US2813598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removal of light isotope product from liquid thermal diffusion units
Assignee: Individual
•
Filing: 1945-11-15
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Granted: 1957-11-19
•
Expires: 1965-11-15
Abstract
No abstract record available.
Inventors
- 👤 John D Hoffman
- 👤 James K Ballou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:08
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/10; B01D59/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
A PROCESS FOR REMOVING LIGHT PRODUCT FROM A URANIUM HEXAFLUORIDE THERMAL DIFFUSION SYSTEM COMPRISING A PLURALITY OF PARALLEL-CONNECTED THERMAL DIFFUSION COLUMNS CONTAINING LIQUID URANIUM HEXAFLUORIDE, WHICH COMPRISES MAINTAINING THE PRESSURE IN SAID COLUMNS WITHIN THE RANGE 1500-2000 LBS. PER SQ. IN., PREVENTING INTER-COLUMN FLOW AT THE BOTTON OF SAID COLUMNS WHILE TRANSFERRING A MINOR FRACTION OF THE LIGHT PRODUCT FROM THE TOP OF SAID COLUMNS, UNDER SUFFICIENTLY CONSTRICTED FOLW TO PREVENT A PRESSURE DROP IN SAID COLUMNS IN EXCESS TO 200 BLS. PER SQ IN., TO AN INTERMEDIATE RECEIVER MAINTAINEDAT A TEMPERATURE WITHIN THE RANGE 100-170*C., AND THEREAFTER PREVENTING INTER-COLUMN FLOW AT THE TOP OF SAID COLUMNS, AND PREVENTING FLOW TO SAID INTERMEDIATE RECEIVER, WHILE TRANSFERRING SAID WITHDRAWN FRACTION OF LIGHT PRODUCT, BY MEANS OF ITS VAPOR PRESSURE, FROM SAID INTERMEDIATE RECEIVER TO A FINAL RECEIVER MAINTAINED AT A TEMPERATURE WITHIN THE RANGE 45-80*C.
References Cited (Backward Citations)
US2268134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |