Patent US3202645A successfully refreshed from Google Patents.
US3202645A
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Surface treated inorganic solid polymerization catalyst and method of polymerization therewith
Assignee: Cabot Corp
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Filing: 1964-12-16
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Granted: 1965-08-24
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Joel A Yancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:10
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F10/00; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A PROCESS FOR POLYMERIZING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF A MONO-OLEFIN, MIXTURES OF MONOOLEFINS, A DI-OLEFIN, MIXUTRES OF DI-OLEFINS, AND MIXTURES THEREOF WHICH COMPRISES CONTACTING SAID SUBSTANCE AT TEMPERATURES BETWEEN 25*C AND 250*C., WITH A CATALYST COMPRISING (A) FINELY-DIVIDED INROGANIC SOLID HAVING AN AVERAGE PARTICLE DIAMETER OF LESS THAN BOUT 0.1 MICRON AND HAVING CHEMICALLY LINKED DRIECTLY TO OXYGEN ATOMS IN THE SURFACE THEROF AT LEAST ABOUT 1X10**-4 EQUIVALENTS PER GRAM OF STRUCTURES CONFORMING TO THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |