Patent US2863928A successfully refreshed from Google Patents.
US2863928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters over cu-zn-ai catalysts
Assignee: —
•
Filing: —
•
Granted: 1958-12-09
•
Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:53
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C29/149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A METHOD FOR PRODUCING ALIPHATIC MONOHYDRIC AND DIHYDRIC ALCOHOLS BY HYDROGENOLYSIS, AT A PRESSURE BETWEEN 100 AND 500 ATMOSPHERES GAUGE AND A TEMPERATURE BETWEEN 180*C. AND 350*C., OF A MEMBER FROM THE GROUP CONSISTING OF MONOCARBOXYLIC, ALIPHATIC ACIDS HAVING AT LEAST TWO CARBONS, DICARBOXYLIC, ALIPHATIC ACIDS HAVING 2-12 CARBONS, AND ESTERS OF THE AFORESAID ACIDS, THE IMPROVEMENT WHICH COMPRISES: EFFECTING HYDROGENOLYSIS IN THE PRESENCE OF SMALL, ALKALI-CORRODED PARTICLES OF AN ALLOY CONSISTING ESSENTIALLY OF BY WEIGHT 5-40% ZINC, 30-60% COPPER AND 30-60% ALUMINUM.
Claim 2
Dependent Claim
84 words
IN A METHOD FOR PRODUCING ALIPHATIC MONOHYDRIC AND DIHYDRIC ALCOHOLS BY HYDROGENOLYSIS, AT A PRESSURE BETWEEN 100 AND 500 ATMOSPHERES GAUGE AND A TEMPERATURE BETWEEN 180*C. AND 350*C., OF A MEMBER FROM THE GROUP CONSISTING OF MONOCARBOXYLIC, ALIPHATIC ACIDS HAVING AT LEAST TWO CARBONS, DICARBOXYLIC, ALIPHATIC ACIDS HAVING 2-12 CARBONS, AND ESTERS OF THE AFORESAID ACIDS, THE IMPROVEMENT WHICH COMPRISES: EFFECTING HYDROGENOLYSIS IN THE PRESENCE OF SMALL, ALKALI-CORRODED PARTICLES OF AN ALLOY CONSISTING ESSENTIALLY OF BY WEIGHT 5-40% ZINC, 30-60% COPPER AND 30-60% ALUMINUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |