Patent US2992278A successfully refreshed from Google Patents.
US2992278A
Expired / Lapsed
US
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Process for production of 1, 4 saturated diols
Assignee: Airco Inc
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Filing: 1957-12-12
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Granted: 1961-07-11
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Expires: 1977-12-12
Abstract
No abstract record available.
Inventors
- 👤 Robert J Tedeschi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:08
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/17; C07C29/172; C07C29/60; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN IMPROVED PROCESS FOR PRODUCING A SATURATED 1,4-DIOL IN HIGH YIELD AND PURITY FROM ITS CORRESPONDING ACEYLENIC 1,4-DIOL COMPRISING HYDROGENATING SAID ACETYLENIC 1,4-DIOL IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, RHODIUM AND PLATINUM AND AN ALKALINE MATERIAL, SAID ALKALINE MATERIAL BEING PRESENT IN AN AMOUNT FROM ABOUT 0.010 TO 0.3 G. PER MOLE OF TERITARY ACETYLENIC 1,4-DIOL, WHEREBY SAID ACETYLENIC 184-DIOL IS CONVERTED TO ITS CORRESPONDING SATURATED 1,4-DIOL.
Claim 2
Dependent Claim
74 words
AN IMPROVED PROCESS FOR PRODUCING A SATURATED 1,4-DIOL IN HIGH YIELD AND PURITY FROM ITS CORRESPONDING ACEYLENIC 1,4-DIOL COMPRISING HYDROGENATING SAID ACETYLENIC 1,4-DIOL IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PALLADIUM, RHODIUM AND PLATINUM AND AN ALKALINE MATERIAL, SAID ALKALINE MATERIAL BEING PRESENT IN AN AMOUNT FROM ABOUT 0.010 TO 0.3 G. PER MOLE OF TERITARY ACETYLENIC 1,4-DIOL, WHEREBY SAID ACETYLENIC 184-DIOL IS CONVERTED TO ITS CORRESPONDING SATURATED 1,4-DIOL.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |