Patent US3075976A successfully refreshed from Google Patents.
US3075976A
Expired / Lapsed
US
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Phenthiazine derivatives
Assignee: Rhone Poulenc SA
•
Filing: 1958-10-17
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Granted: 1963-01-29
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Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jacob Robert Michel
- 👤 Robert Jacques Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:09
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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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |