US2863775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of production of tea concentrate directly from tea leaves when the leaves arein a green state, and product of said method
Assignee: Transcontinental Development Co
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Filing: 1957-01-28
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Granted: 1958-12-09
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Perech Ramon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:54
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A PROCESS FOR PRODUCING AN IMPROVED WATER SOLUBLE OXIDIZED TEA EXTRACT, WHICH COMPRISES PREPARING A WATER EXTRACT FROM TEA LEAVES AND HEATING THE AQUEOUS EXTRACT AT AN ELEVATED TEMPERATURE BELOW THE BOILING POINT OF WATER IN CONTACT WITH AN OXYGENOUS ATMOSPHERE FOR AT LEAST ONE HOUR SO THAT WATER SOLUBLE CONSTITUENTS ARE OXIDIZED IN THE AQUEOUS EXTRACT MEDIUM.
Claim 2
Dependent Claim
58 words
A PROCESS FOR PRODUCING AN IMPROVED WATER SOLUBLE OXIDIZED TEA EXTRACT, WHICH COMPRISES PREPARING A WATER EXTRACT FROM TEA LEAVES AND HEATING THE AQUEOUS EXTRACT AT AN ELEVATED TEMPERATURE BELOW THE BOILING POINT OF WATER IN CONTACT WITH AN OXYGENOUS ATMOSPHERE FOR AT LEAST ONE HOUR SO THAT WATER SOLUBLE CONSTITUENTS ARE OXIDIZED IN THE AQUEOUS EXTRACT MEDIUM.
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |