US2534018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polyfunctional compounds
Assignee: EIDP Inc
•
Filing: 1949-08-11
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Granted: 1950-12-12
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Expires: 1969-08-11
Abstract
No abstract record available.
Inventors
- 👤 William F Gresham
- 👤 Carl E Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:18
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; B; B01; B01J; B01J27/00; B01J27/06; C07C29/1512; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR THE PREPARATION OF POLYHYDRIC ALCOHOLS AND FORMATE ESTERS THEREOF WHICH COMPRISES REACTING AN OXIDE OF CARBON WITH HYDROGEN IN THE PRESENCE OF A COBALTOUS FLUORIDE CATALYST IN AN AQUEOUS OR ALCOHOLIC MEDIUM AT A TEMPERATURE OF 150 DEGREES TO 400 DEGREES C. AND A PRESSURE ABOVE 1500 ATMOSPHERES AND SEPARATING POLYHYDRIC ALCOHOL AND FORMATE ESTER THEREOF FROM THE RESULTING PRODUCT.
Claim 2
Dependent Claim
63 words
A PROCESS FOR THE PREPARATION OF POLYHYDRIC ALCOHOLS AND FORMATE ESTERS THEREOF WHICH COMPRISES REACTING AN OXIDE OF CARBON WITH HYDROGEN IN THE PRESENCE OF A COBALTOUS FLUORIDE CATALYST IN AN AQUEOUS OR ALCOHOLIC MEDIUM AT A TEMPERATURE OF 150 DEGREES TO 400 DEGREES C. AND A PRESSURE ABOVE 1500 ATMOSPHERES AND SEPARATING POLYHYDRIC ALCOHOL AND FORMATE ESTER THEREOF FROM THE RESULTING PRODUCT.
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |