US3732311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of n-alkylated amines
Assignee: Fine Organics Inc
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Filing: 1970-02-24
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Granted: 1973-05-08
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Expires: 1990-02-24
Abstract
Abstract THE INVENTION ENABLES PRODUCTION OF N-ALKYLATED AMINES WITHOUT THE USE OF HIGH PRESSURES, AND WITH HIGH RECOVERY, BY CONTINUOUS SINGLE-STEP REACTION OF AN ALCOHOL WITH EITHER AMMONIA OR A PRIMARY OR SECONDARY AMINE, IN VAPOR PHASE, THROUGH THE DISCOVERY THAT THORIUM SULFATE, USED AS A CATALYST FOR THE FIRST TIME IN SAID REACTION, ENABLES DISCARD OF HIGH PRESSURES, REACTION AT ATMOSPHERIC PRESSURE OR THEREABOUT, AND THE USE OF SIMPLE EQUIPMENT AND LOW LABOR COST.
Inventors
- 👤 S Baron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:09
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16
Claims Analysis
Total Claims: 0
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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) | 1976-05-07 | 1976-11-06 | 1977-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-07 | 1980-11-06 | 1981-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-07 | 1984-11-06 | 1985-05-08 | $7700.00 | Window Closed / Lapsed |