US3148031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for separating and purifying hydrogen by permeation
Assignee: Union Carbide Corp
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Filing: 1961-02-08
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Granted: 1964-09-08
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 Nathan P Vahldieck
- 👤 David I J Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:44
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; C01B2203/00; C01B2203/04; C01B2203/0405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR THE RECOVERY OF HYDROGEN FROM A GASEOUS MIXTURE COMPRISING THE STEPS OF CONTACTING SUCH GASEOUS MIXTURE WITH A FIRST SIDE OF A METALLIC FILM SELECTED FROM THE GROUP CONSISTING OF TANTALUM, TITANIUM, URANIUM, PALLADIUM, AND SILVER-PALLADIUM ALLOYS, SAID FIRST SIDE BEING COATED WITH A DISSIMILAR METAL HYDRIDE SELECTED FROM THE GROUP CONSISTING OF URANIUM, TITANIUM, ZIRCONIUM, THORIUM, AND CERIUM HYDRIDES; PERMEATING THE HYDROGEN THROUGH SAID METALLIC FILM; AND REMOVING SUCH PERMEATED HYDROGEN FROM THE OPPOSITE SIDE OF SAID METALLIC FILM.
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE RECOVERY OF HYDROGEN FROM A GASEOUS MIXTURE COMPRISING THE STEPS OF CONTACTING SUCH GASEOUS MIXTURE WITH A FIRST SIDE OF A METALLIC FILM SELECTED FROM THE GROUP CONSISTING OF TANTALUM, TITANIUM, URANIUM, PALLADIUM, AND SILVER-PALLADIUM ALLOYS, SAID FIRST SIDE BEING COATED WITH A DISSIMILAR METAL HYDRIDE SELECTED FROM THE GROUP CONSISTING OF URANIUM, TITANIUM, ZIRCONIUM, THORIUM, AND CERIUM HYDRIDES; PERMEATING THE HYDROGEN THROUGH SAID METALLIC FILM; AND REMOVING SUCH PERMEATED HYDROGEN FROM THE OPPOSITE SIDE OF SAID METALLIC FILM.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |