Patent US3117372A successfully refreshed from Google Patents.
US3117372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized rare earth oxides for a control rod and method of preparation
Assignee: Individual
•
Filing: 1962-11-15
•
Granted: 1964-01-14
•
Expires: 1982-11-15
Abstract
No abstract record available.
Inventors
- 👤 Robert A Mcnees
- 👤 Ralph A Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:37
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/24; C; C01; C01F; C01F17/00; C01F17/30; C01F17/32; G21C21/00; G21C21/18; G21C7/34; C01P; C01P2002/00; C01P2002/30; C01P2002/34; C01P2004/00; C01P2004/50; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A STABLE OXIDE OF THE FORMULA
Claim 2
Dependent Claim
6 words
A STABLE OXIDE OF THE FORMULA
Claim 3
Independent Claim
148 words
THE METHOD OF PREPARING A CONTROL ROD FOR A NUCLEAR REACTOR WHICH COMPRISES MIXING FINELY DIVIDED EUROPIUM OXIDE WITH A FINELY DIVIDED ADDITIVE OXIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN OXIDE AT A PROPORATION OF 21 TO 23 WEIGHT PERCENT OF THE RESULTING MIXTURE AND MOLYBDENUM OXIDE AT A PROPORTION OF 14 TO 16 WEIGHT PERCENT OF THE RESULTING MIXTURE, COMPRESSING THE RESULTING MIXTURE, FIRING THE RESULTING COMPACT AT A TEMPERATURE OF AT LEAST 1400*C. IN AN OXYGEN-CONTAINING ATMOSPHERE, COMMINUTING THE RESULTING HYDRATION-RESISTANT OXIDE COMPACT, WHEREBY FINELY DIVIDED STABLE OXIDE PARTICLES ARE FORMED, MIXING SAID STABLE OXIDE PARTICLES WITH FINELY DIVIDED STAINLESS STEEL PARTICLES, AT A PROPORTION NOT EXCEEDING 50 WEIGHT PERCENT STABLE OXIDE IN THE RESULTING MIXTURE, COMPRESSING THE RESULTING STAINLESS STEEL-STABLE OXIDE MIXTURE, HEATING THE RESULTING STAINLESS STEEL-STABLE OXIDE COMPACT IN VACUO AT A TEMPERATURE OF AT LEAST 1230*C. AND CLADDING THE RESULTING SINTERED COMPACT.
Claim 4
Independent Claim
148 words
THE METHOD OF PREPARING A CONTROL ROD FOR A NUCLEAR REACTOR WHICH COMPRISES MIXING FINELY DIVIDED EUROPIUM OXIDE WITH A FINELY DIVIDED ADDITIVE OXIDE SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN OXIDE AT A PROPORATION OF 21 TO 23 WEIGHT PERCENT OF THE RESULTING MIXTURE AND MOLYBDENUM OXIDE AT A PROPORTION OF 14 TO 16 WEIGHT PERCENT OF THE RESULTING MIXTURE, COMPRESSING THE RESULTING MIXTURE, FIRING THE RESULTING COMPACT AT A TEMPERATURE OF AT LEAST 1400*C. IN AN OXYGEN-CONTAINING ATMOSPHERE, COMMINUTING THE RESULTING HYDRATION-RESISTANT OXIDE COMPACT, WHEREBY FINELY DIVIDED STABLE OXIDE PARTICLES ARE FORMED, MIXING SAID STABLE OXIDE PARTICLES WITH FINELY DIVIDED STAINLESS STEEL PARTICLES, AT A PROPORTION NOT EXCEEDING 50 WEIGHT PERCENT STABLE OXIDE IN THE RESULTING MIXTURE, COMPRESSING THE RESULTING STAINLESS STEEL-STABLE OXIDE MIXTURE, HEATING THE RESULTING STAINLESS STEEL-STABLE OXIDE COMPACT IN VACUO AT A TEMPERATURE OF AT LEAST 1230*C. AND CLADDING THE RESULTING SINTERED COMPACT.
References Cited (Backward Citations)
US3031395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |