US3274754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas purification apparatus
Assignee: Engelhard Industries Inc
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Filing: 1964-01-17
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Granted: 1966-09-27
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:41
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/10; C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0251; C01B3/00; C01B3/50; C01B3/501; C01B2203/00; C01B2203/04; C01B2203/0405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
APPARATUS FOR DIFFUSION PURIFICATION OF A GAS COMPRISING A CHAMBER HAVING TWO END WALLS AND AN OUTLET, AND A DIFFUSION TUBE HAVING A WALL OF NON-POROUS METAL THROUGH WHICH PARTICULAR GAS PERMEATES, SAID TUBE WALL BEING ADAPTED TO SELECTIVELY PERMEATE SAID PARTICULAR GAS THROUGH SAID TUBE WALL, EXTENDING THROUGH THE CHAMBER AND BEING SECURED THROUGH THE TWO END WALLS AND OPENING OUTSIDE THE CHAMBER, SAID TUBE HAVING ONE PORTION WITHIN THE CHAMBER SPIRALLY COILED IN ONE DIRECTION AND ANOTHER PORTION WITHIN THE CHAMBER SPIRALLY COILED IN THE OPPOSITE DIRECTION.
Claim 2
Dependent Claim
89 words
APPARATUS FOR DIFFUSION PURIFICATION OF A GAS COMPRISING A CHAMBER HAVING TWO END WALLS AND AN OUTLET, AND A DIFFUSION TUBE HAVING A WALL OF NON-POROUS METAL THROUGH WHICH PARTICULAR GAS PERMEATES, SAID TUBE WALL BEING ADAPTED TO SELECTIVELY PERMEATE SAID PARTICULAR GAS THROUGH SAID TUBE WALL, EXTENDING THROUGH THE CHAMBER AND BEING SECURED THROUGH THE TWO END WALLS AND OPENING OUTSIDE THE CHAMBER, SAID TUBE HAVING ONE PORTION WITHIN THE CHAMBER SPIRALLY COILED IN ONE DIRECTION AND ANOTHER PORTION WITHIN THE CHAMBER SPIRALLY COILED IN THE OPPOSITE DIRECTION.
References Cited (Backward Citations)
US2536610A
Cited
US2911057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |