US3287280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization catalyst and process for preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1963-06-14
•
Granted: 1966-11-22
•
Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Colgan Joseph Dennis
- 👤 Chomitz Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:33
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF PREPARING A CATALYST COMPRISING IMPREGNATING A CALCINED FORMED ALUMINA BASE WITH A PHOSPHORIC ACID SOLUTION OF MOLYBDENUM AND NICKEL SALTS CAPABLE OF BEING CONVETED TO THEIR OXIDES UPON CALCINATION, SAID IMPREGNATION SOLUTION CONTAINING SUFFICIENT ACID TO SOLUBILIZE THE SALTS AND TO CONTAIN AT LEAST ABOUT .2 MOLE OF ACID PER MOLE OF MOLYBDENUM BUT INSUFFICIENT TO ADD MORE THAN 10% PHOSPHORIC ACID RESIDUES TO THE FINAL CATALYST COMPOSITION, SAID IMPREGNATING SOLUTION CONTAINING SUFFICIENT MOLYBDENUM AND NICKEL SALT TO IMPART FROM 8 TO ABOUT 20% OF MOLYBDENUM AS THE OXIDE AND 1 TO ABOUT 5% OF NICKEL AS ITS OXIDE, AND THEREAFTER CALCINING THE IMPREGNATED ALUMINA TO CONVERT THE MOLYBDENUM AND NICKEL SALTS TO THEIR OXIDES.
Claim 2
Independent Claim
118 words
A METHOD OF PREPARING A CATALYST COMPRISING IMPREGNATING A CALCINED FORMED ALUMINA BASE WITH A PHOSPHORIC ACID SOLUTION OF MOLYBDENUM AND NICKEL SALTS CAPABLE OF BEING CONVETED TO THEIR OXIDES UPON CALCINATION, SAID IMPREGNATION SOLUTION CONTAINING SUFFICIENT ACID TO SOLUBILIZE THE SALTS AND TO CONTAIN AT LEAST ABOUT .2 MOLE OF ACID PER MOLE OF MOLYBDENUM BUT INSUFFICIENT TO ADD MORE THAN 10% PHOSPHORIC ACID RESIDUES TO THE FINAL CATALYST COMPOSITION, SAID IMPREGNATING SOLUTION CONTAINING SUFFICIENT MOLYBDENUM AND NICKEL SALT TO IMPART FROM 8 TO ABOUT 20% OF MOLYBDENUM AS THE OXIDE AND 1 TO ABOUT 5% OF NICKEL AS ITS OXIDE, AND THEREAFTER CALCINING THE IMPREGNATED ALUMINA TO CONVERT THE MOLYBDENUM AND NICKEL SALTS TO THEIR OXIDES.
References Cited (Backward Citations)
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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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |