US2831772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beverage preparation
Assignee: Afico SA
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Filing: 1956-03-22
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Granted: 1958-04-22
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Expires: 1976-03-22
Abstract
No abstract record available.
Inventors
- 👤 Irving I Herz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:13
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF PREPARING A HIGHLY CONCENTRATED TEA ESSENCE THAT READILY DISSOLVES IN COLD WATER, TO THE RESULTING AQUEOUS SOLUTION OF WHICH ICE CAN BE ADDED TO MAKE ICED TEA, WHICH METHOD COMPRISES PREPARING A HOT CLEAR LIQUID TEA ESSENCE FROM TEA LEAVES BY TREATING THEM WITH HOT WATER BY STEP SELECTED FROM THE CLASS CONSISTING OF BREWING AND PERCOLATION; AND DISSOLVING IN SAID AQUEOUS TEA ESSENCE AN AMOUNT OF SYSTEMICALLY INNOCUOUS SULFITE SUFFICIENT TO RENDER SOLUBLE IN COLD WATER THE ORDINARILY COLD WATER INSOLUBLE FRACTION OF THE TEA ESSENCE, AND CONCENTRATING THE TEA ESSENCE CONTAINING THE THUS TREATED FRACTION.
Claim 2
Independent Claim
100 words
THE METHOD OF PREPARING A HIGHLY CONCENTRATED TEA ESSENCE THAT READILY DISSOLVES IN COLD WATER, TO THE RESULTING AQUEOUS SOLUTION OF WHICH ICE CAN BE ADDED TO MAKE ICED TEA, WHICH METHOD COMPRISES PREPARING A HOT CLEAR LIQUID TEA ESSENCE FROM TEA LEAVES BY TREATING THEM WITH HOT WATER BY STEP SELECTED FROM THE CLASS CONSISTING OF BREWING AND PERCOLATION; AND DISSOLVING IN SAID AQUEOUS TEA ESSENCE AN AMOUNT OF SYSTEMICALLY INNOCUOUS SULFITE SUFFICIENT TO RENDER SOLUBLE IN COLD WATER THE ORDINARILY COLD WATER INSOLUBLE FRACTION OF THE TEA ESSENCE, AND CONCENTRATING THE TEA ESSENCE CONTAINING THE THUS TREATED FRACTION.
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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |