US2798869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyridazones and process for manufacture thereof
Assignee: CIBA PHARM PROD Inc
•
Filing: 1953-06-18
•
Granted: 1957-07-09
•
Expires: 1973-06-18
Abstract
No abstract record available.
Inventors
- 👤 Druey Jean
- 👤 Hueni Albrecht
- 👤 Ringier Beat Heinrich
- 👤 Stachelin Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:56
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/14; C07D237/22; C07D403/00; C07D403/02; C07D403/04; C07D413/00; C07D413/02; C07D413/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |