US2944054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted phenothiazinylalkyl aminosulfonylpiperazines
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1958-09-30
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Granted: 1960-07-05
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Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 Gordon Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:00
CPC Classifications
C; C07; C07D; C07D279/00; C07D279/10; C07D279/14; C07D279/18; C07D279/22; C07D279/24; C07D279/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A CHEMICAL COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND ITS NONTOXIC PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
25 words
A CHEMICAL COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND ITS NONTOXIC PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS, SAID FREE BASE HAVING 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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |