Patent US3492092A successfully refreshed from Google Patents.
US3492092A
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Ion exchange process for treating crude mineral solutions
Assignee: Chemical Separations Corp
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Filing: 1966-04-04
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Granted: 1970-01-27
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Irwin R Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:46
CPC Classifications
C; C01; C01D; C01D9/00; C01D9/04; B; B01; B01J; B01J47/00; B01J47/10; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/26; C01B25/30; C01B7/00; C01B7/01; C01B7/03; C01D5/00; C01D5/06; C01D5/10; C01D7/00; C01D7/02; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 0
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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) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |