Patent US4517155A successfully refreshed from Google Patents.
Patent US3128252A successfully refreshed from Google Patents.
US3128252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of partially reduced transition metal halide catalyst compositions
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-04-16
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Granted: 1964-04-07
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Expires: 1976-04-16
Abstract
No abstract record available.
Inventors
- 👤 Tornqvist Erik
- 👤 Charles W Seelbach
- 👤 Jr Arthur W Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:31
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
THE METHOD OF PREPARING A SOLID CATALYST COMPRISING THE STEPS OF REDUCING A HALIDE OF A TRANSITION METAL OF GROUPS IV, V, VI, AND VIII OF THE PERIODIC TABLE WITH A REDCUCING AGENT SELECTED FROM THE GROUP CONSISTING OF (1) A METAL OF GROUPS II-III, (2) A MIXTURE OF AT LEAST TWO METALS OF GROUPS II-III, (3) A MIXTURE OF THE TRANSITION METAL CORRESPONDING TO THE TRANSITION METAL IN THE TRANSITION METAL HALIDE AND A HALIDE OF A METAL OF GROUPS II-III, (4) A MIXTURE OF THE TRANSITION METAL CORRESPONDING TO THE TRANSITION METAL IN THE TRANSITION METAL HALIDE AND A METAL OF GROUPS II-III, AND (5) A MIXTURE OF A METAL OF GROUPS II-III AND A HALIDE OF A METAL OF GROUPS II-III TO FORM A SOLID CATALYST COMPONENT, SAID SOLID CATALYST COMPONENT COMPRISING A REDUCED HALIDE OF SAID TRANSITION METAL INTIMATELY ASSOCIATED WITH A HALIDE OF A METAL OF GROUPS II-III; AND ADDING TO THE RESULTING PRODUCTS A METAL ALKYL COMPOUND OF AN ELEMENT OF GROUPS II AND III OF THE PERIODIC TABLE IN AN AMOUNT SUFFICIENT TO GIVE A MOLAR RATIO OF THE METAL ALKYL COMPOUND TO THE REDUCED COMPOUND OF THE TRANSITION METAL OF FROM 0.1 TO 20.
Claim 2
Independent Claim
202 words
THE METHOD OF PREPARING A SOLID CATALYST COMPRISING THE STEPS OF REDUCING A HALIDE OF A TRANSITION METAL OF GROUPS IV, V, VI, AND VIII OF THE PERIODIC TABLE WITH A REDCUCING AGENT SELECTED FROM THE GROUP CONSISTING OF (1) A METAL OF GROUPS II-III, (2) A MIXTURE OF AT LEAST TWO METALS OF GROUPS II-III, (3) A MIXTURE OF THE TRANSITION METAL CORRESPONDING TO THE TRANSITION METAL IN THE TRANSITION METAL HALIDE AND A HALIDE OF A METAL OF GROUPS II-III, (4) A MIXTURE OF THE TRANSITION METAL CORRESPONDING TO THE TRANSITION METAL IN THE TRANSITION METAL HALIDE AND A METAL OF GROUPS II-III, AND (5) A MIXTURE OF A METAL OF GROUPS II-III AND A HALIDE OF A METAL OF GROUPS II-III TO FORM A SOLID CATALYST COMPONENT, SAID SOLID CATALYST COMPONENT COMPRISING A REDUCED HALIDE OF SAID TRANSITION METAL INTIMATELY ASSOCIATED WITH A HALIDE OF A METAL OF GROUPS II-III; AND ADDING TO THE RESULTING PRODUCTS A METAL ALKYL COMPOUND OF AN ELEMENT OF GROUPS II AND III OF THE PERIODIC TABLE IN AN AMOUNT SUFFICIENT TO GIVE A MOLAR RATIO OF THE METAL ALKYL COMPOUND TO THE REDUCED COMPOUND OF THE TRANSITION METAL OF FROM 0.1 TO 20.
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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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |