Patent US2993854A successfully refreshed from Google Patents.
US2993854A
Expired / Lapsed
US
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Method of regenerating reforming catalysts
Assignee: Texaco Inc
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Filing: 1959-07-30
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Granted: 1961-07-25
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Expires: 1979-07-30
Abstract
No abstract record available.
Inventors
- 👤 Louis D Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J23/90; B01J23/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD FOR HYDROFORMING A PETROLEUM NAPHTHA COMPRISING TREATING SAID NAPHTHA WITH HYDROGEN AT AN ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A ZINC OXIDE-ZINC CHROMITE CATALYST CONTAINING 5 TO 50% BY WEIGHT ANTIMONY OXIDE, AND PERIODICALLY REGENERATING SAID CATALYST BY OXIDATION THEREOF AT AN ELEVATED TEMPERATURE.
Claim 2
Independent Claim
48 words
A METHOD FOR HYDROFORMING A PETROLEUM NAPHTHA COMPRISING TREATING SAID NAPHTHA WITH HYDROGEN AT AN ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A ZINC OXIDE-ZINC CHROMITE CATALYST CONTAINING 5 TO 50% BY WEIGHT ANTIMONY OXIDE, AND PERIODICALLY REGENERATING SAID CATALYST BY OXIDATION THEREOF AT AN ELEVATED TEMPERATURE.
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |