US2701252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isoindolenine compounds
Assignee: —
•
Filing: —
•
Granted: 1955-02-01
•
Expires: 1972-02-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:27
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
THE PROCESS FOR THE PRODUCTION OF CHLORINE CONTAINING ISOINDOLENINES WHICH COMPRISES TREATING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHTHALIMIDES, O-CYANOBENZOIC ACIDS AND THE ACID CHLORIDES O-CYANOBENZOIC ACIDS WITH PHOSPHORUS PENTACHLORIDE AT TEMPERATURES FROM 80 TO 180*C.
Claim 2
Dependent Claim
38 words
THE PROCESS FOR THE PRODUCTION OF CHLORINE CONTAINING ISOINDOLENINES WHICH COMPRISES TREATING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHTHALIMIDES, O-CYANOBENZOIC ACIDS AND THE ACID CHLORIDES O-CYANOBENZOIC ACIDS WITH PHOSPHORUS PENTACHLORIDE AT TEMPERATURES FROM 80 TO 180*C.
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) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |