Patent US2076617A successfully refreshed from Google Patents.
US3720768A
Expired / Lapsed
US
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Aspergillic acid as an antihypertensive agent
Assignee: Abbott Laboratories
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Filing: 1971-11-22
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Granted: 1973-03-13
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Expires: 1991-11-22
Abstract
Abstract METHOD OF TREATING HYPERTENSION BY ADMINISTERING TO A HYPERTENSIVE PATIENT A THERAPWUTICALLY EFFECTIVE AMOUNT OF A COMPOUND OF THE FORMULA O=N<(=C(-OH)-(R3-)C=X(-R4)-(R1-)C=C(-R2)-) OR HO-N<(-C(=O)-(R3-)C=X(-R4)-(R1-)C=C(-R2)-) WHEREIN X IIS C OR N; AND R1, R2, R3 AND R4 EACH ARE HYDROGEN, ALKYL, CYCLOALKYL OR ARYL, WITH THE LIMITATION THAT R4 IS PRESENT ONLY WHEN X IS C.
Inventors
- 👤 P Jones
- 👤 Y Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; A61K31/44; A61K31/445; C07D241/00; C07D241/02; C07D241/10; C07D241/14; C07D241/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |