Patent US3205178A successfully refreshed from Google Patents.
US3205178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treated metal oxide polymerization catalyst and method of preparation
Assignee: Cabot Corp
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Filing: 1963-09-30
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Granted: 1965-09-07
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Orzechowski Adam
- 👤 James C Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:49
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR PRODUCING A POLYMERIZATION CATALYST WHICH COMPRISES REACTING (A) A FINELY-DIVIDED METAL OXIDE HAVING AN AVERAGE PARTICLE DIAMETER OF LESS THAN ABOUT 0.1 MICRON AND BEARING IN CHEMICAL COMBINATION ON THE SURFACE THEREOF AT LEAST ABOUT 1X10**-4 GRAM ATOOMS PER GRAM OF ALKALI METAL WHICH IS CHEMICALLY LINKED DIRECTLY TO AN OXYGEN ATOM IN THE SURFACE OF SAID OXIDE, WITH (B) A HALIDE OF A METAL OF PERIOD 4 OF GROUP VIII AND SUBSEQUENTLY COMBINING THE RESULTING OXIDE HAVING GROUP VIII METAL BOUND THERETO WITH A COMPOUND CONFORMING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
94 words
A PROCESS FOR PRODUCING A POLYMERIZATION CATALYST WHICH COMPRISES REACTING (A) A FINELY-DIVIDED METAL OXIDE HAVING AN AVERAGE PARTICLE DIAMETER OF LESS THAN ABOUT 0.1 MICRON AND BEARING IN CHEMICAL COMBINATION ON THE SURFACE THEREOF AT LEAST ABOUT 1X10**-4 GRAM ATOOMS PER GRAM OF ALKALI METAL WHICH IS CHEMICALLY LINKED DIRECTLY TO AN OXYGEN ATOM IN THE SURFACE OF SAID OXIDE, WITH (B) A HALIDE OF A METAL OF PERIOD 4 OF GROUP VIII AND SUBSEQUENTLY COMBINING THE RESULTING OXIDE HAVING GROUP VIII METAL BOUND THERETO WITH A COMPOUND CONFORMING TO THE GENERAL FORMULA:
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |