US3250769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4:6-dialkyl-pyrazolo [3:4-b] pyridines
Assignee: BASF Corp
•
Filing: 1962-08-22
•
Granted: 1966-05-10
•
Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Paul
- 👤 Eichenberger Kurt
- 👤 Rossi Alberto
- 👤 Wilhelm Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:09
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/38; C07D401/00; C07D401/02; C07D401/04; C07D401/14; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUDNS OF THE FORMULA
Claim 2
Dependent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUDNS OF THE FORMULA
References Cited (Backward Citations)
US2708197A
Cited
US2786845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |