US2928767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized phenothiazine preparations
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1957-07-17
•
Granted: 1960-03-15
•
Expires: 1977-07-17
Abstract
No abstract record available.
Inventors
- 👤 John J Gulesich
- 👤 Joseph A Marlino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:36
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/06; A61K47/22; A61K9/00; A61K9/0012; A61K9/0019
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
AN AQUEOUS LIGHT-STABLE PHENOTHIAZINE PREPARATION COMPRISING WATER, FROM ABOUT 0.1% TO ABOUT 10% BY WEIGHT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF A FREE BASE AND ITS NONTOXIC PHARMACEUTICALLY ACCEPTABLE ORGANIC AND INORGANIC ACID ADDITION SALTS, THE FREE BASE HAVING THE FORMULA:
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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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |