US3251902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isoparaffin-olefin alkylation using crystalline zeolite catalyst
Assignee: ExxonMobil Oil Corp
•
Filing: 1963-07-15
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Granted: 1966-05-17
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 William E Garwood
- 👤 Wilbur K Leaman
- 👤 Claude G Myers
- 👤 Charles J Plank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:23
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR ALKYLATING BRANCED CHAIN HYDROCARBONS WHICH COMPRISES EFFECTING REACTION OF A BRANCHED CHAIN PARAFFIN SELECTED FROM THE GROUP CONSISTING OF ISOBUTANE AND ISOPENTANE WITH AN OLEFIN CONTAINING FROM 2 TO 5 CARBON ATOMS AT FROM ABOUT ROOM TEMPERATURE TO ABOUT 600*F. AND AT A PRESSURE VARYING FROM ATMOSPHERIC TO ABOUT 5000 P.S.I.G. IN CONTACT WITH A CATALYST COMPRISING A CRYSTALLINE ALUMINO-SILICATE HAVING SELECTIVE ACTIVITY FOR EFFECTING ALKYLATION WITH SAID OLEFIN: SAID CRYSTALLINE ALUMINO-SILICATE HAVING UNIFORM PORE OPENINGS OF AT LEAST 7 ANGSTROM UNITS AND AN ACTIVITY CONSTANT OF AT LEAST 5A.
Claim 2
Dependent Claim
93 words
A PROCESS FOR ALKYLATING BRANCED CHAIN HYDROCARBONS WHICH COMPRISES EFFECTING REACTION OF A BRANCHED CHAIN PARAFFIN SELECTED FROM THE GROUP CONSISTING OF ISOBUTANE AND ISOPENTANE WITH AN OLEFIN CONTAINING FROM 2 TO 5 CARBON ATOMS AT FROM ABOUT ROOM TEMPERATURE TO ABOUT 600*F. AND AT A PRESSURE VARYING FROM ATMOSPHERIC TO ABOUT 5000 P.S.I.G. IN CONTACT WITH A CATALYST COMPRISING A CRYSTALLINE ALUMINO-SILICATE HAVING SELECTIVE ACTIVITY FOR EFFECTING ALKYLATION WITH SAID OLEFIN: SAID CRYSTALLINE ALUMINO-SILICATE HAVING UNIFORM PORE OPENINGS OF AT LEAST 7 ANGSTROM UNITS AND AN ACTIVITY CONSTANT OF AT LEAST 5A.
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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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |