Patent US4646771A successfully refreshed from Google Patents.
Patent US2579669A successfully refreshed from Google Patents.
US2579669A
Expired / Lapsed
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Catalytic isomerization of acetylenic hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1948-12-06
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Granted: 1951-12-25
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Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 John C Hillyer
- 👤 Joseph F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:19
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C2521/00; C07C2521/02; C07C2521/04; C07C2527/00; C07C2527/06; C07C2527/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE PROCESS WHICH COMPRISES CONTACTING A REACTION MIXTURE COMPRISING HYDROGEN FLUORIDE AND AN ACETYLENIC HYDROCARBON CONTAINING NO MORE THAN 20 CARBON ATOMS PER MOLECULE IN A MOLAR RATIO LESS THAN 1:1 WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINUM OXIDE, ALUMINUM FLUORIDE, AND ALUMINUM OXIDE-ALUMINUM FLUORIDE COMPOSITE AT A TEMPERATURE WITHIN THE RANGE OF 300 TO 700* F., SO AS TO PRODUCE CHIEFLY AN ACETYLENIC HYDROCARBON OF THE SAME SKELETAL STRUCTURE CONTAINING AN ACETYLENIC LINKAGE IN A MORE CENTRAL POSITION IN THE CARBON CHAIN THAN IN SAID FIRST-NAMED ACETYLENIC HYDROCARBON.
Claim 2
Dependent Claim
92 words
THE PROCESS WHICH COMPRISES CONTACTING A REACTION MIXTURE COMPRISING HYDROGEN FLUORIDE AND AN ACETYLENIC HYDROCARBON CONTAINING NO MORE THAN 20 CARBON ATOMS PER MOLECULE IN A MOLAR RATIO LESS THAN 1:1 WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINUM OXIDE, ALUMINUM FLUORIDE, AND ALUMINUM OXIDE-ALUMINUM FLUORIDE COMPOSITE AT A TEMPERATURE WITHIN THE RANGE OF 300 TO 700* F., SO AS TO PRODUCE CHIEFLY AN ACETYLENIC HYDROCARBON OF THE SAME SKELETAL STRUCTURE CONTAINING AN ACETYLENIC LINKAGE IN A MORE CENTRAL POSITION IN THE CARBON CHAIN THAN IN SAID FIRST-NAMED ACETYLENIC HYDROCARBON.
References Cited (Backward Citations)
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Cited
US2289375A
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US2324708A
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US2450039A
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US2471647A
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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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |