US2723947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reforming and isomerization with noble metal catalyst
Assignee: Houdry Process Corp
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Filing: 1951-05-16
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Granted: 1955-11-15
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Expires: 1971-05-16
Abstract
No abstract record available.
Inventors
- 👤 Alex G Oblad
- 👤 Jr Thomas H Milliken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:53
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; C07; C07C; C07C5/00; C07C5/22; C07C5/2206; C07C5/226; C07C5/32; C07C5/321; C07C5/324; C07C5/325; C07C5/373; C07C5/387; C07C5/393; C07C5/41; C07C5/415; C07C5/417; B01J21/00; B01J21/02; B01J21/04; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF PREPARING HYDROCARBON CONVERSION CATALYST WHICH COMPRISES: TREATING PARTICLES OF ACTIVATED ALUMINA WITH AQUEOUS ACIDIC SOLUTION IN ORDER TO MODIFY THE SURFACE CHARACTERISTICS THEREOF WHILE CONTROLLING THE CONDITIONS OF SAID ACID TREATMENT TO LEACH LESS THAN 10% OF THE ALUMINA FROM THE PARTICLES; WASHING THE MILDLY LEACHED ACTIVATED ALUMINA PARTICLES WITH WATER TO AN EXTENT SUBSTANTIALLY SUFFICIENT TO REMOVE THE ANION OF THE ACIDIC SOLUTION; IMPREGNATING THE PURIFIED, HALIDE-FREE, SURFACE-MODIFIED PARTICLES OF ACTIVATED ALUMINA WITH A MINOR QUANTITY OF A COMPOUND OF A NOBLE METAL OF THE PLATINUM GROUP; AND DECOMPOSING SAID COMPOUND TO FORM A NOBLE METAL ON ALUMINA CATALYST.
Claim 2
Independent Claim
103 words
THE METHOD OF PREPARING HYDROCARBON CONVERSION CATALYST WHICH COMPRISES: TREATING PARTICLES OF ACTIVATED ALUMINA WITH AQUEOUS ACIDIC SOLUTION IN ORDER TO MODIFY THE SURFACE CHARACTERISTICS THEREOF WHILE CONTROLLING THE CONDITIONS OF SAID ACID TREATMENT TO LEACH LESS THAN 10% OF THE ALUMINA FROM THE PARTICLES; WASHING THE MILDLY LEACHED ACTIVATED ALUMINA PARTICLES WITH WATER TO AN EXTENT SUBSTANTIALLY SUFFICIENT TO REMOVE THE ANION OF THE ACIDIC SOLUTION; IMPREGNATING THE PURIFIED, HALIDE-FREE, SURFACE-MODIFIED PARTICLES OF ACTIVATED ALUMINA WITH A MINOR QUANTITY OF A COMPOUND OF A NOBLE METAL OF THE PLATINUM GROUP; AND DECOMPOSING SAID COMPOUND TO FORM A NOBLE METAL ON ALUMINA CATALYST.
References Cited (Backward Citations)
US2440673A
Cited
US2542471A
Cited
US2542970A
Cited
US2560329A
Cited
US2474440A
Cited
US2491926A
Cited
US2479110A
Cited
US2550531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |