US3179604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable olefin catalyst systems
Assignee: Union Carbide Corp
•
Filing: 1961-08-21
•
Granted: 1965-04-20
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Ingberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:01
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
METHOD FOR THE PREPARATION OF HIGHLY GEOMETRICALLY UNIFORM, ESSENTIALLY SPHEROIDAL PARTICULATE ORGANO-METALLIC CATALYSTS FROM (A) TRANSITION METAL HALIDES HAVING THE FORMULA
Claim 2
Dependent Claim
21 words
METHOD FOR THE PREPARATION OF HIGHLY GEOMETRICALLY UNIFORM, ESSENTIALLY SPHEROIDAL PARTICULATE ORGANO-METALLIC CATALYSTS FROM (A) TRANSITION METAL HALIDES HAVING THE FORMULA
References Cited (Backward Citations)
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US2659717A
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US2962451A
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US3058970A
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |