US2950326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of 1, 4-butynediol to 1, 4-butanediol
Assignee: GAF Chemicals Corp
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Filing: 1957-12-31
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Granted: 1960-08-23
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Eugene V Hort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:43
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/17; C07C29/172
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR THE CATALYTIC HYDROGENATION OF 1,4BUTYNEDIOL TO 1,4- BUTANEDIOL COMPRISING ADMIXING AN AQUEOUS SOLUTION OF 1,4-BUTYNEDIOL WITH A NICKEL CATALYST AND TREATING THE RESULTING MIXTURE AT AN ALKALINE PH WITH HYDROGEN AT A TEMPERATURE OF ABOUT 15 TO 120*C. AND A PRESSURE OF ABOUT 0 TO 30 ATMOSPHERES GAUGE UNTIL THE 1,4- BUTYNEDIOL HAS BEEN HYDROGENATED TO 1,4 BUTANEDIOL,
Claim 2
Dependent Claim
61 words
A PROCESS FOR THE CATALYTIC HYDROGENATION OF 1,4BUTYNEDIOL TO 1,4- BUTANEDIOL COMPRISING ADMIXING AN AQUEOUS SOLUTION OF 1,4-BUTYNEDIOL WITH A NICKEL CATALYST AND TREATING THE RESULTING MIXTURE AT AN ALKALINE PH WITH HYDROGEN AT A TEMPERATURE OF ABOUT 15 TO 120*C. AND A PRESSURE OF ABOUT 0 TO 30 ATMOSPHERES GAUGE UNTIL THE 1,4- BUTYNEDIOL HAS BEEN HYDROGENATED TO 1,4 BUTANEDIOL,
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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |