US2923714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-picolinoyl-2-benzyl hydrazine and salts
Assignee: F Hoffmann La Roche AG
•
Filing: 1958-02-13
•
Granted: 1960-02-02
•
Expires: 1978-02-13
Abstract
No abstract record available.
Inventors
- 👤 Gardner Thomas Samuel
- 👤 Lee John
- 👤 Wenis Edward
- 👤 Wenner Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:10
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
15 words
A MEMBER OF THE GROUP CONSISTING OF 1-PICOLINOYL-2BENZYLHYDRAZINE AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
15 words
A MEMBER OF THE GROUP CONSISTING OF 1-PICOLINOYL-2BENZYLHYDRAZINE AND PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF.
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 |