Patent US1528298A successfully refreshed from Google Patents.
US3322271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of stalk from manufactured tea
Assignee: Individual
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Filing: 1964-04-20
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Granted: 1967-05-30
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Edwards Harold Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:12
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR PRODUCING A RESIDUAL TEA FRACTION ENRICHED IN LEAF CONTENT FROM A MANUFACTURED TEA CONSISTING OF A MIXTURE OF FIRED TEA LEAF AND STALK IN WHICH THE PARTICLES OF THE TEA MIXTURE ARE OF VARIOUS DENSITIES AND ONE FRACTION OF THE TEA MIXTURE WHICH IS LESS THAN A PREDETERMINED DENSITY IS PREDOMINANTLY STALK, WHICH COMPRISES IMMERSING THE MIXTURE IN A VOLATILE ORGANIC LIQUID MEDIUM OF SAID PREDETERMINED DENSITY WHEREBY SAID ONE FRACTION PREFERENTIALLY FLOATS THEREIN, AND SAID RESIDUAL TEA FRACTION SINKS THEREIN, SEPARATING SAID ONE FRACTION AND THE LIQUID IN CONTACT THEREWITH FROM THE RESIDUAL TEA FRACTION AND THE LIQUID IN CONTACT THEREWITH, AND RECOVERING THE TWO SOLID FRACTIONS FROM THE PORTIONS SO SEPARATED.
Claim 2
Dependent Claim
116 words
A PROCESS FOR PRODUCING A RESIDUAL TEA FRACTION ENRICHED IN LEAF CONTENT FROM A MANUFACTURED TEA CONSISTING OF A MIXTURE OF FIRED TEA LEAF AND STALK IN WHICH THE PARTICLES OF THE TEA MIXTURE ARE OF VARIOUS DENSITIES AND ONE FRACTION OF THE TEA MIXTURE WHICH IS LESS THAN A PREDETERMINED DENSITY IS PREDOMINANTLY STALK, WHICH COMPRISES IMMERSING THE MIXTURE IN A VOLATILE ORGANIC LIQUID MEDIUM OF SAID PREDETERMINED DENSITY WHEREBY SAID ONE FRACTION PREFERENTIALLY FLOATS THEREIN, AND SAID RESIDUAL TEA FRACTION SINKS THEREIN, SEPARATING SAID ONE FRACTION AND THE LIQUID IN CONTACT THEREWITH FROM THE RESIDUAL TEA FRACTION AND THE LIQUID IN CONTACT THEREWITH, AND RECOVERING THE TWO SOLID FRACTIONS FROM THE PORTIONS SO SEPARATED.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |