US3305402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum and ruthenium oxide containing catalysts
Assignee: Johnson Matthey PLC
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Filing: 1964-09-28
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Granted: 1967-02-21
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jones Frank
- 👤 Andrew Maurice Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:11
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/92; H01M4/928; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/462; B01J31/00; B01J31/16; H01M2004/8678; H01M2004/8684; H01M2004/8689; H01M2300/00; H01M2300/0002; H01M2300/0005; H01M2300/0011; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A CATALYST MATERIAL FOR USE IN CARRYING OUT CATALYTIC REACTIONS, SAID CATALYST MATERIAL CONSISTING ESSENTIALLY OF AN INTERMOLECULAR MIXTURE OF THE COPRECIPITATED OXIDES OF PLATINUM AND RUTHENIUM, THE SAID OXIDES BEING PRESENT IN THE RELATIVE PROPORTIONS TO GIVE 99-90% BY WEIGHT OF PLATINUM AND 1-10% BY WEIGHT OF RUTHENIUM.
Claim 2
Dependent Claim
49 words
A CATALYST MATERIAL FOR USE IN CARRYING OUT CATALYTIC REACTIONS, SAID CATALYST MATERIAL CONSISTING ESSENTIALLY OF AN INTERMOLECULAR MIXTURE OF THE COPRECIPITATED OXIDES OF PLATINUM AND RUTHENIUM, THE SAID OXIDES BEING PRESENT IN THE RELATIVE PROPORTIONS TO GIVE 99-90% BY WEIGHT OF PLATINUM AND 1-10% BY WEIGHT OF RUTHENIUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |