US2859095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing cm244 and cm245
Assignee: Individual
•
Filing: 1957-09-27
•
Granted: 1958-11-04
•
Expires: 1977-09-27
Abstract
No abstract record available.
Inventors
- 👤 Winston M Manning
- 👤 Martin H Studier
- 👤 Diamond Herbert
- 👤 Paul R Fieids
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:24
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001; C01G56/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS OF PRODUCING CM244 AND CM245 COMPRISING BOMBARDING PU239-CONTAINING MATERIAL WITH NEUTRONS OF THERMAL ENERGY AND A FLUX OF AT LEAST 1014 NUTRONS/CM.2/ SEC. FOR A TIME SUFFICIENT TO OBTAIN AN INTEGRATED FLUX OF AT LEAST 1021 NEUTRONS/CM.2, DISSOLVING THE BOMBARDED MATERIAL IN HYDROCHLORIC ACID, OXIDIZING THE PLUTONIUM TO AT LEAST ITS TETRAVALENT STATE, FLOWING THE SOLUTION THROUGH AN ANION EXCHANGE RESIN WHEREBY SAID PLUTONIUM VALUES ARE ADSORBED WHILE THE FISSION PRODUCTS AND TRANSPLUTONIUM ELEMENTS FORMED REMAIN IN THE AQUEOUS SOLUTION LEAVING SAID RESIN AS EFFLUENT, CONTACTING SAID EFFLUENT WITH A CATION EXCHANGE RESIN WHEREBY SAID VALUES OF THE TRANSPLUTONIUM ELEMENTS ARE ADSORBED WHILE SAID FISSION PRODUCT VALUES REMAIN IN THE AQUEOUS SOLUTION LEAVING THE RESIN, CONTACTING THE CATION EXCHANGE RESIN WITH AN AQUEOUS CITRATE SOLUTION WHEREBY SAID TRANSPLUTONIUM ELEMENTS ARE ELUTED IN THE ORDER OF DECREASING ATOMIC WEIGHT, AND COLLECTING SAID TRANSPLUTONIUM-CONTAINING CITRATE ELUATES FRACTIONALLY.
Claim 2
Dependent Claim
147 words
A PROCESS OF PRODUCING CM244 AND CM245 COMPRISING BOMBARDING PU239-CONTAINING MATERIAL WITH NEUTRONS OF THERMAL ENERGY AND A FLUX OF AT LEAST 1014 NUTRONS/CM.2/ SEC. FOR A TIME SUFFICIENT TO OBTAIN AN INTEGRATED FLUX OF AT LEAST 1021 NEUTRONS/CM.2, DISSOLVING THE BOMBARDED MATERIAL IN HYDROCHLORIC ACID, OXIDIZING THE PLUTONIUM TO AT LEAST ITS TETRAVALENT STATE, FLOWING THE SOLUTION THROUGH AN ANION EXCHANGE RESIN WHEREBY SAID PLUTONIUM VALUES ARE ADSORBED WHILE THE FISSION PRODUCTS AND TRANSPLUTONIUM ELEMENTS FORMED REMAIN IN THE AQUEOUS SOLUTION LEAVING SAID RESIN AS EFFLUENT, CONTACTING SAID EFFLUENT WITH A CATION EXCHANGE RESIN WHEREBY SAID VALUES OF THE TRANSPLUTONIUM ELEMENTS ARE ADSORBED WHILE SAID FISSION PRODUCT VALUES REMAIN IN THE AQUEOUS SOLUTION LEAVING THE RESIN, CONTACTING THE CATION EXCHANGE RESIN WITH AN AQUEOUS CITRATE SOLUTION WHEREBY SAID TRANSPLUTONIUM ELEMENTS ARE ELUTED IN THE ORDER OF DECREASING ATOMIC WEIGHT, AND COLLECTING SAID TRANSPLUTONIUM-CONTAINING CITRATE ELUATES FRACTIONALLY.
References Cited (Backward Citations)
US2711362A
Cited
US2698290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |