US2712012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-sulfanilamido-6-substituted pyridazines and method of preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1954-11-10
•
Granted: 1955-06-28
•
Expires: 1974-11-10
Abstract
No abstract record available.
Inventors
- 👤 Joe H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
COMPOUNDS OF THE GROUP HAVING THE FORMULA:
Claim 2
Dependent Claim
7 words
COMPOUNDS OF THE GROUP HAVING THE FORMULA:
References Cited (Backward Citations)
US2371115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |