US3117073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reforming process employing platinumalumina catalyst
Assignee: Standard Oil Co
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Filing: 1958-09-30
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Granted: 1964-01-07
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Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 Waldemar R Hertwig
- 👤 Claude O Mckinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:01
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF HYDROFORMING A HYDROCARBON NAPHTHA WHICH COMPRISES CONTACTING SAID NAPHTHA UNDER REFORMING CONDITIONS IN THE PRESENCE OF HYDROGEN-RICH RECYCLE GAS WITH A FIRST PLATINUM-ALUMINA CATALYST HAVING AN ALUMINA SURFACE AREA OF ABOUT 90 TO 120 SQUARE METERS PER GRAM; SUBSEQUENTLY CONTACTING AT LEAST A PORTION OF THE CONTACTED NAPHTHA UNDER REFORMING CONDITIONS IN THE PRESENCE OF HYDROGEN-RICH RECYCLE GAS WITH A SECOND PLATINUM-ALUMINA CATALYST HAVING AN ALUMINA SURFACE GREATER THAN THE MAXIMUM SURFACE AREA OF SAID FIRST CATALYST, AND SEPARATING A REFORMATE PRODUCT.
Claim 2
Independent Claim
85 words
A METHOD OF HYDROFORMING A HYDROCARBON NAPHTHA WHICH COMPRISES CONTACTING SAID NAPHTHA UNDER REFORMING CONDITIONS IN THE PRESENCE OF HYDROGEN-RICH RECYCLE GAS WITH A FIRST PLATINUM-ALUMINA CATALYST HAVING AN ALUMINA SURFACE AREA OF ABOUT 90 TO 120 SQUARE METERS PER GRAM; SUBSEQUENTLY CONTACTING AT LEAST A PORTION OF THE CONTACTED NAPHTHA UNDER REFORMING CONDITIONS IN THE PRESENCE OF HYDROGEN-RICH RECYCLE GAS WITH A SECOND PLATINUM-ALUMINA CATALYST HAVING AN ALUMINA SURFACE GREATER THAN THE MAXIMUM SURFACE AREA OF SAID FIRST CATALYST, AND SEPARATING A REFORMATE PRODUCT.
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |