Patent US3350845A successfully refreshed from Google Patents.
US3350845A
Expired / Lapsed
US
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Metal alloy for hydrogen separation and purification
Assignee: Union Carbide Corp
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Filing: 1965-11-18
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Granted: 1967-11-07
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Expires: 1985-11-18
Abstract
No abstract record available.
Inventors
- 👤 David L Mckinley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:11
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; C01B2203/00; C01B2203/04; C01B2203/0405; C01B2203/0465; C01B2203/0485; C01B2203/0495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A METHOD FOR SEPARATING HYDROGEN FROM A GAS MIXTURE CONTAINING HYDROGEN AND SULFUROUS CONSTITUENTS WHICH METHOD COMPRISES THE STEPS OF DIRECTING A STREAM OF THE GAS MIXTURE TO PROXIMAL SIDE OF A GAS DIFFUSION BARRIER HAVING A FOIL LAYER CONSISTING ESSENTIALLY OF AN ALLOY OF FROM ABOUT 5 TO ABOUT 55 WEIGHT PERCENT GOLD AND THE REST PALLADIUM, DIFFUSING THE HYDROGEN OF THE MIXTURE THROUGH THE FOIL LAYER OF THE BARRIER TO A DISTAL SIDE THEREOF, AND COLLECTING THE HYDROGEN AFTER ITS DIFFUSION WHILE MAINTAINING AT THE BARRIER A PRESSURE DIFFERENTIAL OF AT LEAST 75 P.S.I.G. AND A TEMPERATURE AT WHICH IT IS KNOWN HYDROGEN DIFFUSION TAKES PLACE.
Claim 2
Independent Claim
108 words
A METHOD FOR SEPARATING HYDROGEN FROM A GAS MIXTURE CONTAINING HYDROGEN AND SULFUROUS CONSTITUENTS WHICH METHOD COMPRISES THE STEPS OF DIRECTING A STREAM OF THE GAS MIXTURE TO PROXIMAL SIDE OF A GAS DIFFUSION BARRIER HAVING A FOIL LAYER CONSISTING ESSENTIALLY OF AN ALLOY OF FROM ABOUT 5 TO ABOUT 55 WEIGHT PERCENT GOLD AND THE REST PALLADIUM, DIFFUSING THE HYDROGEN OF THE MIXTURE THROUGH THE FOIL LAYER OF THE BARRIER TO A DISTAL SIDE THEREOF, AND COLLECTING THE HYDROGEN AFTER ITS DIFFUSION WHILE MAINTAINING AT THE BARRIER A PRESSURE DIFFERENTIAL OF AT LEAST 75 P.S.I.G. AND A TEMPERATURE AT WHICH IT IS KNOWN HYDROGEN DIFFUSION TAKES PLACE.
References Cited (Backward Citations)
GB109176A
Cited
US2773561A
Cited
US2824620A
Cited
US3022858A
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US3148031A
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US3155467A
Cited
US3226915A
Cited
US3241293A
Cited
US3238703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |