US3023090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for crystallization
Assignee: Phillips Petroleum Co
•
Filing: 1955-02-28
•
Granted: 1962-02-27
•
Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel J Kolner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:25
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004; C; C07; C07C; C07C7/00; C07C7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US451546A
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US482694A
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US2035441A
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GB363774A
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US2361874A
Cited
US2617274A
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US2683178A
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US2686864A
Cited
US2765921A
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US2709215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |