US2610969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
production of diaryl pyrazolines
Assignee: —
•
Filing: —
•
Granted: 1952-09-16
•
Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:38
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/06; C07D401/00; C07D401/02; C07D401/04; C07D401/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
PROCESS FOR THE PRODUCTION OF 1:3-DIARYL PYRAZOLINES WHICH COMPRISES REACTING IN A BASIC MEDIUM A 1-ARYL PYRAZOLINE WHEREIN THE 3-POSITION IS UNSUBSTITUTED, WITH A DIAZONIUM SALT OF A PRIMARY ARYLAMINE.
Claim 2
Dependent Claim
30 words
PROCESS FOR THE PRODUCTION OF 1:3-DIARYL PYRAZOLINES WHICH COMPRISES REACTING IN A BASIC MEDIUM A 1-ARYL PYRAZOLINE WHEREIN THE 3-POSITION IS UNSUBSTITUTED, WITH A DIAZONIUM SALT OF A PRIMARY ARYLAMINE.
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) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |