREOF, THEN MIXING THE CONCENTRATED
Claim 2
Dependent Claim
82 words
A PROCESS OF PREPARING A DRY COFFEE CONCENTRATE WITH RESTORED VOLATILE FLAVOR CONSISTUENTS INCLUDING THE STEPS OF INTRODUCING STEAM INTO GROUND ROASTED COFFEE TO WET AND TO LIBERATE THE VOLATILE CONSTITUENTS THEREOF, CONDENSING THE STEAM AND VOLATILES MIXTURE TO FORM AN EXTRACT OF THE VOLATILE CONSTITUENTS OF THE COFFEE, SUBSEQUENTLY TREATING THE GROUND ROASTED COFFEE WITH WATER TO FORM AN AQUEOUS EXTRACTION, REMOVING CAFFEIN FROM SAID AQUEOUS EXTRACTION, CONCENTRATING THE AQUEOUS EXTRACTION TO REDUCE THE WATER CONTENT THEREOF, THEN MIXING THE CONCENTRATED
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |