US2114832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of aliphatic mixed ethers
Assignee: Shell Development Co
•
Filing: 1937-12-09
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Granted: 1938-04-19
•
Expires: 1957-12-09
Abstract
No abstract record available.
Inventors
- 👤 Evans Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:56
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/34; C07C41/46; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/046
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) | 1941-04-18 | 1941-10-18 | 1942-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-04-18 | 1945-10-18 | 1946-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-04-18 | 1949-10-18 | 1950-04-19 | $7700.00 | Window Closed / Lapsed |