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US3438995A
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US
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Diazaheterocyclic substituted benz-oxaheterocyclic compounds
Assignee: SAHYUN LAB
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Filing: 1968-01-08
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Granted: 1969-04-15
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Expires: 1988-01-08
Abstract
No abstract record available.
Inventors
- 👤 John Andrew Faust
- 👤 Melville Sahyun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:03
CPC Classifications
C; C07; C07C; C07C17/00; C07C45/00; C07C45/56; C07C45/57; C07C45/59; C07C45/60; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/36; C08K5/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |