US2734081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:34
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/14; C07C227/18; C07C229/00; C07C229/02; C07C229/04; C07C229/06; C07C229/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE PROCESS OF PRODUCING A BETA-ALANINE WHICH COMPRISES HEATING ETHYLENE CYANOHYDRIN AT A TEMPERATURE OF AT LEAST ABOUT 70* C. IN THE PRESENCE OF A CATALYTIC AMOUNT OF AMMONIA EQUIVALENT TO THAT IN THE RANGE OF ABOUT 0.5-3.0% OF 28% AQUEOUS AMMONIA BASED ON THE WEIGHT OF SAID ETHYLENE CYANOHYDRIN, AND RECOVERING A BETAALANINE FROM THE REACTION MASS.
Claim 2
Dependent Claim
58 words
THE PROCESS OF PRODUCING A BETA-ALANINE WHICH COMPRISES HEATING ETHYLENE CYANOHYDRIN AT A TEMPERATURE OF AT LEAST ABOUT 70* C. IN THE PRESENCE OF A CATALYTIC AMOUNT OF AMMONIA EQUIVALENT TO THAT IN THE RANGE OF ABOUT 0.5-3.0% OF 28% AQUEOUS AMMONIA BASED ON THE WEIGHT OF SAID ETHYLENE CYANOHYDRIN, AND RECOVERING A BETAALANINE FROM THE REACTION MASS.
References Cited (Backward Citations)
US2364538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |