Patent US437654A successfully refreshed from Google Patents.
Patent US2989488A successfully refreshed from Google Patents.
US2989488A
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Platinum-containing catalysts and their preparation
Assignee: Atlantic Richfield Co
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Filing: 1954-06-02
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Granted: 1961-06-20
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Expires: 1974-06-02
Abstract
No abstract record available.
Inventors
- 👤 Jr James E Connor
- 👤 Clifford S Shipley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:26
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF MANUFACTURING A CATALYST WHICH COMPRISES IMPREGNATING AN ACIDIC METAL OXIDE COMPONENT WITH AN AQUEOUS SOLUTION OF PLATINOUS TETRAMMINOHYDROXIDE, AGING THE IMPREGNATED ACIDIC METAL OXIDE COMPONENT FOR AT LEAST THREE HOURS AT A TEMPERATURE OF FROM ABOUT 210* F. TO ABOUT 212* F., DRYING THE IMPREGNATED ACIDIC METAL OXIDE COMPONENT AND CONVERTING THE PLATINUM IMPREGNATED ON THE ACIDIC METAL OXIDE COMPONENT TO THE METAL, THE AMOUNT OF PLATINUM RANGING BETWEEN 0.1 PERCENT AND 2.5 PERCENT BY WEIGHT OF THE FINAL CATALYST.
Claim 2
Independent Claim
83 words
A METHOD OF MANUFACTURING A CATALYST WHICH COMPRISES IMPREGNATING AN ACIDIC METAL OXIDE COMPONENT WITH AN AQUEOUS SOLUTION OF PLATINOUS TETRAMMINOHYDROXIDE, AGING THE IMPREGNATED ACIDIC METAL OXIDE COMPONENT FOR AT LEAST THREE HOURS AT A TEMPERATURE OF FROM ABOUT 210* F. TO ABOUT 212* F., DRYING THE IMPREGNATED ACIDIC METAL OXIDE COMPONENT AND CONVERTING THE PLATINUM IMPREGNATED ON THE ACIDIC METAL OXIDE COMPONENT TO THE METAL, THE AMOUNT OF PLATINUM RANGING BETWEEN 0.1 PERCENT AND 2.5 PERCENT BY WEIGHT OF THE FINAL CATALYST.
References Cited (Backward Citations)
US2550531A
Cited
US2635080A
Cited
US2623860A
Cited
BE516099A
Cited
FR1071285A
Cited
US2834740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |