Patent US2930765A successfully refreshed from Google Patents.
US2930765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of a supported catalyst
Assignee: Distillers Co Yeast Ltd
•
Filing: 1957-02-18
•
Granted: 1960-03-29
•
Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Cooper Leslie Ernest
- 👤 Gower Geoffrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:31
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS OF PRODUCING A SUPPORTED CATALYST WHICH COMPRISES STEEPING A SUPPORTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINA, MAGNESIA, TITANIA, CHROMIA, CHARCOAL, SILICA GEL AND PUMICE IN AN AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES, CARBONATES AND BICABONATES OF ALKALI METALS, RECOVERING AND THEN DRYING THE STEPPED SUPPORTING MATERIAL, AND HEATING THE DRIED SUPPORTING MATERIAL WITH A SOLUTION OF A COMPOUND OF A PLATINUM GROUP METAL IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF ACETONE, ETHYL METHYL KETONE AND DIETHYL KETONE, THEREBY DEPOSITING AN OXIDE OF THE PLATINUM GROUP METAL ON THE SUPPORTING MATERIAL, AND THEREAFTER REDUCING THE OXIDE OF THE PLATINUM GROUP METAL TO THE CORRESPONDING METAL.
Claim 2
Dependent Claim
117 words
A PROCESS OF PRODUCING A SUPPORTED CATALYST WHICH COMPRISES STEEPING A SUPPORTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINA, MAGNESIA, TITANIA, CHROMIA, CHARCOAL, SILICA GEL AND PUMICE IN AN AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES, CARBONATES AND BICABONATES OF ALKALI METALS, RECOVERING AND THEN DRYING THE STEPPED SUPPORTING MATERIAL, AND HEATING THE DRIED SUPPORTING MATERIAL WITH A SOLUTION OF A COMPOUND OF A PLATINUM GROUP METAL IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF ACETONE, ETHYL METHYL KETONE AND DIETHYL KETONE, THEREBY DEPOSITING AN OXIDE OF THE PLATINUM GROUP METAL ON THE SUPPORTING MATERIAL, AND THEREAFTER REDUCING THE OXIDE OF THE PLATINUM GROUP METAL TO THE CORRESPONDING METAL.
References Cited (Backward Citations)
US1222660A
Cited
US2030283A
Cited
US2123732A
Cited
US2475155A
Cited
US2651598A
Cited
US2749359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |