US2942938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dissolving massive plutonium
Assignee: Individual
•
Filing: 1952-12-09
•
Granted: 1960-06-28
•
Expires: 1972-12-09
Abstract
No abstract record available.
Inventors
- 👤 John F Facer
- 👤 Ward L Lyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:54
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; C; C01; C01G; C01G56/00; C01G56/004; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
63 words
A PROCESS OF DISSOLVING MASSIVE PLUTONIUM, COMPRISING HEATING THE PLUTONIUM AND WATER UNDER SUPERATMOSPHERIC PRESSURE TO ABOUT 140 TO 150*C., MAINTAINING THE PRESSURE WHILE DISCONTINUING HEAT SUPPLY WHEREBY OXIDATION OF THE PLUTONIUM TAKES PLACE AND A POWDERY MATERIAL IS FORMED, AND TREATING THE POWDER OBTAINED WITH CONCENTRATED HOT NITRIC ACID WHICH CONTAINS A SMALL QUANTITY OF HYDROFLUORIC ACID WHEREBY ALL PLUTONIUM IS DISSOLVED.
Claim 2
Dependent Claim
63 words
A PROCESS OF DISSOLVING MASSIVE PLUTONIUM, COMPRISING HEATING THE PLUTONIUM AND WATER UNDER SUPERATMOSPHERIC PRESSURE TO ABOUT 140 TO 150*C., MAINTAINING THE PRESSURE WHILE DISCONTINUING HEAT SUPPLY WHEREBY OXIDATION OF THE PLUTONIUM TAKES PLACE AND A POWDERY MATERIAL IS FORMED, AND TREATING THE POWDER OBTAINED WITH CONCENTRATED HOT NITRIC ACID WHICH CONTAINS A SMALL QUANTITY OF HYDROFLUORIC ACID WHEREBY ALL PLUTONIUM IS DISSOLVED.
Claim 3
Independent Claim
25 words
A METHOD OF DISSOLVING MASSIVE PLUTONIUM COMPRISING CONTACTING THE PLUTONIUM WITH A HOT MIXTURE OF CONCENTRATED NITRIC ACID AND A SMALL QUANTITY OF HYDROFLURIC ACID.
Claim 4
Independent Claim
25 words
A METHOD OF DISSOLVING MASSIVE PLUTONIUM COMPRISING CONTACTING THE PLUTONIUM WITH A HOT MIXTURE OF CONCENTRATED NITRIC ACID AND A SMALL QUANTITY OF HYDROFLURIC ACID.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |