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US3293232A
Expired / Lapsed
US
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Stable olefin catalyst systems
Assignee: Union Carbide Corp
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Filing: 1964-03-02
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Granted: 1966-12-20
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Ingberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:44
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906; Y10S526/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
METHOD FOR POLYMERIZING OLEFINICALLY UNSATURATED DROCARBON MONOMERS HAVING THE FORMULA R-CH=CH2 WHEREIN R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, SATURATED ALIPHATIC, ALICYCLIC AND AROMATIC HYDROCARBON GROUPS WHICH COMPRISES CONTACTING SAID MONOMER WITH A HIGHLY GEOMETRICALLY UNIFORM ESSENTIALLY SPHEROIDAL PARTICULATE ORGANO-METALLIC CATALYST HAVING AN AVERAGE PARTICLE SIZE BETWEEN 200 AND 300 ANGSTROMS IN DIAMETER AND WHEREIN NO APPRECIABLE NUMBER OF PARTICLES EXCEEDS 500 ANGSTROMS, SAID CATALYST HAVING BEEN PRODUCED FROM (A) TRANSITION METAL HALIDES HAVING THE FORMULA
Claim 2
Dependent Claim
80 words
METHOD FOR POLYMERIZING OLEFINICALLY UNSATURATED DROCARBON MONOMERS HAVING THE FORMULA R-CH=CH2 WHEREIN R IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, SATURATED ALIPHATIC, ALICYCLIC AND AROMATIC HYDROCARBON GROUPS WHICH COMPRISES CONTACTING SAID MONOMER WITH A HIGHLY GEOMETRICALLY UNIFORM ESSENTIALLY SPHEROIDAL PARTICULATE ORGANO-METALLIC CATALYST HAVING AN AVERAGE PARTICLE SIZE BETWEEN 200 AND 300 ANGSTROMS IN DIAMETER AND WHEREIN NO APPRECIABLE NUMBER OF PARTICLES EXCEEDS 500 ANGSTROMS, SAID CATALYST HAVING BEEN PRODUCED FROM (A) TRANSITION METAL HALIDES HAVING THE FORMULA
References Cited (Backward Citations)
US2491116A
Cited
US2647111A
Cited
US2659717A
Cited
US2962451A
Cited
US3058970A
Cited
US2976252A
Cited
US3041325A
Cited
US2991157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |