US2424691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymerization of thiophene with vinyl esters of organic fatty acids
Assignee: ExxonMobil Oil Corp
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Filing: 1944-07-08
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Granted: 1947-07-29
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Expires: 1964-07-08
Abstract
No abstract record available.
Inventors
- 👤 Rowland C Hansford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:48
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2020714A
Cited
US2310780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |