Patent US3471481A successfully refreshed from Google Patents.
US3471481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzothiazines
Assignee: ER Squibb and Sons LLC
•
Filing: 1966-03-28
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Granted: 1969-10-07
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 John Krapcho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:16
CPC Classifications
C; C07; C07D; C07D279/00; C07D279/10; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/54
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
27 words
A DEHYDRATED PRODUCT OF A COMPOUND IN ACCORDANCE WITH THE FORMULA OF CLAIM 1 HAVING THE NAME 4-(3-(4METHYL - 1 - PIPERAZINZYL)PROPYL) - 2 - STYRYL-2H-1,4BENZOTHIAZIN-3(4H)-ONE, DIHYDROCHLORIDE.
References Cited (Backward Citations)
US2894946A
Cited
FR1284735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |