Patent US2963368A successfully refreshed from Google Patents.
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 19:01
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.
References Cited (Backward Citations)
GB189726292A
Cited
US1094675A
Cited
US1525272A
Cited
US1520122A
Cited
US1916468A
Cited
US2235700A
Cited
US2393562A
Cited
US2852388A
Cited
US2891866A
Cited
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 |