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US3470188A
Expired / Lapsed
US
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9-cycloalkyl-lower alkyl-piperidylidene derivatives of xanthenes and thioxanthenes
Assignee: GlaxoSmithKline LLC
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Filing: 1967-01-05
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Granted: 1969-09-30
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Expires: 1987-01-05
Abstract
No abstract record available.
Inventors
- 👤 Carl Kaiser
- 👤 Charles L Zirkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:49
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/04; C07D409/00; C07D409/02; C07D409/04
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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |