US3364148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High silica matrix radioactive source and method of preparation
Assignee: Atlantic Research Corp
•
Filing: 1964-08-26
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Granted: 1968-01-16
•
Expires: 1984-08-26
Abstract
No abstract record available.
Inventors
- 👤 Kivel Joseph
- 👤 Manning Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:06
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
A SOURCE OF RADIOACTIVE ENERGY COMPRISING AN INSOLUBLE RADIOACTIVE MATERIAL ENCLOSED SUBSTANTIALLY WITHIN THE INTERNAL MASS OF A HEAT FUSIBLE, CONTINUOUS MATRIX COMPRISING AT LEAST 92% BY WEIGHT SILICA, THE PERIPHERAL PORTION OF SAID MATRIX BEING SUBSTANTIALLY FREE OF SAID RADIOACTIVE MATERIAL.
Claim 2
Dependent Claim
42 words
A SOURCE OF RADIOACTIVE ENERGY COMPRISING AN INSOLUBLE RADIOACTIVE MATERIAL ENCLOSED SUBSTANTIALLY WITHIN THE INTERNAL MASS OF A HEAT FUSIBLE, CONTINUOUS MATRIX COMPRISING AT LEAST 92% BY WEIGHT SILICA, THE PERIPHERAL PORTION OF SAID MATRIX BEING SUBSTANTIALLY FREE OF SAID RADIOACTIVE MATERIAL.
Claim 3
Dependent Claim
82 words
A PROCESS OF MAKING A RADIOACTIVE SOURCE COMPRISING INTRODUCING A LIQUID SOLUTION OF RADIOACTIVE MATERIAL INTO THE PORES OF A HEAT-FUSIBLE, POROUS MATRIX CONTAINING AT LEAST 92% BY WEIGHT SILICA; FORCING SAID SOLUTION INWARDLY INTO SAID POROUS MATRIX BY CONTACTING SAID MATRIX WITH A SECOND LIQUID FREE OF RADIOACTIVE MATERIAL; EVAPORATING SAID SECOND LIQUID AND THE SOLVENT FOR THE RADIOACTIVE MATERIAL; AND SEALING THE RADIOACTIVE MATERIAL WITHIN THE MATRIX BY APPLYING HEAT TO SAID MATRIX TO SEAL AT LEAST THE PERIPHERAL PORES.
Claim 4
Dependent Claim
82 words
A PROCESS OF MAKING A RADIOACTIVE SOURCE COMPRISING INTRODUCING A LIQUID SOLUTION OF RADIOACTIVE MATERIAL INTO THE PORES OF A HEAT-FUSIBLE, POROUS MATRIX CONTAINING AT LEAST 92% BY WEIGHT SILICA; FORCING SAID SOLUTION INWARDLY INTO SAID POROUS MATRIX BY CONTACTING SAID MATRIX WITH A SECOND LIQUID FREE OF RADIOACTIVE MATERIAL; EVAPORATING SAID SECOND LIQUID AND THE SOLVENT FOR THE RADIOACTIVE MATERIAL; AND SEALING THE RADIOACTIVE MATERIAL WITHIN THE MATRIX BY APPLYING HEAT TO SAID MATRIX TO SEAL AT LEAST THE PERIPHERAL PORES.
References Cited (Backward Citations)
US3141852A
Cited
US3147225A
Cited
US3132033A
Cited
US3116131A
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US3167504A
Cited
US3114716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |