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US3408347A
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US
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Pyrido-[1, 2-b] [1, 2]benzothiazin-10, 11-(7h, 10alphah)-dione 5, 5-dioxides and 7, 8-dihydropyrido-[1, 2-b] [1, 2]benzothiazin-10, 11-(9h, 10alphah)-dione 5, 5-dioxidesand process for their production
Assignee: Warner Lambert Co LLC
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Filing: 1966-04-20
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Granted: 1968-10-29
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Expires: 1986-04-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John Shavel
- 👤 Zinnes Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:02
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3198793A
Cited
US3284450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |