US3076546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vermiculite concentration
Assignee: Zonolite Co
•
Filing: 1959-04-20
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Granted: 1963-02-05
•
Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 George E Ziegler
- 👤 John C Hayes
- 👤 Antoine M Gaudin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:27
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; Y; Y10; Y10S; Y10S106/00; Y10S106/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS OF CONCENTRATING VERMICULITE ORE TO SEPARATE THE VERMICULITE FROM GANGUE WITH WHICH IT IS ASSOCIATED IN THE ORE, COMPRISING THE STEPS OF CONTACTING VERMICULITE CRUDE ORE PARTICLES CONTAINING GANGUE WITH A BRINE SOLUTION UNTIL SALT FROM SAID SOLUTION HAS PENETRATED THE VERMICULITE PORTION OF THE ORE PARTICLES, THE SOAKING THE CRUDE ORE PARTICLES IN WATER TO CAUSE SWELLING OF THE
Claim 2
Dependent Claim
62 words
A PROCESS OF CONCENTRATING VERMICULITE ORE TO SEPARATE THE VERMICULITE FROM GANGUE WITH WHICH IT IS ASSOCIATED IN THE ORE, COMPRISING THE STEPS OF CONTACTING VERMICULITE CRUDE ORE PARTICLES CONTAINING GANGUE WITH A BRINE SOLUTION UNTIL SALT FROM SAID SOLUTION HAS PENETRATED THE VERMICULITE PORTION OF THE ORE PARTICLES, THE SOAKING THE CRUDE ORE PARTICLES IN WATER TO CAUSE SWELLING OF THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |