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Patent US2836548A successfully refreshed from Google Patents.
US2836548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of metallic uranium
Assignee: Individual
•
Filing: 1944-10-25
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Granted: 1958-05-27
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Expires: 1964-10-25
Abstract
No abstract record available.
Inventors
- 👤 Allen G Gray
- 👤 Ernest W Schweikher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:17
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/10; C25; C25D; C25D3/00; C25D3/02; C25D3/46; C25D5/00; C25D5/34; C25D5/46; G; G21; G21C; G21C21/00; G21C21/02; G21C21/14; G21C3/00; G21C3/02; G21C3/04; G21C3/16; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF PREPARING METALLIC URANIUM FOR ELECTROPLATING, WHICH COMPRISES TREATING THE SURFACE OF THE URANIUM FOR ABOUT ONE MINUTE IN AQUEOUS 40% TO 55% NITRIC ACID SOLUTION TO REMOVE FOREIGN MATERIAL AND EXPOSE AND CLEAN METAL SURFACE, TREATING THE CLEANED SURFACE WITH AQUEOUS 30% TO 40% HYDROCHLORIC ACID UNTIL IT IS ETCHED BLACK, PROMPTLY WITHDRAWING IT FROM THE HYDROCHLORIC ACID AND TREATING IT WITH AQUEOUS 40% TO 55% NITRIC ACID FOR A FEW SECONDS TO REMOVE THE BLACK COLORATION AND PROVIDE A GRAY ETCHED METAL SURFACE.
Claim 2
Independent Claim
87 words
THE METHOD OF PREPARING METALLIC URANIUM FOR ELECTROPLATING, WHICH COMPRISES TREATING THE SURFACE OF THE URANIUM FOR ABOUT ONE MINUTE IN AQUEOUS 40% TO 55% NITRIC ACID SOLUTION TO REMOVE FOREIGN MATERIAL AND EXPOSE AND CLEAN METAL SURFACE, TREATING THE CLEANED SURFACE WITH AQUEOUS 30% TO 40% HYDROCHLORIC ACID UNTIL IT IS ETCHED BLACK, PROMPTLY WITHDRAWING IT FROM THE HYDROCHLORIC ACID AND TREATING IT WITH AQUEOUS 40% TO 55% NITRIC ACID FOR A FEW SECONDS TO REMOVE THE BLACK COLORATION AND PROVIDE A GRAY ETCHED METAL SURFACE.
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |