US2639237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tea extraction
Assignee: Standard Brands Inc
•
Filing: 1950-07-20
•
Granted: 1953-05-19
•
Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 William R Johnston
- 👤 Ismar M Reich
- 👤 Glennard E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:47
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THE PROCESS OF PRODUCING A TEA EXTRACT WHICH COMPRISES CHARGING AN EXTRACTOR WITH TEA LEAVES, EVACUATING AIR FROM THE EXTRACTOR, FILLING THE EVACUATED EXTRACTOR WITH CARBON DIOXIDE AND THEN PASSING WATER THROUGH SAID EXTRACTOR.
Claim 2
Dependent Claim
34 words
THE PROCESS OF PRODUCING A TEA EXTRACT WHICH COMPRISES CHARGING AN EXTRACTOR WITH TEA LEAVES, EVACUATING AIR FROM THE EXTRACTOR, FILLING THE EVACUATED EXTRACTOR WITH CARBON DIOXIDE AND THEN PASSING WATER THROUGH SAID EXTRACTOR.
References Cited (Backward Citations)
US1094675A
Cited
US2235700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |