US2819190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter-current diffusion tower
Assignee: BMA Braunschweigische Maschinenbauanstalt AG
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Filing: 1953-03-18
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Granted: 1958-01-07
•
Expires: 1973-03-18
Abstract
No abstract record available.
Inventors
- 👤 Kather Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:51
CPC Classifications
C; C13; C13B; C13B10/00; C13B10/08; C13B10/10; C13B10/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN EXTRACTION TOWER FOR COMMINUTED VEGETABLE MATTER AND PARTICULARLY FOR SUGAR BEET CHIPS COMPRISING A CENTER SHAFT, AN INTERRUPTED SCREW CONVEYOR SUBDIVIDED BY SAID SHAFT INTO SUPERPOSED SECTIONS, SAID SECTIONS DEFINING VERTICALLY SUPERPOSED FREE SPACES BETWEEN ADJACENT THREADS THEREOF, SAID THREADS SERVING TO TRANSPORT THE CHARGE OF SAID CHIPS UPWARDLY, MEANS TO CONDUCT A LEACH-
Claim 2
Dependent Claim
55 words
AN EXTRACTION TOWER FOR COMMINUTED VEGETABLE MATTER AND PARTICULARLY FOR SUGAR BEET CHIPS COMPRISING A CENTER SHAFT, AN INTERRUPTED SCREW CONVEYOR SUBDIVIDED BY SAID SHAFT INTO SUPERPOSED SECTIONS, SAID SECTIONS DEFINING VERTICALLY SUPERPOSED FREE SPACES BETWEEN ADJACENT THREADS THEREOF, SAID THREADS SERVING TO TRANSPORT THE CHARGE OF SAID CHIPS UPWARDLY, MEANS TO CONDUCT A LEACH-
References Cited (Backward Citations)
US1971632A
Cited
US2637666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |