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US3485356A
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US
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Method for the treatment of ores containing slime-forming impurities
Assignee: ALSACE MINES POTASSE
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Filing: 1968-04-08
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Granted: 1969-12-23
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Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 Richard Burr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:52
CPC Classifications
B; B03; B03B; B03B9/00; B03B1/00; B03B1/02; B03B5/00; B03B5/28; B03B5/30; B03B5/32; B03B5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377524A
Cited
US2965522A
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US2970689A
Cited
US3037624A
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US3049467A
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US3374885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |