Patent US2305083A successfully refreshed from Google Patents.
US2305083A
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US
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Amino alcohol esters
Assignee: Wyeth Holdings LLC
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Filing: 1940-03-22
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Granted: 1942-12-15
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Expires: 1960-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr David Walker Jayne
- 👤 Day Harold Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:25
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/29
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) | 1945-12-14 | 1946-06-15 | 1946-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-14 | 1950-06-15 | 1950-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-14 | 1954-06-15 | 1954-12-15 | $7700.00 | Window Closed / Lapsed |