US3564057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkanolamines
Assignee: Commercial Solvents Corp
•
Filing: 1968-10-07
•
Granted: 1971-02-16
•
Expires: 1988-10-07
Abstract
Abstract AN IMPROVED PROCESS FOR THE PRODUCTION OF PRIMARY ALKANOLAMINES BY THE REDUCTION OF NITROALKANOLS WHEREBY THE CONTENT OF N-ALKYLATED ALKANOLAMINES IS SUBSTANTIALLY REDUCED, BY EFFECTING THE REDUCTION STEP IN THE PRESENCE OF AMMONIA OR A SOLUBLE PRIMARY OR SECONDARY ALIPHATIC AMINE.
Inventors
- 👤 John B Tindall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:58
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/13; C07C205/14; C07C205/15; C07C209/00; C07C209/04; C07C209/14; C07C209/16; C07C211/00; C07C211/01; C07C211/02; C07C211/03; C07C213/00; C07C213/02; C07C213/04; C07C213/08; C07C213/10; C07C215/00; C07C215/02; C07C215/04; C07C215/06; C07C215/08; C07C217/00; C07C217/02; C07C217/04; C07C217/06; C07C217/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |