US3868367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-Hydroxy-3-(5-isoxazolylcarbamoyl)-2H-1,2-benzothiazine 1,1-dioxides
Assignee: Warner Lambert Co LLC
•
Filing: 1974-04-11
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Granted: 1975-02-25
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Expires: 1994-04-11
Abstract
Abstract WHEREIN R1, R2 and R3 are hydrogen or alkyl. These compounds are useful as antiinflammatory agents. Compounds of the formula:
Inventors
- 👤 Harold Zinnes
- 👤 Martin L Schwartz
- 👤 Neil A Lindo
- 👤 Jr John Shavel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:08
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
11 words
A compound according to claim 1 which is 4-hydroxy-2-methyl-N-(3-methyl-5-isoxazolyl)-2H-1,2-benzothiazine-3 -carboxamide 1,1-Dioxide.
Claim 4
Dependent Claim
11 words
A compound according to claim 1 which is N-(3,4-dimethyl-5-isoxazolyl)-4-hydroxy-2-methyl-2H-1,2-benzothiazine-3 -carboxamide 1,1-Dioxide.
References Cited (Backward Citations)
US3822258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |