US3238704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion purification of gases
Assignee: Engelhard Industries Inc
•
Filing: 1963-03-07
•
Granted: 1966-03-08
•
Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 Heinrich K Straschil
- 👤 Theodore C Lopez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:34
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/08; C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; H; H01; H01M; H01M8/00; H01M8/06; H01M8/0662; C01B2203/00; C01B2203/04; C01B2203/0405; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
AN APPARATUS FOR SEPARATING HYDROGEN FROM A MIXTURE OF GASES CONTAINING HYDROGEN WHICH COMPRISES IN COMBINATION A DIFFUSION CELL CONSISTING OF AN INLET CHAMBER AND A DIFFUSED GAS CHAMBER, SAID CHAMBERS BEING SEPARATED BY A NON-POROUS HYDROGEN-PERMEABLE MEMBRANE COMPOSED OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF PALLADIUM AND PALLADIUM ALLOYS SUPPORTED BY A METAL MESH SANDWICH STRUCTURE WITHIN SAID DIFFUSED GAS CHAMBER, SAID STRUCTRUE COMPRISING AT LEAST ONE INNER COARSE MESH SCREEN, AN INTERMEDIATE FINE MESH SCREEN AND AN OUTER COARSE MESH SCREEN OF 16-32 MESH HAVING FROM 30 TO 60% OPEN AREA, SAID INLET CHAMBER CONTAINING AN INLET FOR SAID MIXTURE, AN OUTLET FOR NON-PERMEATED GASES IN SAID MIXTURE AND SAID DIFFUSED GAS CHAMBER CONTAINING AN OUTLET FOR PERMEATED HYDROGEN.
Claim 2
Independent Claim
123 words
AN APPARATUS FOR SEPARATING HYDROGEN FROM A MIXTURE OF GASES CONTAINING HYDROGEN WHICH COMPRISES IN COMBINATION A DIFFUSION CELL CONSISTING OF AN INLET CHAMBER AND A DIFFUSED GAS CHAMBER, SAID CHAMBERS BEING SEPARATED BY A NON-POROUS HYDROGEN-PERMEABLE MEMBRANE COMPOSED OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF PALLADIUM AND PALLADIUM ALLOYS SUPPORTED BY A METAL MESH SANDWICH STRUCTURE WITHIN SAID DIFFUSED GAS CHAMBER, SAID STRUCTRUE COMPRISING AT LEAST ONE INNER COARSE MESH SCREEN, AN INTERMEDIATE FINE MESH SCREEN AND AN OUTER COARSE MESH SCREEN OF 16-32 MESH HAVING FROM 30 TO 60% OPEN AREA, SAID INLET CHAMBER CONTAINING AN INLET FOR SAID MIXTURE, AN OUTLET FOR NON-PERMEATED GASES IN SAID MIXTURE AND SAID DIFFUSED GAS CHAMBER CONTAINING AN OUTLET FOR PERMEATED HYDROGEN.
References Cited (Backward Citations)
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |