Patent US3438838A successfully refreshed from Google Patents.
Patent US3732300A successfully refreshed from Google Patents.
US3732300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenylaminoethanol derivatives
Assignee: Allen and Hanburys Ltd
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Filing: 1971-05-11
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Granted: 1973-05-08
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Expires: 1991-05-11
Abstract
Abstract ARE DISCLOSED. SOME HAVE STIMULANT ACTION AND SOME HAVE BLOCKING ACTION ON B-ADRENERGIC RECEPTORS. 5-(2-TERT.BUTYLAMINO-HYDROXYETHYL)-SALICYLAMIDE IN PARTICULAR EXERTS A MARKED BLOCKING EFFECT WHILE BEING REMARKABLY NON-TOXIC AND FREE FROM CENTRAL NERVOUS DEPRESSANT ACTIVITY. 2-X,(R2-N(-R3)-CH(-R1)-CH(-OH)-)PHENOL NOVEL 1-PHENYL-2-AMINO ETHANOL DERIVATIVES OF THE FORMULA:
Inventors
- 👤 L Lunts
- 👤 P Toon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:32
CPC Classifications
C; C07; C07C; C07C243/00; C07C243/24; C07C243/38; C07C229/00; C07C229/38
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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |