Patent US3216988A successfully refreshed from Google Patents.
US3216988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-component metal hydride-transition metal halide-antimony compound catalyst for polymerizing olefins
Assignee: Eastman Kodak Co
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Filing: 1962-09-26
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Granted: 1965-11-09
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Expires: 1982-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Jr Newton H Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:04
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A POLYMERIZATION OF A-OLEFINIC HYDROCARBON CONTAINING 2 TO 10 CARBON ATOMS TO FORM SOLID, CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE OF AN INORGANIC HYDRIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, A HALIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM, THE HALOGEN ATOMS BEING SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE AND AN ANTIMONY COMPOUND HAVING THE FORMULA R3SB WHEREIN EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND HYDROCARBON RADICALS CONTAINING 1 TO 12 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND ARALKYL.
Claim 2
Dependent Claim
118 words
IN A POLYMERIZATION OF A-OLEFINIC HYDROCARBON CONTAINING 2 TO 10 CARBON ATOMS TO FORM SOLID, CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE OF AN INORGANIC HYDRIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, A HALIDE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM, THE HALOGEN ATOMS BEING SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE AND AN ANTIMONY COMPOUND HAVING THE FORMULA R3SB WHEREIN EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND HYDROCARBON RADICALS CONTAINING 1 TO 12 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND ARALKYL.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |