US3279154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas purification apparatus
Assignee: Engelhard Industries Inc
•
Filing: 1964-02-06
•
Granted: 1966-10-18
•
Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Edward J Emerson
- 👤 Kantrowitz Lionel
- 👤 Niels E Scholer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/06; B01D63/069; B01D2313/00; B01D2313/22; C01B2203/00; C01B2203/04; C01B2203/0405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
APPARATUS FOR DIFFUSION PURIFICATION OF A GAS COMPRISING A CHAMBER HAVING AN OUTLET AND A PLURALITY OF TUBES IN THE CHAMBER, SAID TUBES BEING MADE OF NON-POROUS METAL THROUGH WHICH A PARTICULAR GAS PERMEATES, EACH OF SAID TUBES BEING DOUBLED BACK ON ITSELF OF FORM TWO LEGS WITH A CONNECTING PORTION BETWEEN, SAID INTERCONNECTING PORTION BEING FREE TO MOVE WITHIN THE CHAMBER, EACH OF SAID LEGS BEING SECURED THROUGH A WALL OF THE CHAMBER WHEREBY THE BORES OF THE TUBES OPEN OUTSIDE THE CHAMBER, A PORTION OF BOTH LEGS OF EACH TUBE BEING COILED HELICALLY IN THE SAME DIRECTION ABOUT A COMMON AXIS, THE COILS IN BOTH LEGS OF EACH TUBE BEING SUBSTANTIALLY THE SAME DIAMETER AND INTERTWINED WITH SUCCESSIVE COILS OF ONE LEG ADJA-
Claim 2
Dependent Claim
125 words
APPARATUS FOR DIFFUSION PURIFICATION OF A GAS COMPRISING A CHAMBER HAVING AN OUTLET AND A PLURALITY OF TUBES IN THE CHAMBER, SAID TUBES BEING MADE OF NON-POROUS METAL THROUGH WHICH A PARTICULAR GAS PERMEATES, EACH OF SAID TUBES BEING DOUBLED BACK ON ITSELF OF FORM TWO LEGS WITH A CONNECTING PORTION BETWEEN, SAID INTERCONNECTING PORTION BEING FREE TO MOVE WITHIN THE CHAMBER, EACH OF SAID LEGS BEING SECURED THROUGH A WALL OF THE CHAMBER WHEREBY THE BORES OF THE TUBES OPEN OUTSIDE THE CHAMBER, A PORTION OF BOTH LEGS OF EACH TUBE BEING COILED HELICALLY IN THE SAME DIRECTION ABOUT A COMMON AXIS, THE COILS IN BOTH LEGS OF EACH TUBE BEING SUBSTANTIALLY THE SAME DIAMETER AND INTERTWINED WITH SUCCESSIVE COILS OF ONE LEG ADJA-
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |