US3272756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive waste disposal using colemanite
Assignee: Individual
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Filing: 1965-08-31
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Granted: 1966-09-13
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Expires: 1985-08-31
Abstract
No abstract record available.
Inventors
- 👤 John D Kaser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:27
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR TREATING WASTE LIQUIDS RESULTING FROM THE CHEMICAL REPROCESSING OF IRRADIATED NUCLEAR FUEL WHICH COMPRISES: (A) ADDING FINELY DIVIDED COLEMANITE TO SAID WASTE LIQUID, THEREBY FORMING A SLURRY; (B) SUBJECTING SAID SLURRY TO SPRAY CALCINATION AT A WALL TEMPERATURE IN THE RANGE 600*C. TO 750*C. THEREBY FORMING A FINELY DIVIDED SOLID RESIDUE AND WASTE GASES; AND (C) SEPARATING SAID SOLID RESIDUE FROM SAID GASES; THE AMOUNT OF COLEMANITE BEING SUFFICIENT TO FORM WITH THE CALCINED CONSTITUENTS OF SAID WASTE, A PRODUCT HAVING A MELTING POINT OF LESS THAN 1000*C.
Claim 2
Dependent Claim
91 words
A PROCESS FOR TREATING WASTE LIQUIDS RESULTING FROM THE CHEMICAL REPROCESSING OF IRRADIATED NUCLEAR FUEL WHICH COMPRISES: (A) ADDING FINELY DIVIDED COLEMANITE TO SAID WASTE LIQUID, THEREBY FORMING A SLURRY; (B) SUBJECTING SAID SLURRY TO SPRAY CALCINATION AT A WALL TEMPERATURE IN THE RANGE 600*C. TO 750*C. THEREBY FORMING A FINELY DIVIDED SOLID RESIDUE AND WASTE GASES; AND (C) SEPARATING SAID SOLID RESIDUE FROM SAID GASES; THE AMOUNT OF COLEMANITE BEING SUFFICIENT TO FORM WITH THE CALCINED CONSTITUENTS OF SAID WASTE, A PRODUCT HAVING A MELTING POINT OF LESS THAN 1000*C.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |