Patent US3578394A successfully refreshed from Google Patents.
US3578394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aqueous manganous chloride solutions
Assignee: Morton International LLC
•
Filing: 1969-12-05
•
Granted: 1971-05-11
•
Expires: 1989-12-05
Abstract
Abstract A PROCESS FOR PREPARING AQUEOUS SOLUTIONS OF MANGANOUS CHLORIDE ESSENTIALLY FREE FROM HEAVY METAL CONTAMINANTS BY THE REACTION OF MANGANESE ORE WITH AN AQUEOUS SOLUTION OF FERROUS CHLORIDE FOLLOWED BY REMOVAL OF IRON AND HEAVY METALS BY TREATMENT WITH SULFIDE ION. THE MANGANOUS CHLORIDE SOLUTIONS SO PREPARED ARE SUITABLE FOR FURTHER CHEMICAL PROCESSING OR MAY BE USED TO PREPARE PURE MANGANESE METAL BY ELECTROLYSIS OR OTHER METHODS. IRON HYDROXIDE MAY BE RECOVERED SEPARATELY AS A BY-PRODUCT OF THIS PROCESS FOR USE IN PIGMENTS OR AS A RAW MATERIAL CHARGE FOR THE PRODUCTION OF STEEL.
Inventors
- 👤 Jay W Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:21
CPC Classifications
C; C01; C01G; C01G45/00; C01G45/06; C01G45/07
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |