US2963480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-pteridinehydrazine and amidrazone derivatives
Assignee: Individual
•
Filing: 1959-12-29
•
Granted: 1960-12-06
•
Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Edward C Taylor
- 👤 Weinstock Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
C; C07; C07D; C07D475/00; C07D475/06; C07D475/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A CHEMICAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF A FREE BASE AND ITS NONTOXIC PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA:
Claim 2
Dependent Claim
26 words
A CHEMICAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF A FREE BASE AND ITS NONTOXIC PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS, SAID FREE BASE HAVING THE FORMULA:
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |