US3484424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization process and catalyst system
Assignee: Phillips Petroleum Co
•
Filing: 1966-10-12
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Granted: 1969-12-16
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Expires: 1986-10-12
Abstract
No abstract record available.
Inventors
- 👤 Charles W Moberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:39
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3147238A
Cited
US3147240A
Cited
US3213073A
Cited
US3389129A
Cited
US3269996A
Cited
US3219648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |