US3595844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vanadium organometallic compounds and polymerization catalysts thereof
Assignee: Dart Industries Inc
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Filing: 1969-07-31
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Granted: 1971-07-27
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Expires: 1989-07-31
Abstract
Abstract THE REACTION PRODUCT OF A SULFUR-CONTAINING VANADIUM SALT SUCH AS VANADYL SULFATE AND AN ORGANOPHOSPHATE, SUCH AS TRIETHYL PHOSPHATE, RESULTS IN A HYDROCARBON SOLUBLE CATALYST COMPONENT. THIS COMPONENT FORMS AN ACTIVE VANADIUM COORDINATION CATALYST WHEN COMBINED WITH AN ORGANOALUMINUM HALIDE. THE RESULTING VANADIUM COORDINATION CATALYST IS ESPECIALLY USEFUL IN TH EPRODUCTION OF "EP" AND "EPDM" RUBBER.
Inventors
- 👤 James R Huerta
- 👤 Jeffrey G Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:01
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |