US3115496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain 3, 4-disubstituted-1, 2, 5-thiadiazole-1, 1-dioxides and their preparation
Assignee: Pharmacia and Upjohn Co
•
Filing: 1963-05-13
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Granted: 1963-12-24
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 John B Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:58
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
3,4-DISUBSTITUTED-1,2,5-THIADIAZOLE 1,1-DIOXIDE OF THE FORMULA
Claim 2
Dependent Claim
5 words
3,4-DISUBSTITUTED-1,2,5-THIADIAZOLE 1,1-DIOXIDE OF THE FORMULA
Claim 3
Dependent Claim
12 words
THE PROCESS WHICH COMRPISES REACTING SULFAMIDE WITH AN W-DIKETONE OF THE FORMULA
Claim 4
Dependent Claim
12 words
THE PROCESS WHICH COMRPISES REACTING SULFAMIDE WITH AN W-DIKETONE 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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |