US2923713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isonicotinic acid, benzyl and p-methoxybenzyl hydrazides
Assignee: F Hoffmann La Roche AG
•
Filing: 1958-02-05
•
Granted: 1960-02-02
•
Expires: 1978-02-05
Abstract
No abstract record available.
Inventors
- 👤 Fox Herman Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:30
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
1-ISONICOTINYL-2-BENZYLHYDRAZINE. 2. 1-ISONICOTINYL-2-(P-METHOXYBENZYL) HYDRAZINE.
Claim 2
Dependent Claim
4 words
1-ISONICOTINYL-2-BENZYLHYDRAZINE. 2. 1-ISONICOTINYL-2-(P-METHOXYBENZYL) HYDRAZINE.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |