US3245206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion purification apparatus
Assignee: Engelhard Industries Inc
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Filing: 1963-08-02
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Granted: 1966-04-12
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Expires: 1983-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bonnet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:28
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D63/00; B01D63/06; C; C01; C01B; C01B13/00; C01B13/02; C01B13/0229; C01B13/0248; C01B13/0251; C01B13/0255; C01B3/00; C01B3/50; C01B3/501; C01B2203/00; C01B2203/04; C01B2203/0405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A TUBULAR ELEMENT FOR DIFFUSION PURIFICATION OF A GAS COMPRISING IN COMBINATION A THIN-WALLED NON-POROUS TUBE OF METAL THROUGH WHICH THE GAS TO BE PURIFIED DIFFUSES AND MEANS TO INTERNALLY SUPPORT THE TUBE WALLS, SAID MEANS COMPRISING A CYLINDRICAL MEMBER COMPOSED OF A PLURALITY OF INDIVIDUAL CYLINDERS MADE OF KNITTED METAL FILAMENTS WITH THE CYLINDERS BEING IN COAXIAL COMPRESSED NESTED RELATIONSHIP ONE WITHIN ANOTHER, AND THE CYLINDRICAL MEMBER BEING SEATED IN THE TUBE SNUGLY AGAINST THE WALLS OF THE TUBE, WITH THE FILAMENTS ON THE OUTSIDE OF THE CYLINDRICAL MEMBER BEING COATED WITH MATERIAL FROM THE GROUP CONSISTING OF ALUMINA, CERIA AND CHROMIUM.
Claim 2
Dependent Claim
103 words
A TUBULAR ELEMENT FOR DIFFUSION PURIFICATION OF A GAS COMPRISING IN COMBINATION A THIN-WALLED NON-POROUS TUBE OF METAL THROUGH WHICH THE GAS TO BE PURIFIED DIFFUSES AND MEANS TO INTERNALLY SUPPORT THE TUBE WALLS, SAID MEANS COMPRISING A CYLINDRICAL MEMBER COMPOSED OF A PLURALITY OF INDIVIDUAL CYLINDERS MADE OF KNITTED METAL FILAMENTS WITH THE CYLINDERS BEING IN COAXIAL COMPRESSED NESTED RELATIONSHIP ONE WITHIN ANOTHER, AND THE CYLINDRICAL MEMBER BEING SEATED IN THE TUBE SNUGLY AGAINST THE WALLS OF THE TUBE, WITH THE FILAMENTS ON THE OUTSIDE OF THE CYLINDRICAL MEMBER BEING COATED WITH MATERIAL FROM THE GROUP CONSISTING OF ALUMINA, CERIA AND CHROMIUM.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |