US2963368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a tea concentrate
Assignee: Kwik Kafe Coffee Processors of America Inc
•
Filing: 1958-05-28
•
Granted: 1960-12-06
•
Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Greenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:21
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/36; A23F3/38; A23F3/16; A23F3/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD OF PRODUCING A TEA CONCENTRATE WHICH COMPRISES EXTRACTING THE SOLUBLE ELEMENTS OF TEA LEAVES WITH HOT WATER TO PRODUCE A TEA EXTRACT HAVING A SUSPENDED SOLID PHASE COMPRISING IN PART A CAFFEINE-TANNIN COMPLEX, AND HAVING A PH OF ABOUT 4.8 TO 5.0, ADDING SODIUM BICARBONATE TO RAISE THE PH OF THE EXTRACT TO ABOUT 5.5, ADDING ABOUT .1% OF SODIUM BENZOATE, PASSING THE EXTRACT THROUGH AN ULTRA CENTRIFUGE TO PARTLY REMOVE THE SAID SUSPENDED CAFFEINE-TANNIN COMPLEX, WHEREBY TO PRODUCE AN EXTRACT HAVING A MATERIALLY LOWERED CAFFEINE AND TANNIN CONTENT, ADDING ABOUT .1% OF SUSPENDING AGENT SELECTED FROM THE CLASS CONSISTING OF CELLULOSE GUM, METHOCEL, GUM ARABIC, ALIGINATES, AND CARRIGINATES, PACKING THE CONCENTRATE IN GAS-TIGHT CONTAINERS, AND FREEZING THE CONCENTRATE THEREIN.
Claim 2
Independent Claim
122 words
THE METHOD OF PRODUCING A TEA CONCENTRATE WHICH COMPRISES EXTRACTING THE SOLUBLE ELEMENTS OF TEA LEAVES WITH HOT WATER TO PRODUCE A TEA EXTRACT HAVING A SUSPENDED SOLID PHASE COMPRISING IN PART A CAFFEINE-TANNIN COMPLEX, AND HAVING A PH OF ABOUT 4.8 TO 5.0, ADDING SODIUM BICARBONATE TO RAISE THE PH OF THE EXTRACT TO ABOUT 5.5, ADDING ABOUT .1% OF SODIUM BENZOATE, PASSING THE EXTRACT THROUGH AN ULTRA CENTRIFUGE TO PARTLY REMOVE THE SAID SUSPENDED CAFFEINE-TANNIN COMPLEX, WHEREBY TO PRODUCE AN EXTRACT HAVING A MATERIALLY LOWERED CAFFEINE AND TANNIN CONTENT, ADDING ABOUT .1% OF SUSPENDING AGENT SELECTED FROM THE CLASS CONSISTING OF CELLULOSE GUM, METHOCEL, GUM ARABIC, ALIGINATES, AND CARRIGINATES, PACKING THE CONCENTRATE IN GAS-TIGHT CONTAINERS, AND FREEZING THE CONCENTRATE THEREIN.
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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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |