Patent US5330507A successfully refreshed from Google Patents.
Patent US3051548A successfully refreshed from Google Patents.
US3051548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating ores containing clays
Assignee: US Borax Inc
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Filing: 1958-10-30
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Granted: 1962-08-28
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Expires: 1978-10-30
Abstract
No abstract record available.
Inventors
- 👤 Wilson William Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:54
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/04; C01D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE METHOD OF TREATING SYLVINITE ORES CONTAINING SLIME-FORMING CLAY TO RENDER SAID CLAY HARD AND NONDISPERSIBLE WHICH COMPRISES HEATING AND ORE AT A TEMPERATURE OF FROM ABOUT 400 TO ABOUT 1000* F. UNDER REDUCING CONDITIONS AND THEN SEPARATING THE CLAY FROM THE ORE VALUES.
Claim 2
Independent Claim
44 words
THE METHOD OF TREATING SYLVINITE ORES CONTAINING SLIME-FORMING CLAY TO RENDER SAID CLAY HARD AND NONDISPERSIBLE WHICH COMPRISES HEATING AND ORE AT A TEMPERATURE OF FROM ABOUT 400 TO ABOUT 1000* F. UNDER REDUCING CONDITIONS AND THEN SEPARATING THE CLAY FROM THE ORE VALUES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |