US2785160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of phenthiazine
Assignee: Rhone Poulenc SA
•
Filing: 1952-05-29
•
Granted: 1957-03-12
•
Expires: 1972-05-29
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 22:07
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PHENTHIAZINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS CONTAINING THE STRUCTURE:
Claim 2
Dependent Claim
13 words
A PHENTHIAZINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS CONTAINING THE STRUCTURE:
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) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |