Patent US4465790A successfully refreshed from Google Patents.
US4465790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrotreating catalyst
Assignee: Wyeth Holdings LLC
•
Filing: 1983-03-17
•
Granted: 1984-08-14
•
Expires: 2003-03-17
Abstract
Abstract Improved hydrodenitrogenation catalysts comprise catalytic metals, e.g. molybdenum and nickel, on supports of co-precipitated alumina and titania with more than 5% of the catalyst weight consisting of titanium oxide in the support.
Inventors
- 👤 William H. Quayle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/883; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B01J21/00; B01J21/06; B01J21/063; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
45 words
Hydrodenitrogenation catalyst comprising catalytic molybdenum and nickel on a catalyst support consisting essentially of co-precipitated alumina and titania with an amount of titania in the support sufficient to constitute more than 5% of the catalyst weight of a finished hydrodenitrogenation catalyst made on said support.
Claim 2
Dependent Claim
45 words
Hydrodenitrogenation catalyst comprising catalytic molybdenum and nickel on a catalyst support consisting essentially of co-precipitated alumina and titania with an amount of titania in the support sufficient to constitute more than 5% of the catalyst weight of a finished hydrodenitrogenation catalyst made on said support.
Claim 3
Dependent Claim
26 words
Hydrodenitrogenation catalyst defined by claim 1 wherein the titania content of the catalyst support constitutes from about 6 to about 8% of the total catalyst weight.
References Cited (Backward Citations)
US1822848A
Cited
US2319948A
Cited
US3016346A
Cited
US3262874A
Cited
US3394077A
Cited
US4196101A
Cited
US4382854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |