US3527576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction-crystallization method
Assignee: United States Department of the Navy
•
Filing: 1968-06-11
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Granted: 1970-09-08
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Expires: 1988-06-11
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Kaplan
- 👤 Joshua D Upton Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:03
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/06; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0219; B01D11/0292; B01D11/0296
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US495757A
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US525662A
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US1837493A
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US1794874A
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US1942848A
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GB578111A
Cited
US2876182A
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US2833824A
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DE1057572B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |