US2695100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sylvite concentration process
Assignee: Armour and Co
•
Filing: 1952-01-12
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Granted: 1954-11-23
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Expires: 1972-01-12
Abstract
No abstract record available.
Inventors
- 👤 Jr James A Barr
- 👤 Fred H Bunge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:33
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/016; B03D1/01; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN THE PROCESS OF CONCENTRATING SYLVITE FROM A SYLVINITE ORE IN A PULP FORMED WITH A SATURATED AQUEOUS SOLUTION OF THE SOLUBLE ORE CONSTITUENTS, THE STEPS OF CONDITIONING SAID PULP WITH A POLYMER OF DEHYDRATED STARCH AND A HIGHER ALIPHATIC CATIONIC COLLECTOR AND SEPARATING SYLVITE FROM THE ORE BY FROTH FLOTATION.
Claim 2
Dependent Claim
51 words
IN THE PROCESS OF CONCENTRATING SYLVITE FROM A SYLVINITE ORE IN A PULP FORMED WITH A SATURATED AQUEOUS SOLUTION OF THE SOLUBLE ORE CONSTITUENTS, THE STEPS OF CONDITIONING SAID PULP WITH A POLYMER OF DEHYDRATED STARCH AND A HIGHER ALIPHATIC CATIONIC COLLECTOR AND SEPARATING SYLVITE FROM THE ORE BY FROTH FLOTATION.
References Cited (Backward Citations)
US2288497A
Cited
US2322789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |