US3174832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsating fractional crystallizer
Assignee: Sunoco Inc
•
Filing: 1961-02-21
•
Granted: 1965-03-23
•
Expires: 1981-02-21
Abstract
No abstract record available.
Inventors
- 👤 Byron B Bohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:36
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2731456A
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US1951923A
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US2617273A
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US2603667A
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US2615794A
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US2822249A
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US2895835A
Cited
US2891099A
Cited
US2890962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |