Patent US3666484A successfully refreshed from Google Patents.
US3666484A
Expired / Lapsed
US
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Process for making a spray-dried instant tea of desired bulk density
Assignee: Thomas J Lipton Co
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Filing: 1969-11-12
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Granted: 1972-05-30
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Expires: 1989-11-12
Abstract
Abstract A PROCESS FOR MAKING A SPRAY-DRIED INSTANT TEA POWDER WITHOUT ADDING FOREIGN FILLER MATERIALS TO THE INSTANT TEA IN WHICH TO TEA EXTRACT IS PREPARED FROM TEA LEAVES BY HOT WATER EXTRACTION METHODS, CONTROLLED AMOUNTS OF PECTIC SUBSTANCES DERIVED FROM TEA LEAF ARE ADDED TO THE EXTRACT AND THE MIXTURE IS SPRAY-DRIED TO FORM AN INSTANT TEA POWDER HAVING THE DESIRED BULK DENSITY.
Inventors
- 👤 Martin Gurkin
- 👤 Gary Warner Sanderson
- 👤 Harold Nathaniel Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:52
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/18; A23F3/22; A23F3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |