Patent US3317523A successfully refreshed from Google Patents.
US3317523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-substituted-1, 2, 3-benzoxathiazine 2, 2 dioxides
Assignee: Pharmacia and Upjohn Co
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Filing: 1965-03-29
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Granted: 1967-05-02
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 John B Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:06
CPC Classifications
C; C07; C07D; C07D291/00; C07D291/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
4-SUBSTITUTED-1,2,3-BENZOXATHIAZINE 2,2-DIOXIDE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
4-SUBSTITUTED-1,2,3-BENZOXATHIAZINE 2,2-DIOXIDE OF 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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |