US2744925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatic nitriles
Assignee: California Research LLC
•
Filing: 1952-03-22
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Granted: 1956-05-08
•
Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr William G Toland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:04
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS WHICH COMPRISES INTIMATELY CONTACTING A MIXTURE OF POLYALKYL BENZENE HYDROCARBON CONTAINING 1 TO 3 CARBON ATOMS IN EACH ALKYL GROUP AND AN ALKYL CYANOBENZENE CONTAINING 1 TO 3 CARBON ATOMS IN THE ALKYL GROUP IN LIQUID PHASE WITH AIR AT A TEMPERATURE IN THE RANGE 200* F. TO 300* F. IN AN OXIDATION ZONE TO PRODUCE A MIXTURE OF AN ALKYL BENZOIC ACID AND A CYANOBENZOIC ACID.
Claim 2
Dependent Claim
69 words
A PROCESS WHICH COMPRISES INTIMATELY CONTACTING A MIXTURE OF POLYALKYL BENZENE HYDROCARBON CONTAINING 1 TO 3 CARBON ATOMS IN EACH ALKYL GROUP AND AN ALKYL CYANOBENZENE CONTAINING 1 TO 3 CARBON ATOMS IN THE ALKYL GROUP IN LIQUID PHASE WITH AIR AT A TEMPERATURE IN THE RANGE 200* F. TO 300* F. IN AN OXIDATION ZONE TO PRODUCE A MIXTURE OF AN ALKYL BENZOIC ACID AND A CYANOBENZOIC ACID.
References Cited (Backward Citations)
US1815985A
Cited
US2054088A
Cited
US2245528A
Cited
US2499055A
Cited
US2552278A
Cited
US2552267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |