US3577446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphatidylalkanolamine derivatives
Assignee: Wyeth LLC
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Filing: 1968-09-09
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Granted: 1971-05-04
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Expires: 1988-09-09
Abstract
Abstract THERE ARE DISCLOSED HEREIN PHOSPHATIDYLALKANOLAMINES IN WHICH THE ALKANOLAMINE IS 2-HYDROXYETHYL-, 2- OR 3-HYDROXYPROPYL-, OR 3-HYDROXYBUTYLAMINE AND THE ACYL GROUPS CONTAIN FROM 18-20 CARBON ATOMS AND THREE OR MORE DOUBLE BONDS. THE COMPOUNDS HAVE ANTI-HYPERTENSIVE PROPERTIES, AND METHODS FOR THEIR PREPARATION AND USE ARE ALSO DISCLOSED.
Inventors
- 👤 Sumanas Rakhit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/655; C07F9/65515; C07F9/06; C07F9/08; C07F9/09; C07F9/10
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |