US3288636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating uranium alloy members
Assignee: Interatom Internationale Atomreaktorbau GmbH
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Filing: 1963-06-21
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Granted: 1966-11-29
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Expires: 1983-06-21
Abstract
No abstract record available.
Inventors
- 👤 Staubwasser Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70425; G03F7/70433; C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C25; C25D; C25D5/00; C25D5/34; C25D5/46; G21; G21C; G21C21/00; G21C21/02; G21C21/14; G21C3/00; G21C3/02; G21C3/04; G21C3/16; G21C3/20; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR APPLYING A FIRMLY ADHERENT CHROMOUM INTERMEDIATE LAYER TO THE FUEL OF A FUEL ELEMENT FOR A NUCLEAR REACTOR WHEREIN THE FUEL COMPRISING A U-3.5 MO-0.1 AL ALLOY MEMBER, THE STEP OF SAID PROCESS COMPRISING CLEANING SAID URANIUM ALLOY MEMBER, AND IMMERSING THE CLEANED URANIUM ALLOY MEMBER FOR APPROXIMATELY 1 TO 3 MINUTES INTO AN AQUEOUS SOLUTION AT A TEMPERATURE OF APPROXIMATELY 20*C.-30*C. AND A PH VALUE <1, SAID SOLUTION COMPRISING APPROXIMATELY 70 GRAMS PER LITER OF CHROMIUM OXIDE CRO3, APPROXIMATELY 2.5 GRAMS PER LITER NAF, APPROXIAMATELY 2.5 GRAMS PER LITER NACL, APPROXIMATELY 5 CUBIC CENTIMETERS PER LITER H2SO4, SO THAT A METALLIC CHROMIUM LAYER IS FORMED ON THE ALLOY MEMBER BY A CHEMICAL DISPLACEMENT.
Claim 2
Dependent Claim
117 words
A PROCESS FOR APPLYING A FIRMLY ADHERENT CHROMOUM INTERMEDIATE LAYER TO THE FUEL OF A FUEL ELEMENT FOR A NUCLEAR REACTOR WHEREIN THE FUEL COMPRISING A U-3.5 MO-0.1 AL ALLOY MEMBER, THE STEP OF SAID PROCESS COMPRISING CLEANING SAID URANIUM ALLOY MEMBER, AND IMMERSING THE CLEANED URANIUM ALLOY MEMBER FOR APPROXIMATELY 1 TO 3 MINUTES INTO AN AQUEOUS SOLUTION AT A TEMPERATURE OF APPROXIMATELY 20*C.-30*C. AND A PH VALUE <1, SAID SOLUTION COMPRISING APPROXIMATELY 70 GRAMS PER LITER OF CHROMIUM OXIDE CRO3, APPROXIMATELY 2.5 GRAMS PER LITER NAF, APPROXIAMATELY 2.5 GRAMS PER LITER NACL, APPROXIMATELY 5 CUBIC CENTIMETERS PER LITER H2SO4, SO THAT A METALLIC CHROMIUM LAYER IS FORMED ON THE ALLOY MEMBER BY A CHEMICAL DISPLACEMENT.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |