Patent US2794055A successfully refreshed from Google Patents.
US2794055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrogenation of styrene
Assignee: —
•
Filing: —
•
Granted: 1957-05-28
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:41
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/18; C07C31/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A METHOD OF PREPARING PHENYLETHYLENE GLYCOL WHICH COMPRISES HYDROGENATING STYRENE PEROXIDE TO PHENYLETHYLENE GLGCOL AT A TEMPERATURE OF FROM 0*C. TO 100*C. IN THE PRESENCE OF A HYDROGENATION CATALYST AND AN AMINE HAVING THE FORMULA
Claim 2
Independent Claim
35 words
A METHOD OF PREPARING PHENYLETHYLENE GLYCOL WHICH COMPRISES HYDROGENATING STYRENE PEROXIDE TO PHENYLETHYLENE GLGCOL AT A TEMPERATURE OF FROM 0*C. TO 100*C. IN THE PRESENCE OF A HYDROGENATION CATALYST AND AN AMINE HAVING THE FORMULA
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |