Patent US2336493A successfully refreshed from Google Patents.
US2336493A
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US
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Distillation of organic liquids polymerizable by heat
Assignee: EIDP Inc
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Filing: 1940-07-23
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Granted: 1943-12-14
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Expires: 1960-07-23
Abstract
No abstract record available.
Inventors
- 👤 Barnard M Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:35
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/38; Y; Y10; Y10S; Y10S159/00; Y10S159/29; Y10S203/00; Y10S203/11; Y10S203/13
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) | 1946-12-13 | 1947-06-14 | 1947-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-13 | 1951-06-14 | 1951-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-13 | 1955-06-14 | 1955-12-14 | $7700.00 | Window Closed / Lapsed |