US3177068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of beryllium from bertrandite ore
Assignee: Dow Chemical Co
•
Filing: 1963-02-06
•
Granted: 1965-04-06
•
Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 William A Mod
- 👤 Charles W Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:41
CPC Classifications
C; C22; C22B; C22B35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR THE RECOVERY OF BERYLLIUM VALUES FROM FLUORIDE ORE WHICH CONTAINS BERTRANDITE ORE COMPRISING MIXING THE ORE WITH AN AQUEOUS SOLUTION OF A STRONG MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, HYDROBROMIC, SULFURIC, NITRIC, AND PHOSPHORIC ACIDS, AT A TEMPERATURE OF FROM ABOUT 70 TO ABOUT 120 DEGREES CENTRIGRADE, THEREBY CONVERTING THE BERYLLIUM IN THE ORE TO A SOLUBLE SALT AND DISSOLVING THE BERYLLIUM SALT IN THE ACID SOLUTION, AND RECOVERING THE BERYLLIUM VALUES FROM THE ACID SOLUTION.
Claim 2
Dependent Claim
82 words
A PROCESS FOR THE RECOVERY OF BERYLLIUM VALUES FROM FLUORIDE ORE WHICH CONTAINS BERTRANDITE ORE COMPRISING MIXING THE ORE WITH AN AQUEOUS SOLUTION OF A STRONG MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF HYDROCHLORIC, HYDROBROMIC, SULFURIC, NITRIC, AND PHOSPHORIC ACIDS, AT A TEMPERATURE OF FROM ABOUT 70 TO ABOUT 120 DEGREES CENTRIGRADE, THEREBY CONVERTING THE BERYLLIUM IN THE ORE TO A SOLUBLE SALT AND DISSOLVING THE BERYLLIUM SALT IN THE ACID SOLUTION, AND RECOVERING THE BERYLLIUM VALUES FROM THE ACID SOLUTION.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |