US2852388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentrated extracts of tea
Assignee: Individual
•
Filing: 1954-06-08
•
Granted: 1958-09-16
•
Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Jose C Cortez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:34
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/22; A23F3/163; A23F3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
IN A METHOD OF MAKING A TEA CONCENTRATE THE STEP WHICH CONSISTS IN EXTRACTING THE TEA WITH HEATED WATER IN THE PRESENCE OF AN ION EXCHANGE AGENT WHICH IS A WATER INSOLUBLE SOLID HAVING EXTENDED SURFACE IN THE ORDER OF A MICROPOROUS BODY AND A STRONG NEGATIVE POLARITY.
Claim 2
Dependent Claim
48 words
IN A METHOD OF MAKING A TEA CONCENTRATE THE STEP WHICH CONSISTS IN EXTRACTING THE TEA WITH HEATED WATER IN THE PRESENCE OF AN ION EXCHANGE AGENT WHICH IS A WATER INSOLUBLE SOLID HAVING EXTENDED SURFACE IN THE ORDER OF A MICROPOROUS BODY AND A STRONG NEGATIVE POLARITY.
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |