US3309306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powerformer startup procedure using nitrogen-hydrogen mixtures
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-10-16
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Granted: 1967-03-14
•
Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Donald D Maclaren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:24
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN THE HYDROFORMING OF A NAPHTHA FEED FRACTION AT CONVERSION CONDITIONS OF HYDROGEN RECYCLE, TEMPERATURE AND PRESURE IN A HYDROFORMING ZONE, AND IN THE PRESENCE OF AN ACTIVE HYDROFORMING CATALYST SELECTED FROM THE GROUP CONSISTING OF SUPPORTED PLATINUM AND SUPPORTED PALLADIUM, THE IMPROVEMENT WHICH COMPRISES THE INCREASING OF CATALYST EFFICIENCY BY ADDING A MIXTURE OF GASEOUS NITROGEN AND HYDROGEN TO THE HYDROFORMING ZONE BEFORE THE ADDITION OF THE NAPTHA FEED, HEATING AND CIRCULATING THE NITRO-
Claim 2
Dependent Claim
75 words
IN THE HYDROFORMING OF A NAPHTHA FEED FRACTION AT CONVERSION CONDITIONS OF HYDROGEN RECYCLE, TEMPERATURE AND PRESURE IN A HYDROFORMING ZONE, AND IN THE PRESENCE OF AN ACTIVE HYDROFORMING CATALYST SELECTED FROM THE GROUP CONSISTING OF SUPPORTED PLATINUM AND SUPPORTED PALLADIUM, THE IMPROVEMENT WHICH COMPRISES THE INCREASING OF CATALYST EFFICIENCY BY ADDING A MIXTURE OF GASEOUS NITROGEN AND HYDROGEN TO THE HYDROFORMING ZONE BEFORE THE ADDITION OF THE NAPTHA FEED, HEATING AND CIRCULATING THE NITRO-
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |