Patent US2898342A successfully refreshed from Google Patents.
US2898342A
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US
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2(2'-propenylidene-amino)-1,3,4-thiadiazole-5-sulfonamide
Assignee: National Drug Co
•
Filing: 1958-05-07
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Granted: 1959-08-04
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Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 Avakian Souren
- 👤 Gustav J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07D285/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
FIG-01 2-(2''PROPENYLIDENEAMINO)-1,3,4-THIADIAZOLE - 5 - SULFONAMIDE.
Claim 2
Dependent Claim
6 words
FIG-01 2-(2''PROPENYLIDENEAMINO)-1,3,4-THIADIAZOLE - 5 - SULFONAMIDE.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |