US3819627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-substituted-3,4-dihydro-2(1h)-quinazolinones
Assignee: Sandoz AG
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Filing: 1970-09-28
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Granted: 1974-06-25
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Expires: 1990-09-28
Abstract
Abstract 1-SUBSTITUTED-3,4-DIHYDRO-2(1H) -QUINAZOLINONES FROM THE GROUP OF 1-SUBSTITUTED-3,4-DIHYDRO-4-ARYL-2(1H)-QUINAZOLINONES AND 1,3-DISUBSTITUTED -3,4 -DIHYDRO-4-ARYL-2(1H)-QUINAZOLINOES, WHICH ARE USEFUL BECAUSE OF PHARMACOLOGICAL ACTIVITY, FOR EXAMPLE, AS ANTI-INFLAMMATORY AGENTS. ALSO DISCLOSED IS PROCESS UTILIZING THE 1-SUBBSTITUTED3,4-DIHYDRO-4-ARYL-2(1H)-QUINAZOLINONES AS INTERMEDIATES IN PREPARATION OF 1-SUBSTITUTED -ARYL-2-(1H) - QUINAZOLINONES WHICH ARE ALSO USEFUL AS ANTI-INFLAMMATORY AGENTS.
Inventors
- 👤 H Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:52
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/70; C07D239/72; C07D239/78; C07D239/80; C07D239/82; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; G; G02; G02B; G02B27/00; G02B27/02
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |