US3538104A
Expired / Lapsed
US
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Pyridyl-2-imidazolones
Assignee: Novartis Corp
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Filing: 1969-02-28
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Granted: 1970-11-03
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Expires: 1989-02-28
Abstract
Abstract Substituted pyridyl-2-imidazolones and their acid addition salts which are analgesic, anti-inflammatory, and antipyretic agents. An illustrative embodiment is 1-methyl-5-(2-pyridyl)-2-imidazolone.
Inventors
- 👤 Norbert Gruenfeld
- 👤 Enos C Pesterfield Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:02
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; A61K31/44
Claims Analysis
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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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |