US3352652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fuel gas
Assignee: Dow Chemical Co
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Filing: 1964-01-21
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Granted: 1967-11-14
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Expires: 1984-01-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert W Belfit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:34
CPC Classifications
C; C10; C10L; C10L3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A METHOD OF PRODUCING NON-EXPLOSIVE FUEL GAS WHICH COMPRISES (A) EXTRACTING A PRIMARY FUEL SELECTED FROM THE GROUP CONSISTING METHYL ACETYLENE, ALLENE, AND MIXTURES THEREOF, FROM A FLUID MIXTURE CONTAINING THE SAME INTO A SELECTIVE EXTRACTANT THEREFOR TO PRODUCE AN EXTRACTANT CONTAINING UP TO ABOUT 80 MOLE PERCENT TO SAID PRIMARY FUEL DISSOLVED THEREIN, (B) PROVIDING A DILUENT HAVING TWO COMPONENTS, THE FIRST COMPONENT BEING SELECTED FROM THE GROUP CONSISTING OF PROPANE, PROPYLENE, AND MIXTURES THEREOF, THE SECOND COMPONENT CONSISTING OF AT LEAST ONE HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF SATURATED AND ETHYLENICALLY UNSATURATED HYDROCARBONS CONTAINING FOUR CARBON ATOMS, SAID FIRST AND SECOND COMPONENTS BEING PRESENT IN A MOLE RATIO OF FROM ABOUT 0.8 TO ABOUT 19 MOLES OF SAID FIRS TCOMPONENT PER MOLE OF SAID SECOND COMPONENT, (C) MIXING SAID DILUENT AND SAID EXTRACTANT HAVING SAID PRIMARY FUEL DISSOLVED THEREIN IN A MOLE RATIO FROM ABOUT 0.333 TO ABOUT 1.1 MOLES OF DILUENT PER MOLE OF PRIMARY FUEL, AND (D) DISTILLING THE COMBINATION THUS FORMED, THEREBY TO SEPARATE EXTRACTANT THEREFROM AND THUS PRODUCE A NON-EXPLOSIVE FUEL GAS CONTAINING FROM ABOUT 0.333 TO ABOUT 1.1 MOLES OF DILUENT PER MOLE OF PRIMARY FUEL.
Claim 2
Independent Claim
194 words
A METHOD OF PRODUCING NON-EXPLOSIVE FUEL GAS WHICH COMPRISES (A) EXTRACTING A PRIMARY FUEL SELECTED FROM THE GROUP CONSISTING METHYL ACETYLENE, ALLENE, AND MIXTURES THEREOF, FROM A FLUID MIXTURE CONTAINING THE SAME INTO A SELECTIVE EXTRACTANT THEREFOR TO PRODUCE AN EXTRACTANT CONTAINING UP TO ABOUT 80 MOLE PERCENT TO SAID PRIMARY FUEL DISSOLVED THEREIN, (B) PROVIDING A DILUENT HAVING TWO COMPONENTS, THE FIRST COMPONENT BEING SELECTED FROM THE GROUP CONSISTING OF PROPANE, PROPYLENE, AND MIXTURES THEREOF, THE SECOND COMPONENT CONSISTING OF AT LEAST ONE HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF SATURATED AND ETHYLENICALLY UNSATURATED HYDROCARBONS CONTAINING FOUR CARBON ATOMS, SAID FIRST AND SECOND COMPONENTS BEING PRESENT IN A MOLE RATIO OF FROM ABOUT 0.8 TO ABOUT 19 MOLES OF SAID FIRS TCOMPONENT PER MOLE OF SAID SECOND COMPONENT, (C) MIXING SAID DILUENT AND SAID EXTRACTANT HAVING SAID PRIMARY FUEL DISSOLVED THEREIN IN A MOLE RATIO FROM ABOUT 0.333 TO ABOUT 1.1 MOLES OF DILUENT PER MOLE OF PRIMARY FUEL, AND (D) DISTILLING THE COMBINATION THUS FORMED, THEREBY TO SEPARATE EXTRACTANT THEREFROM AND THUS PRODUCE A NON-EXPLOSIVE FUEL GAS CONTAINING FROM ABOUT 0.333 TO ABOUT 1.1 MOLES OF DILUENT PER MOLE OF PRIMARY FUEL.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |