Patent US2902484A successfully refreshed from Google Patents.
US2902484A
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Phenthiazine derivatives and processes for their preparation
Assignee: Rhone Poulenc SA
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Filing: 1955-02-02
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Granted: 1959-09-01
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Expires: 1975-02-02
Abstract
No abstract record available.
Inventors
- 👤 Horclois Raymond Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:17
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
THERAPEUTIC PHENTHIAZINE COMPOUNDS HAVING THE FUNDAMENTAL STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2534237A
Cited
US2590125A
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US2627517A
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US2645640A
Cited
GB632277A
Cited
US2676971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |