US2819944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification process
Assignee: Individual
•
Filing: 1954-01-26
•
Granted: 1958-01-14
•
Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Howard L Wibbles
- 👤 Earl I Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:40
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; C01; C01G; C01G39/00; C01G39/003; C22B3/00; C22B3/20; C22B3/22; C22B3/24; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS OF REMOVING MOLYBDENUM HETEROPOLY ACIDS FROM AN ETHER SOLUTION CONTAINING SAID ACIDS TOGETHER WITH URANYL NITRATE COMPRISING CONTACTING SAID ETHER SOLUTION WITH ACTIVATED CHARCOAL, AND SEPARATING SAID CHARCOAL CONTAINING SAID MOLYBDENUM HETEROPOLY ACIDS FROM THE ETHER SOLUTION CONTAINING SAID URANYL NITRATE.
Claim 2
Dependent Claim
43 words
A PROCESS OF REMOVING MOLYBDENUM HETEROPOLY ACIDS FROM AN ETHER SOLUTION CONTAINING SAID ACIDS TOGETHER WITH URANYL NITRATE COMPRISING CONTACTING SAID ETHER SOLUTION WITH ACTIVATED CHARCOAL, AND SEPARATING SAID CHARCOAL CONTAINING SAID MOLYBDENUM HETEROPOLY ACIDS FROM THE ETHER SOLUTION CONTAINING SAID URANYL NITRATE.
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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |