Patent US3157700A successfully refreshed from Google Patents.
US3157700A
Expired / Lapsed
US
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New sulfonylureas
Assignee: CIABA Corp
•
Filing: 1961-12-19
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Granted: 1964-11-17
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
- 👤 Eichenberger Kurt
- 👤 Wilhelm Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:24
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/50; C07C311/52; C07C311/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SULFONYL-UREA OF THE FORMULA
Claim 2
Dependent Claim
13 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A SULFONYL-UREA OF THE FORMULA
References Cited (Backward Citations)
CA602092A
Cited
US3013072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |