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Patent US3418390A successfully refreshed from Google Patents.
US3418390A
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Conversion of olefins
Assignee: Phillips Petroleum Co
•
Filing: 1964-12-28
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Granted: 1968-12-24
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Louis F Heckelsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:05
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J21/00; B01J21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2500146A
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US2614137A
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US2968612A
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US2859175A
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US2941016A
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US3083246A
Cited
US3261879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |