US3150129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenthiazine derivatives and processes for their preparation
Assignee: Rhone Poulenc SA
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Filing: 1962-04-05
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Granted: 1964-09-22
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Expires: 1982-04-05
Abstract
No abstract record available.
Inventors
- 👤 Jacob Robert Michel
- 👤 Robert Jacques Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:09
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/06; C07D241/00; C07D241/36; C07D241/38; C07D241/40; C07D241/44; C07D267/00; C07D267/22
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |