US3281338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing ultra high purity plutonium metal
Assignee: Individual
•
Filing: 1966-04-20
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Granted: 1966-10-25
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Expires: 1986-04-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Leary
- 👤 Jr Lawrence J Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:59
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/02; C25C7/025; C25C3/00; C25C3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF REDUCING THE REFRACTORY METAL IMPURITIES IN THE ELECTROREFINING OPERATION OF PLUTONIUM METAL, THE IMPURITIES BEING INTRODUCED BY THE REFRACTORY METAL CATHODE, COMPRISING COATING THE CATHODE WITH AT LEAST ONE STABLE, ELECTRICALLY CONDUCTING COMPOUND, SAID COMPOUND BEING SELECTED FROM THE CLASS CONSISTING OF THE CARBIDES, NITRIDES, AND BORIDES OF TANTALUM, HAFNIUM, AND NIOBIUM.
Claim 2
Independent Claim
55 words
A METHOD OF REDUCING THE REFRACTORY METAL IMPURITIES IN THE ELECTROREFINING OPERATION OF PLUTONIUM METAL, THE IMPURITIES BEING INTRODUCED BY THE REFRACTORY METAL CATHODE, COMPRISING COATING THE CATHODE WITH AT LEAST ONE STABLE, ELECTRICALLY CONDUCTING COMPOUND, SAID COMPOUND BEING SELECTED FROM THE CLASS CONSISTING OF THE CARBIDES, NITRIDES, AND BORIDES OF TANTALUM, HAFNIUM, AND NIOBIUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |