Patent US3485893A successfully refreshed from Google Patents.
US3485893A
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Alkylation process and vessel combining reaction,catalyst separation and coalescence therein
Assignee: Phillips Petroleum Co
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Filing: 1967-06-09
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Granted: 1969-12-23
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Expires: 1987-06-09
Abstract
No abstract record available.
Inventors
- 👤 Luther F Mayhue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:18
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/60; B; B01; B01J; B01J8/00; B01J8/005; B01J8/02; B01J8/0242; B01J8/025; B01J8/0257; B01J8/0278; B01J8/06; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/926
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 |