US2851399A
Expired / Lapsed
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Stabilized platinum-alumina catalysts containing selenium
Assignee: Standard Oil Co
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Filing: 1955-06-29
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Granted: 1958-09-09
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Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Harry M Brennan
- 👤 Field Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:52
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J27/00; B01J27/02; B01J27/057; B01J27/0573; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A NAPHTHA HYDROFORMING PROCESS WHICH COMPRISES CONTACTING A PETROLEUM NAPHTHA UNDER HYUDROFORMING CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF BETWEEN ABOUT 0.05 AND 1 PERCENT BY WEIGHT OF PLATINUM, BASED ON DRY A12O3, AND BETWEEN ABOUT 0.01 AND 1 ATOM OF SELENIUM PER ATOM OF PLATINUM, SUPPORTED ON ALUMINA.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |