US3210426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of iminobisalkylamines
Assignee: Petro Tex Chemical Corp
•
Filing: 1962-08-13
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Granted: 1965-10-05
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Levy Joseph
- 👤 Goldstein Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:38
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/48; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR THE PREPARATION OF AN IMINOBISALKYLAMINE WHICH COMPRISES TREATING AN IMINODIALKYLNITRILE IN WHICH THE ALKYLS EACH CONTAIN FROM 1 TO ABOUT 3 CARBON ATOMS WITH HYDROGEN AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 80*C. AND AT A PRESSURE IN THE RANGE OF FROM ABOUT 300 TO ABOUT 600 POUNDS PER SQUARE INCH IN THE PRESENCE OF AMMONIA, AND A HYDROGENATION CATALYST, AND RECOVERING THE AMINE.
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE PREPARATION OF AN IMINOBISALKYLAMINE WHICH COMPRISES TREATING AN IMINODIALKYLNITRILE IN WHICH THE ALKYLS EACH CONTAIN FROM 1 TO ABOUT 3 CARBON ATOMS WITH HYDROGEN AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 80*C. AND AT A PRESSURE IN THE RANGE OF FROM ABOUT 300 TO ABOUT 600 POUNDS PER SQUARE INCH IN THE PRESENCE OF AMMONIA, AND A HYDROGENATION CATALYST, AND RECOVERING THE AMINE.
References Cited (Backward Citations)
US2166151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |