US3221073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of olefins
Assignee: Monsanto Co
•
Filing: 1961-10-27
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Granted: 1965-11-30
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 George D Davis
- 👤 Jr Earle C Makin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:56
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/177; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE PURIFICATION OF OLEFIN HYDROCARBONS CONTAINING MORE UNSATURATED HYDROCARBON IMPURITIES WHICH COMPRISES CONTACTING AN OLEFIN HYDROCARBON STREAM CONTAINING SAID MORE UNSATURATED HYDROCARBON IMPURITIES WITH A CRYSTALLINE ZEOLITE HAVING PORE DIAMETERS OF 6 TO 15 ANGSTROMS, AT LEAST A PORTION OF THE IONS OF WHICH HAVE BEEN EXCHANGED WITH A POLYMERIZATION PROMOTING METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, MERCURY, SILVER, COPPER, NICKEL AND COBALT AT TEMPERATURES OF 100 TO 400*C. AND AT PRESSURES OF FROM ATMOSPHERIC TO 500 P.S.I.G.
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE PURIFICATION OF OLEFIN HYDROCARBONS CONTAINING MORE UNSATURATED HYDROCARBON IMPURITIES WHICH COMPRISES CONTACTING AN OLEFIN HYDROCARBON STREAM CONTAINING SAID MORE UNSATURATED HYDROCARBON IMPURITIES WITH A CRYSTALLINE ZEOLITE HAVING PORE DIAMETERS OF 6 TO 15 ANGSTROMS, AT LEAST A PORTION OF THE IONS OF WHICH HAVE BEEN EXCHANGED WITH A POLYMERIZATION PROMOTING METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, MERCURY, SILVER, COPPER, NICKEL AND COBALT AT TEMPERATURES OF 100 TO 400*C. AND AT PRESSURES OF FROM ATMOSPHERIC TO 500 P.S.I.G.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |