Patent US2895803A successfully refreshed from Google Patents.
US2895803A
Expired / Lapsed
US
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Isotope concentration system
Assignee: Individual
•
Filing: 1950-09-29
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Granted: 1959-07-21
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Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Jerome S Spevack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:55
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/28; B01D59/32; Y; Y10; Y10S; Y10S159/00; Y10S159/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A METHOD OF PRODUCING A SUBSTANCE CONTAINING CONCENTRATED THEREIN AN ISOTOPE OF AN ELEMENT BY EXCHANGING, AT TWO DIFFERENT TEMPERATURES, SAID ISOTOPE WITH ANOTHER ISOTOPE OF THE SAME ELEMENT BETWEEN CHEMICALLY DIFFERENT FLUID SUBSTANCES WHICH ARE PHYSICALLY SEPARABLE FROM EACH OTHER AND WHICH ARE CAPABLE OF CONTAINING EACH OF SAID ISOTOPES, WHICH METHOD COMPRISES (A) ESTABLISHING A COUNTERCURRENT FLOW OF THE TWO SUBSTANCES IN A SERIES OF AT LEAST TWO PAIRS OF EXCHANGE UNITS; (B) MIXING SAID TWO FLUIDS IN EACH OF SAID EXCHANGE UNITS TO CAUSE AN EXCHANGE OF ISOTOPES OF THE ELEMENT BETWEEN THE TWO FLUIDS; (C) MAINTAINING A FIRST UNIT OF EACH PAIR AT A TEMPERATURE TO CAUSE THE FIRST FLUID FLOWING THERETHROUGH TO BECOME ENRICHED AND THE SECOND FLUID FLOWING THERETHROUGH TO BECOME IMPOVERISHED WITH RESPECT TO SAID ISOTOPE; AND (D) MAINTAINING THE SECOND UNIT OF EACH PAIR AT A TEMPERATURE TO CAUSE THE SECOND FLUID FLOWING THERETHROUGH TO BECOME ENRICHED AND THE FIRST FLUID FLOWING THERETHROUGH TO BECOME IMPOVERISHED WITH RESPECT TO SAID ISOTOPE; (E) TRANSFERRING
Claim 2
Independent Claim
171 words
A METHOD OF PRODUCING A SUBSTANCE CONTAINING CONCENTRATED THEREIN AN ISOTOPE OF AN ELEMENT BY EXCHANGING, AT TWO DIFFERENT TEMPERATURES, SAID ISOTOPE WITH ANOTHER ISOTOPE OF THE SAME ELEMENT BETWEEN CHEMICALLY DIFFERENT FLUID SUBSTANCES WHICH ARE PHYSICALLY SEPARABLE FROM EACH OTHER AND WHICH ARE CAPABLE OF CONTAINING EACH OF SAID ISOTOPES, WHICH METHOD COMPRISES (A) ESTABLISHING A COUNTERCURRENT FLOW OF THE TWO SUBSTANCES IN A SERIES OF AT LEAST TWO PAIRS OF EXCHANGE UNITS; (B) MIXING SAID TWO FLUIDS IN EACH OF SAID EXCHANGE UNITS TO CAUSE AN EXCHANGE OF ISOTOPES OF THE ELEMENT BETWEEN THE TWO FLUIDS; (C) MAINTAINING A FIRST UNIT OF EACH PAIR AT A TEMPERATURE TO CAUSE THE FIRST FLUID FLOWING THERETHROUGH TO BECOME ENRICHED AND THE SECOND FLUID FLOWING THERETHROUGH TO BECOME IMPOVERISHED WITH RESPECT TO SAID ISOTOPE; AND (D) MAINTAINING THE SECOND UNIT OF EACH PAIR AT A TEMPERATURE TO CAUSE THE SECOND FLUID FLOWING THERETHROUGH TO BECOME ENRICHED AND THE FIRST FLUID FLOWING THERETHROUGH TO BECOME IMPOVERISHED WITH RESPECT TO SAID ISOTOPE; (E) TRANSFERRING
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |