US3380934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noble metal catalysts and their production
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-10-20
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Granted: 1968-04-30
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Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 John S Batzold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:58
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J37/0018; B01J37/34; B01J37/348
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
A METHOD OF MAKING A HIGHLY ACTIVE NOBLE METAL CATALYST WHICH COMPRISES THE STEPS OF: (A) IMPREGNATING A SUPPORT WITH A SALT OF A NOBLE METAL AND A SALT OF A LESS NOBLE METAL; (B) RUDUCING THE METAL IONS OF SAID SALTS; (C) REMOVING SAID SUPPORT; AND (D) REMOVING SAID LESS NOBLE METAL BY ANODIZATION, SAID LESS NOBLE METAL ALWAYS BEING DIFFERENT FROM THE NOBLE METAL AND ALWAYS HAVING THE PROPERTY OF BEING MORE READILY DISSOLVED THAN SAID NOBLE METAL.
Claim 2
Independent Claim
80 words
A METHOD OF MAKING A HIGHLY ACTIVE NOBLE METAL CATALYST WHICH COMPRISES THE STEPS OF: (A) IMPREGNATING A SUPPORT WITH A SALT OF A NOBLE METAL AND A SALT OF A LESS NOBLE METAL; (B) RUDUCING THE METAL IONS OF SAID SALTS; (C) REMOVING SAID SUPPORT; AND (D) REMOVING SAID LESS NOBLE METAL BY ANODIZATION, SAID LESS NOBLE METAL ALWAYS BEING DIFFERENT FROM THE NOBLE METAL AND ALWAYS HAVING THE PROPERTY OF BEING MORE READILY DISSOLVED THAN SAID NOBLE METAL.
Claim 3
Dependent Claim
101 words
A METHOD AS CLAIMED IN CLAIM 1 WHEREIN THE NOBLE METAL IS SELECTED FROM THE GROUP CONSISTING OF PLATINUM, RUTHENIUM, RHODIUM, PALLADIU, IRIDIUM, OSMIUM, RHENIUM, VANADIUM, TITANIUM, TUNGSTEN, GOLD, COBALT, NICKEL AND THE LANTHANIDE SERIES METALS SUCH AS CERIUM, NEODYMIUM, SAMARIUM, GADOLINIUM, PROMETHIUM, YTTERBIUM, TERBIUM AND COMBINATIONS OF THE FOREGOING METALS AND THE LESS NOBLE METAL IS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, COPPER, MOLYBDENUM, CADMIUM, TIN, LEAD, ALUMINUM AND SILVER, SAID LESS NOBLE METAL ALWAYS BEING DIFFERENT FROM THE NOBLE METAL AND ALWAYS HAVING THE PROPERTY OF BEING MORE READILY DISSOLVED THAN SAID NOBLE METAL.
References Cited (Backward Citations)
CA461039A
Cited
US1686391A
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US2254976A
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GB606348A
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US2980749A
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US3341446A
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US3341936A
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US3287171A
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US3275567A
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US3305402A
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |