Patent US3560502A successfully refreshed from Google Patents.
US3560502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New quinazoline compounds and methods for their production
Assignee: Parke Davis and Co LLC
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Filing: 1968-05-24
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Granted: 1971-02-02
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Expires: 1988-05-24
Abstract
Abstract 2,4-DIAMINO - 6 - (SUBSTITUTED NITROSAMINO) QUINAZOLINE COMPOUNDS AND SALTS THEREOF. THE SUBSTITUENT ON THE 6-NITROSAMINO GROUP IS A GROUP SUCH AS BENZYL, SUBSTITUTED BENZYL, NAPHTHYLMETHYL, FURYLMETHYL, THIENYLMETHYL, OR PYRIDYLMETHYL. THE COMPOUNDS CAN ALSO BE SUBSTITUTED AT THE 5-POSITION BY CHLORINE OR METHYL AND AT THE SIDECHAIN CARBON ATOM ADJACENT TO THE NITROSAMINO GROUP BY LOWER ALKYL. THE COMPOUNDS HAVE PHARMACOLOGICAL ACTIVITIES, PRIMARILY AN ANTIPARASITIC AND ANTIMALARIAL AGENTS.
Inventors
- 👤 John Davoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:08
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/70; C07D239/72; C07D239/95
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |