US3329685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 3-diphenylmethylpyrazole
Assignee: Merck KGaA
•
Filing: 1964-04-07
•
Granted: 1967-07-04
•
Expires: 1984-04-07
Abstract
No abstract record available.
Inventors
- 👤 Schulte Karl
- 👤 Koppe Volker
- 👤 Friebel Hans
- 👤 Sommer Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2721143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |