Patent US3342890A successfully refreshed from Google Patents.
US3342890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of dehydrogenation
Assignee: Petro Tex Chemical Corp
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Filing: 1964-04-21
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Granted: 1967-09-19
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Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Louis J Croce
- 👤 Bajars Laimonis
- 👤 Gabliks Maigonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:38
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR THE DEHYDROGENATION OF HYDROCARBONS HAVING AT LEAST FOUR CARBON ATOMS WHICH COMPRISES CONTACTING IN THE VAPOR PHASE AT A TEMPERATURE OF GREATER THAN 250*C. A MIXTURE OF THE SAID HYDROCARBON TO BE DEHYDROGENATED AND FROM 0.2 TO 2.5 MOLS OF OXYGEN PER MOL OF THE SAID HYDROCARBON WITH A CATALYST FOR THE DEHYDROGENATION COMPRISING A MIXED FERRITE OF IRON WITH AT LEAST TWO METALS SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, NICKEL AND COBALT TO PRODUCE A DEHYDROGENATED HYDROCARBON PRODUCT HAVING THE SAME NUMBER OF CARBON ATOMS AS THE SAID HYDROCARBON.
Claim 2
Dependent Claim
95 words
A PROCESS FOR THE DEHYDROGENATION OF HYDROCARBONS HAVING AT LEAST FOUR CARBON ATOMS WHICH COMPRISES CONTACTING IN THE VAPOR PHASE AT A TEMPERATURE OF GREATER THAN 250*C. A MIXTURE OF THE SAID HYDROCARBON TO BE DEHYDROGENATED AND FROM 0.2 TO 2.5 MOLS OF OXYGEN PER MOL OF THE SAID HYDROCARBON WITH A CATALYST FOR THE DEHYDROGENATION COMPRISING A MIXED FERRITE OF IRON WITH AT LEAST TWO METALS SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, NICKEL AND COBALT TO PRODUCE A DEHYDROGENATED HYDROCARBON PRODUCT HAVING THE SAME NUMBER OF CARBON ATOMS AS THE SAID HYDROCARBON.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |