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US3399192A
Expired / Lapsed
US
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1-oxa-2-oxo 3, 8-diaza spiro (4, 5) decanes
Assignee: Science Union et Cie
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Filing: 1965-04-14
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Granted: 1968-08-27
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Expires: 1985-04-14
Abstract
No abstract record available.
Inventors
- 👤 Regnier Gilbert
- 👤 Canevari Roger
- 👤 Douarec Jean-Claude Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:43
CPC Classifications
C; C07; C07D; C07D498/00; C07D498/02; C07D498/10
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |