US3409666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrolysis of aminonitriles
Assignee: Standard Oil Co
•
Filing: 1966-01-24
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Granted: 1968-11-05
•
Expires: 1986-01-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Foreman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:01
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS FOR PRODUCING AN AMINOACID SALT COMPRISING PARTIALLY HYDROLYZING A MIXTURE OF WATER AND SUBSTANTIALLY EQUIVALENT AMOUNTS OF AN AMINONITRILE SELECTED FROM THE GROUP CONSISTING OF NITRILOTRIACETONITRILE, ETHYLENE DIAMINE TETRAACETONITRILE, DIETHYLENE TRIAMINE PENTAACETONITRILE, METHYLAMINE DIACETONITRILE, AND ETHYL AMINE DIACETONITRILE AND AN ALKALI METAL HYDROXIDE AT A TEMPERATURE OF FROM ABOUT 50 TO 120*C. AND THEN SPRAY DRYING THE MIXTURE AT A TEMPERATURE OF FROM 200 TO 900*F.
Claim 2
Dependent Claim
68 words
THE PROCESS FOR PRODUCING AN AMINOACID SALT COMPRISING PARTIALLY HYDROLYZING A MIXTURE OF WATER AND SUBSTANTIALLY EQUIVALENT AMOUNTS OF AN AMINONITRILE SELECTED FROM THE GROUP CONSISTING OF NITRILOTRIACETONITRILE, ETHYLENE DIAMINE TETRAACETONITRILE, DIETHYLENE TRIAMINE PENTAACETONITRILE, METHYLAMINE DIACETONITRILE, AND ETHYL AMINE DIACETONITRILE AND AN ALKALI METAL HYDROXIDE AT A TEMPERATURE OF FROM ABOUT 50 TO 120*C. AND THEN SPRAY DRYING THE MIXTURE AT A TEMPERATURE OF FROM 200 TO 900*F.
References Cited (Backward Citations)
US2855438A
Cited
US3183262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |