Patent US3254137A successfully refreshed from Google Patents.
US3254137A
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US
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Alkylation reaction product separation
Assignee: Phillips Petroleum Co
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Filing: 1963-11-04
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Granted: 1966-05-31
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 John F Hutto
- 👤 Fred T Sherk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:57
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/005; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C7/04; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A PROCESS WHEREIN AN ALKYLATABLE HYDROCARBON AND AN ALKYLATING HYDROCARBON ARE REACTED IN THE PRESENCE OF HF AND THE REACTION EFFLUENT HYDROCARBON PHASE OF VARIABLE COMPOSITION IS SEPARATED INTO ALKYLATE, N-BUTANE AND PROPANE PRODUCT STREAMS, THE IMPROVEMENT COMPRISING, DISTILLING SAID HYDROCARBON PHASE IN A SINGLE DISTILLATION COLUMN; REMOVING ALKYLATE FROM THE BOTTOM OF SAID DISTILLATION COLUMN AT A SUBSTANTIALLY CONSTANT TEMPERATURE; REMOVING PROPANE AND LIGHTER MATERIALS FROM THE TOP OF SAID DISTILLATION COLUMN AT A SUBSTANTIALLY CONSTANT TEMPERATURE; REMOVING AN ISOBUTANE-RICH VAPOR STREAM FROM SAID DISTILLATION COLUMN AT A POINT OF HIGH ISOBUTANE CONCENTRATION IN AN AMOUNT SUFFICIENT TO MAINTAIN A SUB-
Claim 2
Dependent Claim
103 words
IN A PROCESS WHEREIN AN ALKYLATABLE HYDROCARBON AND AN ALKYLATING HYDROCARBON ARE REACTED IN THE PRESENCE OF HF AND THE REACTION EFFLUENT HYDROCARBON PHASE OF VARIABLE COMPOSITION IS SEPARATED INTO ALKYLATE, N-BUTANE AND PROPANE PRODUCT STREAMS, THE IMPROVEMENT COMPRISING, DISTILLING SAID HYDROCARBON PHASE IN A SINGLE DISTILLATION COLUMN; REMOVING ALKYLATE FROM THE BOTTOM OF SAID DISTILLATION COLUMN AT A SUBSTANTIALLY CONSTANT TEMPERATURE; REMOVING PROPANE AND LIGHTER MATERIALS FROM THE TOP OF SAID DISTILLATION COLUMN AT A SUBSTANTIALLY CONSTANT TEMPERATURE; REMOVING AN ISOBUTANE-RICH VAPOR STREAM FROM SAID DISTILLATION COLUMN AT A POINT OF HIGH ISOBUTANE CONCENTRATION IN AN AMOUNT SUFFICIENT TO MAINTAIN A SUB-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |