US3634540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the isomerization of olefins
Assignee: Goodyear Tire and Rubber Co
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Filing: 1969-10-13
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Granted: 1972-01-11
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Expires: 1989-10-13
Abstract
Abstract THERE IS DISCLOSED A PROCESS COMPRISING ISOMERIZING BRANCHED AND STRAIGHT CHAIN OLEFINS TO FORM ISOMERS HAVING THEIR CARBON-TO-CARBON DOUBLE BOND IN A MORE INTERNALLY LOCATED POSITION BY SUBJECTING SUCH OLEFINS TO ISOMERIZATION CONDITIONS TO A TUNGSTEN COMPLEX COMPOUND CORRESPONDING TO THE FORMULA L.W(CO)A-B WHEREIN L IS AN UNSATURATED HYDROGEN COMPOUND HAVING AT LEAST TWO CARBON-TO-CARBON DOUBLE BONDS AND WHERE "A" IS A WHOLE NUMBER REPRESENTING THE VALENCE OF THE TUNGSTEN METAL AND "B" IS A WHOLE NUMBER CORRESPONDING TO THE WHOLE NUMBER OF CARBON-TO-CARBON BONDS IN L CAPABLE OF FORMING COORDINATED BONDS WITH THE TUNGSTEN METAL.
Inventors
- 👤 Jin-Liang Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562; C07C5/2581; C07C5/2587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |