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US3462403A
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Polymerization catalyst comprising (1) transition metal amide,(2) znr2 or zncl2 and (3) ziegler catalyst or ziegler catalyst reducing component
Assignee: Columbian Carbon Co
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Filing: 1964-05-11
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Granted: 1969-08-19
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 John F Pendleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:56
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F10/00; C08F4/00; C08F4/06; C08F4/12; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 0
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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) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |