US2711484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of radioactive objects
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-01-26
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Granted: 1955-06-21
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Expires: 1973-01-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Carroll L Knapp
- 👤 James F Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:22
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; Y; Y10; Y10S; Y10S148/00; Y10S148/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A PROCESS FOR DETERMING THE AMOUT OF WEAR OF A LEAD CONTAININGMETAL SURFACE WHICH COMPRISES ELECTROPLATING A THIN FILM OF MIXTURE OF LEAD AND ABOUT 10-3% OF RADIUM D ON SAID LEAD CONTAINING SURFACE, HEATING SAID ELECTROPLATED SURFACE AT A TEMPERATURE OF ABOUT 300* C. FOR AS PERIOD OF A BOUT 1 TO 10 DAYS, STRIPPING THE SURFACE PLATING FROM THE RESULTING ACTIVATED SURFACE, POLISHING THE STRIPPED ACTIVATED SURFACE TO RESTORE ITS ORIGINAL SURFACE CHARACTERISTICS, SUBJECTING THE ACTIVATED SURFACE TO CORROSION IN CONTACT WITH A FLUID CAPABLE OF CARRYING RADIOACTIVE WEAR DEBRIS, AND MEASURING THE RADIOCATIVITY OF SAID FLUID.
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) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |