Patent US3278510A successfully refreshed from Google Patents.
US3278510A
Expired / Lapsed
US
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Stable catalyst systems for highly crystalline alpha olefin polymers
Assignee: Union Carbide Corp
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Filing: 1963-01-28
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Granted: 1966-10-11
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Ingberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:50
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
METHOD FOR POLYMERIZING OLEFINICALLY UNSATURATED HYDROCARBON MONOMERS HAVING THE FORMULA R0 -CH=CH2 WHEREIN R0 IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, SATURATED ALIPHATIC, ALICYCLIC AND AROMATIC HYDROCARBON GROUPS WHICH COMPRISES CONTRACTING 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 EXCEEDINGS 500 ANGSTROMS, SAID CATALYST HAVING BEEN PRODUCD FROM A CO-CATALYST COMPRISING THE FLUID SHEAR REACTION PRODUCT OF (A) TRANSITION METAL HALIDES HAVING THE FORMULA
References Cited (Backward Citations)
US3112300A
Cited
US3032510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |