US3065220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and use of ziegler catalysts wherein the catalyst components are reacted at below-25 deg.c.
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-05-22
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Granted: 1962-11-20
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Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Robert J Mcmanimie
- 👤 Harry G Hurst
- 👤 Edward H Mottus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:22
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
METHOD WHICH COMPRISES INTERACTING BELOW -25* C. (A) AN ALUMINUM COMPOUND OF THE GENERAL FORMULA R2AIX WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND ARYL RADICALS AND X IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, AND ALKYL, CYCLOALKYL AND ARYL RADICALS, WITH (B) A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES, BROMIDES AND IODIDES OF TITANIUM AND ZIRCONIUM, TO FORM AN ACTIVE CATALYST, THE MOL RATIO OF (A) TO (B) BEING BETWEEN 0.3:1 AND 5:1
Claim 2
Dependent Claim
84 words
METHOD WHICH COMPRISES INTERACTING BELOW -25* C. (A) AN ALUMINUM COMPOUND OF THE GENERAL FORMULA R2AIX WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL AND ARYL RADICALS AND X IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, AND ALKYL, CYCLOALKYL AND ARYL RADICALS, WITH (B) A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES, BROMIDES AND IODIDES OF TITANIUM AND ZIRCONIUM, TO FORM AN ACTIVE CATALYST, THE MOL RATIO OF (A) TO (B) BEING BETWEEN 0.3:1 AND 5:1
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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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |