US3007938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(3-indazolecarbonyl)-hydrazines and their preparation
Assignee: STWB Inc
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Filing: 1959-04-17
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Granted: 1961-11-07
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Expires: 1979-04-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick K Kirchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:50
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/54; C07D231/56; C07D487/00; C07D487/12; C07D487/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
A COMPOUND HAVING THE FORMULA Y-CONHN=B WHEREIN Y IS 3-INDAZOLE AND N=B IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-06 | 1965-05-08 | 1965-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-06 | 1969-05-08 | 1969-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-06 | 1973-05-08 | 1973-11-07 | $7700.00 | Window Closed / Lapsed |