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US3485770A
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Olefin polymerization catalyst based on aluminum pyrolate
Assignee: Millennium Petrochemicals Inc
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Filing: 1967-03-02
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Granted: 1969-12-23
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Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Borchert
- 👤 Arlen B Mekler
- 👤 Richard W Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:53
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/06; C08G75/08; C08F; C08F10/00; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C08F110/00; C08F110/02; C08F110/14
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) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |