Patent US3525434A successfully refreshed from Google Patents.
US3525434A
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US
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Methods for separating chloride,sulfate and carbonate salts and the like
Assignee: DONALD E GARRETT
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Filing: 1968-09-30
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Granted: 1970-08-25
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Expires: 1988-09-30
Abstract
No abstract record available.
Inventors
- 👤 Donald E Garrett
- 👤 William R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:57
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/001; B03D1/004; B03D1/008; B03D1/01; B03D1/012; B03D2203/00; B03D2203/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1102874A
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US2222330A
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US2333334A
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US2349393A
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US2310315A
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US2724499A
Cited
US2765077A
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US2766884A
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US2839192A
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US3016143A
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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) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |