Patent US3558641A successfully refreshed from Google Patents.
US3558641A
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US
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Certain pyridyl salicylic acid derivatives
Assignee: Merck and Co Inc
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Filing: 1967-10-06
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Granted: 1971-01-26
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Expires: 1987-10-06
Abstract
Abstract NEW SALICYCLIC ACID COMPOUNDS, PARTICULARLY 5-(HETEROCYCLIC)-SALICYCLIC ACID DERIVATIVES AND PROCESS FOR THEIR PREPARATION ARE CLAIMED. THE NEW 5-(HETEROCYCLIC)SALICYCLIC ACID COMPOUNDS DESCRIBED HAVE ANIT-INFLAMMATORY, ANTI-PYRETIC AND ANALGESIC ACTIVITY.
Inventors
- 👤 Lewis H Sarett
- 👤 William V Ruyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:40
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/54; C07D213/55; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C07D277/30; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/24
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |