US2916439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming process with molybdena on alumina-silica catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-11-10
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Granted: 1959-12-08
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Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Otto Schricker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:05
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; B01J23/00; B01J23/16; B01J23/24; B01J23/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A PROCESS FOR HYDROFORMING PETROLEUM NAPHTHAS IN CONTACT WITH FINELY DIVIDED MOLYBDENA CATALYST PARTICLES AT 750 TO 1150* F., SAID MOLYBDENA BEING ON A CARRIER CONTAINING A MAJOR PROPORTION OF ALUMINA AND A MINOR PROPORTION OF SILICA, AND IN ACCORDANCE WITH THE FLUIDIZED SOLIDS TECHNIQUE THE IMPROVEMENT WHICH COMPRISES HEATING THE CATALYST TO A TEMPERATURE OF 1400*1500* F. FOR FROM ONE TO SIX HOURS IN A FLOWING STREAM OF INERT GAS COOLING THE HEATING CATALYST TO A TEMPERATURE OF ABOVE 150*F., AND CHARGING SAID HOT CATALYST TO THE HYDROFORMING PROCESS IMMEDIATELY SO THAT IT DOES NOT COOL DOWN BELOW A MINIMUM TEMPERATURE OF 750*F.
Claim 2
Dependent Claim
105 words
IN A PROCESS FOR HYDROFORMING PETROLEUM NAPHTHAS IN CONTACT WITH FINELY DIVIDED MOLYBDENA CATALYST PARTICLES AT 750 TO 1150* F., SAID MOLYBDENA BEING ON A CARRIER CONTAINING A MAJOR PROPORTION OF ALUMINA AND A MINOR PROPORTION OF SILICA, AND IN ACCORDANCE WITH THE FLUIDIZED SOLIDS TECHNIQUE THE IMPROVEMENT WHICH COMPRISES HEATING THE CATALYST TO A TEMPERATURE OF 1400*1500* F. FOR FROM ONE TO SIX HOURS IN A FLOWING STREAM OF INERT GAS COOLING THE HEATING CATALYST TO A TEMPERATURE OF ABOVE 150*F., AND CHARGING SAID HOT CATALYST TO THE HYDROFORMING PROCESS IMMEDIATELY SO THAT IT DOES NOT COOL DOWN BELOW A MINIMUM TEMPERATURE OF 750*F.
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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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |