US3185652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory rare earth material
Assignee: Nucor Corp
•
Filing: 1960-04-29
•
Granted: 1965-05-25
•
Expires: 1980-04-29
Abstract
No abstract record available.
Inventors
- 👤 Eugene V Kleber
- 👤 Ronald C Vickery
- 👤 Hubert M Muir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:32
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; G; G21; G21C; G21C7/00; G21C7/06; G21C7/24; G21F; G21F1/00; G21F1/02; G21F1/06; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A NUCLEAR REACTOR CONTROL ELEMENT CONSISTING ESSENTIALLY OF AT LEAST THREE PERCENT BY WEIGHT OF AN ELEMENT HAVING AN ATOMIC NUMBER WITHIN THE GROUP CONSISTING OF ELEMENTS HAVING NUMBERS 21, 39 AND 57 TO 71 AND AT LEAST THREE PERCENT BY WEIGHT OF AN OXIDE OF AN ELEMENT WITHIN SAID GROUP.
Claim 2
Dependent Claim
51 words
A NUCLEAR REACTOR CONTROL ELEMENT CONSISTING ESSENTIALLY OF AT LEAST THREE PERCENT BY WEIGHT OF AN ELEMENT HAVING AN ATOMIC NUMBER WITHIN THE GROUP CONSISTING OF ELEMENTS HAVING NUMBERS 21, 39 AND 57 TO 71 AND AT LEAST THREE PERCENT BY WEIGHT OF AN OXIDE OF AN ELEMENT WITHIN SAID GROUP.
Claim 3
Dependent Claim
46 words
A DUCTILE REFRACTORY COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A HOMOGENEOUS MELT OF AT LEAST THREE PERCENT BY WEIGHT OF AN ELEMENT HAVING AN ATOMIC NUMBER WITHIN THE GROUP HAVING NUMBERS 21, 39 AND 57 TO 71 AND AN OXIDE OF AN ELEMENT WITHIN SAID GROUP.
Claim 4
Dependent Claim
46 words
A DUCTILE REFRACTORY COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A HOMOGENEOUS MELT OF AT LEAST THREE PERCENT BY WEIGHT OF AN ELEMENT HAVING AN ATOMIC NUMBER WITHIN THE GROUP HAVING NUMBERS 21, 39 AND 57 TO 71 AND AN OXIDE OF AN ELEMENT WITHIN SAID GROUP.
Claim 5
Dependent Claim
49 words
A NUCLEAR REACTOR SHEILD CONSISTING ESSENTIALLY OF AT LEAST THREE PERCENT BY WEIGHT OF AN ELEMENT HAVING AN ATOMIC NUMBER WITHIN THE GROUP OF ELEMENTS HAVING NUMBERS 21, 39 AND 57 TO 71 AND AT LEAST THREE PERCENT BY WEIGHT OF AN OXIDE OF AN ELEMENT WITHIN SAID GROUP.
Claim 6
Dependent Claim
49 words
A NUCLEAR REACTOR SHEILD CONSISTING ESSENTIALLY OF AT LEAST THREE PERCENT BY WEIGHT OF AN ELEMENT HAVING AN ATOMIC NUMBER WITHIN THE GROUP OF ELEMENTS HAVING NUMBERS 21, 39 AND 57 TO 71 AND AT LEAST THREE PERCENT BY WEIGHT OF AN OXIDE OF AN ELEMENT WITHIN SAID GROUP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |