Patent US4376768A successfully refreshed from Google Patents.
US4376768A
Expired / Lapsed
US
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Benzothiazine derivative
Assignee: Mitsui Toatsu Chemicals Inc
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Filing: 1981-06-16
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Granted: 1983-03-15
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Expires: 2001-06-16
Abstract
Abstract N-(6-chloro-2-pyridyl)-3,4-dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine -3-carboxamide 1,1-dioxide that is a novel benzothiazine derivative. The compound is characterized by a low degree of toxicity and a low incidence of gastric disorders and useful as an anti-inflammatory agent.
Inventors
- 👤 Shoichiro Ozaki
- 👤 Hideya Kobayashi
- 👤 Haruki Mori
- 👤 Takafumi Kitano
- 👤 Hiroshi Kawazura
- 👤 Yutaka Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:30
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/73; A; A61; A61P; A61P29/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
N-(6-chloro-2-pyridyl)-3,4-dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide.
Claim 2
Dependent Claim
2 words
N-(6-chloro-2-pyridyl)-3,4-dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide.
Claim 3
Dependent Claim
10 words
An anti-inflammatory composition comprising N-(6-chloro-2-pyridyl)-3,4-dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide and a pharmaceutical carrier.
Claim 4
Dependent Claim
10 words
An anti-inflammatory composition comprising N-(6-chloro-2-pyridyl)-3,4-dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide and a pharmaceutical carrier.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |