Patent US3657264A successfully refreshed from Google Patents.
US3657264A
Expired / Lapsed
US
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Heterocyclically substituted thiadiazoles
Assignee: Bayer AG
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Filing: 1970-03-02
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Granted: 1972-04-18
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Expires: 1990-03-02
Abstract
Abstract HETEROCYCLICALLY SUBSTITUTED THIADIAZOLES, WHICH POSSESS HERBICIDAL PROPERTIES, AND WHICH MAY BE PRODUCED BY CONVENTIONAL METHODS.
Inventors
- 👤 Dietrich Rucker
- 👤 Carl Metzger
- 👤 Ludwig Eue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:50
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/04
Claims Analysis
Total Claims: 0
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |