Patent US3177159A successfully refreshed from Google Patents.
US3177159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroisomerization of olefin
Assignee: Shell USA Inc
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Filing: 1961-12-27
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Granted: 1965-04-06
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Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Rodgers
- 👤 Nager Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:06
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/888; B01J27/00; B01J27/02; B01J27/04; B01J27/047; B01J27/049; B01J37/00; B01J37/20; C; C07; C07C; C07C5/00; C07C5/02; C07C5/13; C07C2521/00; C07C2521/12; C07C2527/00; C07C2527/02; C07C2527/04; C07C2527/047; C07C2527/049; C10; C10G; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A CATALYST WHICH COMPRISES NICKEL AND TUNGSTEN DEPOSITED ON AN ACID-ACTING SUPPORT, THE ATOMIC RATIO OF NICKEL TO TUNGSTEN BEING FROM ABOUT 10 TO 1 TO ABOUT 150 TO 1, THE AMOUNT OF NICKEL BEING FROM ABOUT 0.5 TO ABOUT 20% BY WEIGHT, BASED ON THE TOTAL CATALYST, AND SAID NICKEL AND TUNGSTEN BEING IN THE FORM OF A SULFIDE.
Claim 2
Dependent Claim
60 words
A CATALYST WHICH COMPRISES NICKEL AND TUNGSTEN DEPOSITED ON AN ACID-ACTING SUPPORT, THE ATOMIC RATIO OF NICKEL TO TUNGSTEN BEING FROM ABOUT 10 TO 1 TO ABOUT 150 TO 1, THE AMOUNT OF NICKEL BEING FROM ABOUT 0.5 TO ABOUT 20% BY WEIGHT, BASED ON THE TOTAL CATALYST, AND SAID NICKEL AND TUNGSTEN BEING IN THE FORM OF A SULFIDE.
References Cited (Backward Citations)
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Cited
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |