US3335197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparation of vinyl aromatics
Assignee: Standard Oil Co
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Filing: 1963-08-16
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Granted: 1967-08-08
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Arnold N Wennerberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:54
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C07C5/333; C07C5/3332
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD OF PREPARING A VINYL SUBSTITUTED AROMATIC HYDROCARBON COMPRISING CONTACTING AN AROMATIC HYDROCARBON HAVING AT LEAST ONE ALKYL HYDROCARBON SUBSTITUENT OF ONLY TWO TO THREE CARBON ATOMS IN ITS HYDROCARBON CHAIN IN A CATALYTIC CONVERSION ZONE AT A TEMPERATURE ABOVE 400*C. WITH A CATALYST CONSISTING OF A COMBINATION OF THREE DIFFERENT METAL OXIDE COMPONENTS OF WHICH ONE IS ALUMINA AND THE OTHER TWO ARE ONE EACH OF AN ALKALINE EARTH METAL OXIDE AND OF AN OXIDE OF A LOW MELTING METAL SELECTION FROM THE CLASS CONSISTING OF ZINC AND CADMIUM IN THE COMPONENT WEIGHT RATIO OF FOR EACH 10 PARTS ALUMINA, 0.5 TO 8 PARTS EACH OF THE ALKALINE EARTH METAL OXIDE AND THE OXIDE OF SAID LOW MELTING METAL.
Claim 2
Independent Claim
121 words
A METHOD OF PREPARING A VINYL SUBSTITUTED AROMATIC HYDROCARBON COMPRISING CONTACTING AN AROMATIC HYDROCARBON HAVING AT LEAST ONE ALKYL HYDROCARBON SUBSTITUENT OF ONLY TWO TO THREE CARBON ATOMS IN ITS HYDROCARBON CHAIN IN A CATALYTIC CONVERSION ZONE AT A TEMPERATURE ABOVE 400*C. WITH A CATALYST CONSISTING OF A COMBINATION OF THREE DIFFERENT METAL OXIDE COMPONENTS OF WHICH ONE IS ALUMINA AND THE OTHER TWO ARE ONE EACH OF AN ALKALINE EARTH METAL OXIDE AND OF AN OXIDE OF A LOW MELTING METAL SELECTION FROM THE CLASS CONSISTING OF ZINC AND CADMIUM IN THE COMPONENT WEIGHT RATIO OF FOR EACH 10 PARTS ALUMINA, 0.5 TO 8 PARTS EACH OF THE ALKALINE EARTH METAL OXIDE AND THE OXIDE OF SAID LOW MELTING METAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |