US2985653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New piperazinyl-alkyl-phenthiazines and their preparation
Assignee: Rhone Poulenc SA
•
Filing: 1959-06-03
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Granted: 1961-05-23
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Expires: 1979-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jacob Robert Michel
- 👤 Robert Jacques Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:14
CPC Classifications
C; C07; C07D; C07D279/00; C07D279/10; C07D279/14; C07D279/18; C07D279/22; C07D279/24; A; A61; A61K; A61K31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER OF THE CLASS CONSISTING OF PHENTHIAZINE DERIVATIVES OF THE FORMULA:
Claim 2
Dependent Claim
12 words
A MEMBER OF THE CLASS CONSISTING OF PHENTHIAZINE DERIVATIVES OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |