Patent US2160256A successfully refreshed from Google Patents.
US2160256A
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US
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Distillation
Assignee: Union Oil Company of California
•
Filing: 1935-08-26
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Granted: 1939-05-30
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Expires: 1955-08-26
Abstract
No abstract record available.
Inventors
- 👤 Blair G Aldridge
- 👤 Edward G Ragatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/143; C; C10; C10G; C10G7/00; C10G7/10; Y; Y10; Y10S; Y10S208/00; Y10S208/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-05-29 | 1942-11-28 | 1943-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-29 | 1946-11-28 | 1947-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-29 | 1950-11-28 | 1951-05-30 | $7700.00 | Window Closed / Lapsed |