US3222296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lewis base stabilization of polymerization catalyst in storage
Assignee: Cabot Corp
•
Filing: 1963-07-29
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Granted: 1965-12-07
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Victor D Aftandilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:58
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR STABILIZING , DURING STORAGE, A POLYMERIZATION CATALYST COMPONENT COMPOSITION COMPRISING A FINELY-DIVIDED INORGANIC SOLID HAVING AN AVERAGE PARTICLE DIAMETER OF LESS THAN ABOUT 0.1 MICRON AND CARRYING IN CHEMICAL COMBINATION ON THE SURFACE THEREOF AT LEAST ABOUT 1X10**-4 EQUIVALENTS PER GRAM OF STRUCTURES CONFORMING TO THE FORMULA
Claim 2
Dependent Claim
50 words
A PROCESS FOR STABILIZING , DURING STORAGE, A POLYMERIZATION CATALYST COMPONENT COMPOSITION COMPRISING A FINELY-DIVIDED INORGANIC SOLID HAVING AN AVERAGE PARTICLE DIAMETER OF LESS THAN ABOUT 0.1 MICRON AND CARRYING IN CHEMICAL COMBINATION ON THE SURFACE THEREOF AT LEAST ABOUT 1X10**-4 EQUIVALENTS PER GRAM OF STRUCTURES CONFORMING TO THE FORMULA
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Cited
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Cited
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |