Patent US2914528A successfully refreshed from Google Patents.
US2914528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted phenothiazinyl trifluoro-methyl sulfones
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1958-04-16
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Granted: 1959-11-24
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Expires: 1978-04-16
Abstract
No abstract record available.
Inventors
- 👤 Paul N Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:18
CPC Classifications
A; A61; A61K; A61K31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A CHEMICAL COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND ITS NONTOXIC ACID ADDITION SALTS, THE FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
23 words
A CHEMICAL COMPOUND OF THE CLASS CONSISTING OF A FREE BASE AND ITS NONTOXIC ACID ADDITION SALTS, THE 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) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |