US3216982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts for polymerization
Assignee: Cabot Corp
•
Filing: 1963-03-28
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Granted: 1965-11-09
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Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Adam Orzechowski
- 👤 James C Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F10/00; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR POLYMERIZING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF MONO-OLEFINS, MIXTURES OF MONOOLEFINS, DI-OLEFINS, MIXTURES OF DI-OLEFINS AND MIXTURES THEREOF WHICH COMPRISES CONTACTING SAID SUBSTANCE AT TEMPERATURES BETWEEN ABOUT -25*C. AND 250*C., WITH A CATALYST COMPRISING THE PRODUCT OF THE REACTION BETWEEN (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 THEROF AT LEAST ABOUT 1X10**-4 EQUIVALENTS PER GRAM OF STRUCTURES CONFORMING TO THE FORMULA
Claim 2
Dependent Claim
83 words
A PROCESS FOR POLYMERIZING A SUBSTANCE CHOSEN FROM THE GROUP CONSISTING OF MONO-OLEFINS, MIXTURES OF MONOOLEFINS, DI-OLEFINS, MIXTURES OF DI-OLEFINS AND MIXTURES THEREOF WHICH COMPRISES CONTACTING SAID SUBSTANCE AT TEMPERATURES BETWEEN ABOUT -25*C. AND 250*C., WITH A CATALYST COMPRISING THE PRODUCT OF THE REACTION BETWEEN (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 THEROF AT LEAST ABOUT 1X10**-4 EQUIVALENTS PER GRAM OF STRUCTURES CONFORMING TO THE FORMULA
References Cited (Backward Citations)
US2820778A
Cited
GB823024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |