Patent US3238703A successfully refreshed from Google Patents.
US3238703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion purification of gases
Assignee: Engelhard Industries Inc
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Filing: 1963-03-07
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Granted: 1966-03-08
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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
2026-10-31 17:58
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/08; B01D63/087; C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; H; H01; H01M; H01M8/00; H01M8/06; H01M8/0662; B01D2313/00; B01D2313/40; C01B2203/00; C01B2203/04; C01B2203/0405; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 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 OUTLET CHAMBER, SAID CHAMBERS BEING SEPARATED BY A NON-POROUS HYDROGEN-PERMEABLE FOIL CONTAINING PALLADIUM, SAID INLET CHAMBER CONTAINING AN INLET FOR SAID MIXTURE OF GASES AND AN OUTLET FOR NON-PERMEATED GASES IN SAID MIXTURE AND CORRUGATED BAFFLE MEANS DISPOSED WITHIN SAID INLET CHAMBER BEING ELONGATED IN A DIRECTION GENERALLY PARALLEL TO THE FOIL FOR REPEATEDLY DIRECTING THE FLOW OF FEED GAS WITHIN SAID CHAMBER TOWARD SAID FOIL, SAID INLET BEING LOCATED TO PROVIDE FOR INLET GAS FLOW IN SAID SAM GENERALLY PARALLEL DIRECTION EACH CORRUGATION OF SAID BAFFLE MEANS BEING PROVIDED ON THE SIDE FACING THE INLET GAS FLOW WITH A SERIES OF DISCRETE OPENINGS, SAID BAFFLE MEANS BEING OF CROSS-SECTIONAL AREA TRANSVERSE TO THE FLOW OF INLET GAS SUBSTANTIALLY EQUAL TO THE CROSS-SECTIONAL AREA OF THE INLET CHAMBER AND BEING SUPPORTED IN SPACE RELATIONSHIP FROM SAID FOIL TO PROVIDE A PASSAGE BETWEEN ABOUT 0.010 INCH AND 0.030 INCH FOR FLOW OF GAS ALONG THE SURFACE OF SAID FOIL.
Claim 2
Independent Claim
186 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 OUTLET CHAMBER, SAID CHAMBERS BEING SEPARATED BY A NON-POROUS HYDROGEN-PERMEABLE FOIL CONTAINING PALLADIUM, SAID INLET CHAMBER CONTAINING AN INLET FOR SAID MIXTURE OF GASES AND AN OUTLET FOR NON-PERMEATED GASES IN SAID MIXTURE AND CORRUGATED BAFFLE MEANS DISPOSED WITHIN SAID INLET CHAMBER BEING ELONGATED IN A DIRECTION GENERALLY PARALLEL TO THE FOIL FOR REPEATEDLY DIRECTING THE FLOW OF FEED GAS WITHIN SAID CHAMBER TOWARD SAID FOIL, SAID INLET BEING LOCATED TO PROVIDE FOR INLET GAS FLOW IN SAID SAM GENERALLY PARALLEL DIRECTION EACH CORRUGATION OF SAID BAFFLE MEANS BEING PROVIDED ON THE SIDE FACING THE INLET GAS FLOW WITH A SERIES OF DISCRETE OPENINGS, SAID BAFFLE MEANS BEING OF CROSS-SECTIONAL AREA TRANSVERSE TO THE FLOW OF INLET GAS SUBSTANTIALLY EQUAL TO THE CROSS-SECTIONAL AREA OF THE INLET CHAMBER AND BEING SUPPORTED IN SPACE RELATIONSHIP FROM SAID FOIL TO PROVIDE A PASSAGE BETWEEN ABOUT 0.010 INCH AND 0.030 INCH FOR FLOW OF GAS ALONG THE SURFACE OF SAID FOIL.
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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 |