Patent US3043086A successfully refreshed from Google Patents.
Patent US5579425A successfully refreshed from Google Patents.
Patent US3220959A successfully refreshed from Google Patents.
US3220959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a polymerization catalyst
Assignee: Cabot Corp
•
Filing: 1963-03-08
•
Granted: 1965-11-30
•
Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Orzechowski Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:21
CPC Classifications
C; C08; C08F; C08F10/00; B; B01; B01J; B01J21/00; B01J21/02; B01J23/00; B01J27/00; B01J27/24; C08F10/04; C08F10/06; C08F36/00; C08F36/02; C08F36/04; C08F4/00; B01J23/90; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR PRODUCING A POLYMERIZATION CATALYST COMPONENT 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 EQUIVALENTS PER GRAM OF ALKALI METAL WHICH IS LINKED DIRECTLY TO AN OXYGEN ATOM IN THE SURFACE OF SAID OXIDE, AND (B) A COMPOUND CONFORMING TO THE FORMULA:
Claim 2
Dependent Claim
68 words
A PROCESS FOR PRODUCING A POLYMERIZATION CATALYST COMPONENT 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 EQUIVALENTS PER GRAM OF ALKALI METAL WHICH IS LINKED DIRECTLY TO AN OXYGEN ATOM IN THE SURFACE OF SAID OXIDE, AND (B) A COMPOUND CONFORMING TO THE 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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |