Patent US2779458A successfully refreshed from Google Patents.
US2779458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective solvent for acetylene
Assignee: Phillips Petroleum Co
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Filing: 1952-12-22
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Granted: 1957-01-29
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Expires: 1972-12-22
Abstract
No abstract record available.
Inventors
- 👤 William T Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:19
CPC Classifications
C; C10; C10L; C10L3/00; C10L3/02; C10L3/04; C07; C07C; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
THE PROCESS OF SEPARATING AN UNSATURATED HYDROCARBON FROM S LESS UNSATURATED HYDROCARBON WHICH COMPRISES CONTACTING SAID HYDROCARBONS WITH A SOLVENT CONSISTING ESSENTIALLY OF ETHYLENE DIAMINE AT A TEMPERATURE BELOW ABOUT 116*C. AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND SEPARATING ETHYLENE DIAMINE CONTAINING DISSOLVED UNDSTURATED HYDROCARBONS FORM THE REMAINING LESS UNSATURATED HYDROCARBONS.
Claim 2
Dependent Claim
50 words
THE PROCESS OF SEPARATING AN UNSATURATED HYDROCARBON FROM S LESS UNSATURATED HYDROCARBON WHICH COMPRISES CONTACTING SAID HYDROCARBONS WITH A SOLVENT CONSISTING ESSENTIALLY OF ETHYLENE DIAMINE AT A TEMPERATURE BELOW ABOUT 116*C. AND AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND SEPARATING ETHYLENE DIAMINE CONTAINING DISSOLVED UNDSTURATED HYDROCARBONS FORM THE REMAINING LESS UNSATURATED HYDROCARBONS.
Claim 3
Dependent Claim
17 words
A PACKAGE WHICH COMPRISES A PRESSURE RESISTANT CONTAINER, AN OBSORBENT MATERIAL SATURATED WITH ETHYLENE DIAMINE AND ACETYLENE.
Claim 4
Dependent Claim
17 words
A PACKAGE WHICH COMPRISES A PRESSURE RESISTANT CONTAINER, AN OBSORBENT MATERIAL SATURATED WITH ETHYLENE DIAMINE AND ACETYLENE.
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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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |