Patent US4811808A successfully refreshed from Google Patents.
US3221002A
Expired / Lapsed
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Process for polymerization utilizing a surface treated inorganic solid catalyst
Assignee: Cabot Corp
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Filing: 1963-09-26
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Granted: 1965-11-30
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Orzechowski Adam
- 👤 James C Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:06
CPC Classifications
C; C08; C08F; C08F10/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR POLYMERIZING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF A MONO-OLEINF, MIXTURES OF MONO-OLEFINS, A DI-OLEFIN, MIXTURES OF DI-OLEFINS AND MIXTURES THEREOF, WHICH COMPRISES CONTACTING SAID SUBSTANCE AT TEMPERATURE BETWEEN ABOUT -25*C. AND ABOUT 250* C. WITH A CATALYST COMPRISING (A) 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
81 words
A PROCESS FOR POLYMERIZING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF A MONO-OLEINF, MIXTURES OF MONO-OLEFINS, A DI-OLEFIN, MIXTURES OF DI-OLEFINS AND MIXTURES THEREOF, WHICH COMPRISES CONTACTING SAID SUBSTANCE AT TEMPERATURE BETWEEN ABOUT -25*C. AND ABOUT 250* C. WITH A CATALYST COMPRISING (A) 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
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 |