US3729455A
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Electroconductive method for controlling organometallic catalytic polymerizations
Assignee: Gulf Research and Development Co
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Filing: 1971-03-11
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Granted: 1973-04-24
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Expires: 1991-03-11
Abstract
Abstract A CONTROL METHOD COMPRISING MEASURING THE ELECTRICAL CONDUCTIVITY OF AN ORGANIC SOLVENT OLEFIN POLYMERIZATION SYSTEM CONTAINING AN ORGANOMETALLIC CATALYST AND ADJUSTING THE CONCENTRATION OF THE ORGANOMETALLIC CATALYST IN SAID POLYMERIZATION SYSTEM RESPONSIVE TO THE ELECTROCONDUCTIVITY MEASUREMENT.
Inventors
- 👤 K Harwell
- 👤 F Galiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:23
CPC Classifications
C; C08; C08F; C08F10/00; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08F36/00; C08F36/02; C08F36/04
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |