US2820073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of hydrocarbons
Assignee: Phillips Petroleum Co
•
Filing: 1954-01-26
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Granted: 1958-01-14
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Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Rolland E Dixon
- 👤 Charles C Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:25
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A METHOD OF INCREASING THE CAPACITY OF AN ALKYLATION UNIT COMPRISING A SERIES OF CONTACTOR ZONES, IN WHICH AN ISOPARAFFIN IS CONTACTED WITH AN OLEFIN UNDER ALKYLATION CONDITIONS, THUS OBTAINING FROM EACH ZONE AN ALKYLATION EFFLUENT CONTAINING UNREACTED ISOPARAFFIN, NORMAL PARAFFIN AND ALKYLATE, WHICH COMPRISES IN A FRACTIONATING ZONE FRACTIONATING THE EFFLUENT FROM EACH OF SAID CONTACTOR ZONES TO REMOVE THEREFROM BY A ROUGH SEPARATION A SUBSTANTIAL PROPORTION BUT NOT ALL OF SAID UNREACTED ISOPARAFFIN SUBSTANTIALLY FREE FROM NORMAL PARAFFIN AND ALKYLATE YIELDING A STREAM CONTAINING SUBSTANTIALLY ALL OF THE NORMAL PARAFFIN, ALKYLATE AND SOME ISOPARAFFIN ORIGINALLY CONTAINED IN SAID ALKYLATION EFFLUENTS, RETURNING SAID
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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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |