US3424221A
Expired / Lapsed
US
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Apparatus and method for continuous crystallization by evaporation
Assignee: GENE W LUCE
•
Filing: 1966-06-06
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Granted: 1969-01-28
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Gene W Luce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:29
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0022; B01D9/0031; B01D9/0036; Y; Y10; Y10S; Y10S159/00; Y10S159/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US881523A
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AT38600B
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DE276664C
Cited
FR555139A
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GB313983A
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DE553815C
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FR1324801A
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US3326280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |