US3729509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(mono-and diacylvinyl)aryl alkanoic(and alkenoic)acids
Assignee: Merck and Co Inc
•
Filing: 1970-04-20
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Granted: 1973-04-24
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Expires: 1990-04-20
Abstract
Abstract ((MONO- AND DIACYLVINYL) ARYL)ALKANOIC (AND ALKENOIC) ACIDS AND THE SALTS, ESTERS AND AMIDE DERIVATIVES THEREOF, WHEREIN THE ARYL RING MAY BE SUBSTITUTED BY ONE OR TWO HALOGEN, LOWER ALKYL OR HADROCARBYLENE SUBSTITUTED BY ONE OR TWO PRODUCTS ARE DIURETIC AND SALURETIC AGENTS WHICH MAY BE PREPARED BY TREATING A FORMYLARYL ALKANOIC (OR ALKENOIC) ACID WITH A SUITABLE KETONE OR DIKETONE IN THE PRESENCE OF A BASE
Inventors
- 👤 E Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:05
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/76; C07C59/88; C07C17/00; C07C17/093; C07C17/10; C07C17/14; C07C59/74; C07C59/84
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |