US3167479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making enriched radioisotopes by cation fixation
Assignee: IIT Research Institute
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Filing: 1963-11-05
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Granted: 1965-01-26
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Expires: 1983-11-05
Abstract
No abstract record available.
Inventors
- 👤 Paul Y Feng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:54
CPC Classifications
G; G21; G21G; G21G1/00; G21G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF MAKING RADIOISOTOPES WHICH COMPRISES THE STEPS OF: INTRODUCING CATIONS TO BE MADE RADIOACTIVE TO AN INORGANIC CATION EXCHANGE MATERIAL WHICH IS RESISTANT TO NEUTRONS AND OTHER IONIZING RADIATION AND WHICH IS FURTHER CHARACTERIZED BY THE ABILITY TO FIX SUCH CATIONS WITHIN ITS LATTICE STRUCTURE; FIXING SAID CATIONS IN SAID CATION EXCHANGE MATERIAL; REMOVING NOT-FIXED CATIONS; IRRADIATING SAID ION EXCHANGE MATERIAL-FIXED CATION COMPOSITE WITH NEUTRONS TO PRODUCE RADIOACTIVE PRODUCT NUCLEI OF SAID CATIONS AND CONCURRENTLY DEFIXING SUCH RADIOACTIVE PRODUCT NUCLEI; AND SEPARATING SUCH RADIOACTIVE NUCLEI FROM THE ION EXCHANGE MASS.
Claim 2
Independent Claim
92 words
THE METHOD OF MAKING RADIOISOTOPES WHICH COMPRISES THE STEPS OF: INTRODUCING CATIONS TO BE MADE RADIOACTIVE TO AN INORGANIC CATION EXCHANGE MATERIAL WHICH IS RESISTANT TO NEUTRONS AND OTHER IONIZING RADIATION AND WHICH IS FURTHER CHARACTERIZED BY THE ABILITY TO FIX SUCH CATIONS WITHIN ITS LATTICE STRUCTURE; FIXING SAID CATIONS IN SAID CATION EXCHANGE MATERIAL; REMOVING NOT-FIXED CATIONS; IRRADIATING SAID ION EXCHANGE MATERIAL-FIXED CATION COMPOSITE WITH NEUTRONS TO PRODUCE RADIOACTIVE PRODUCT NUCLEI OF SAID CATIONS AND CONCURRENTLY DEFIXING SUCH RADIOACTIVE PRODUCT NUCLEI; AND SEPARATING SUCH RADIOACTIVE NUCLEI FROM THE ION EXCHANGE MASS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |