Patent US2379705A successfully refreshed from Google Patents.
Patent US2935544A successfully refreshed from Google Patents.
US2935544A
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Process and catalyst for the isomerization of nu-paraffins
Assignee: Pure Oil Co
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Filing: 1957-12-20
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Granted: 1960-05-03
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Expires: 1977-12-20
Abstract
No abstract record available.
Inventors
- 👤 Elmer L Miller
- 👤 Hillis O Folkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:16
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/185; B01J27/1853; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF REFRACTORY, MIXED OXIES CONTAINING ABOUT 50-87% OF SILICA DNA 50-13% BY WEIGHT OF ALUMINA AND HAVING ACIDIC PROPERTIES, COMPOSITED WITH NICKEL IN AN AMOUNT OF NOT LESS THAN ABOUT 3% NOR MORE THAN ABOUT 5% BY WEIGHT, AND A PHOSPHATE OF A METAL FROM THE GROUP CONSISTING OF ALUMINUM AND CALCIU, IN AN AMOUNT OF ABOUT 2-5% BY WEIGHT, SAID NICKEL BEING PRESENT IN AN AMOUNT OF 5% BY WEIGHT WHEN CALCIUM PHOSPHATE IS PRESENT IN THE CATALYST.
Claim 2
Dependent Claim
88 words
A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF REFRACTORY, MIXED OXIES CONTAINING ABOUT 50-87% OF SILICA DNA 50-13% BY WEIGHT OF ALUMINA AND HAVING ACIDIC PROPERTIES, COMPOSITED WITH NICKEL IN AN AMOUNT OF NOT LESS THAN ABOUT 3% NOR MORE THAN ABOUT 5% BY WEIGHT, AND A PHOSPHATE OF A METAL FROM THE GROUP CONSISTING OF ALUMINUM AND CALCIU, IN AN AMOUNT OF ABOUT 2-5% BY WEIGHT, SAID NICKEL BEING PRESENT IN AN AMOUNT OF 5% BY WEIGHT WHEN CALCIUM PHOSPHATE IS PRESENT IN THE CATALYST.
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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |