US2404103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of cis-alpha-beta unsaturated acid esters
Assignee: Wingfoot Corp
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Filing: 1943-08-09
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Granted: 1946-07-16
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Expires: 1963-08-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:27
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0218; B01J31/022; B01J31/0217; C; C07; C07C; C07C67/00; C07C67/30; C07C67/333; B01J2231/00; B01J2231/50; B01J2231/52
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) | 1949-07-15 | 1950-01-14 | 1950-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-15 | 1954-01-14 | 1954-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-15 | 1958-01-14 | 1958-07-16 | $7700.00 | Window Closed / Lapsed |