US3663646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation with charge stock from isomerization and hydrogenation reactions
Assignee: Phillips Petroleum Co
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Filing: 1970-07-15
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Granted: 1972-05-16
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Expires: 1990-07-15
Abstract
Abstract AN ALKYLATION FEEDSTOCK COMPRISING BUTENE-1, BUTENE-2, ISOBUTYLENE AND N-BUTANE IS FRACTIONATED TO PRODUCE STREAM WHICH ARE ISOMERIZED TO CONVERT THE BUTENE-1 TO BUTENE-2, OR WHICH ARE HYDROGENATED TO CONVERT THE ISOBUTYLENE TO ISOBUTENE. A PLURALITY OF STREAM ARE THUS DIREACTED TO ALKYLATION TO PROVIDE INCREASED YIELD OF ALKYLATE.
Inventors
- 👤 Charles C Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:02
CPC Classifications
C; C07; C07C; C07C9/00; C07C9/14; C07C9/16; C07C2/00; C07C2/54; C07C2/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |