US3086860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous metallic membranes and methods of manufacturing them
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1957-07-22
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Granted: 1963-04-23
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Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 Moutaud Gilberte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1121; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD OF MAKING POROUS NICKEL MEMBRANES COMPRISING MIXING A FINELY DIVIDED NICKEL SUSPENSION WITH AN AQUEOUS POLYTETRAFLOROETHYLENE SUSPENSION, ADDING A SOLVENT, THEREBY OBTAINING A COAGULATE CONTAININGG THE NICKEL IN HOMOGENEOUS DISPERSION IN THE POLYTETRAFLUOROETHYLENE, FORMING THE COAGULATE TO A SHEET AND HEATING SAID SHEET AT A TEMPERATURE OF ABOUT 450 TO 800*C., THEREBY SIMULTANEOUSLY EVAPORATING THE POLYTETRAFLUOROETHYLENE AND SINTERING THE NICKEL POWDER TO A POROUS MEMBRANE.
Claim 2
Independent Claim
67 words
A METHOD OF MAKING POROUS NICKEL MEMBRANES COMPRISING MIXING A FINELY DIVIDED NICKEL SUSPENSION WITH AN AQUEOUS POLYTETRAFLOROETHYLENE SUSPENSION, ADDING A SOLVENT, THEREBY OBTAINING A COAGULATE CONTAININGG THE NICKEL IN HOMOGENEOUS DISPERSION IN THE POLYTETRAFLUOROETHYLENE, FORMING THE COAGULATE TO A SHEET AND HEATING SAID SHEET AT A TEMPERATURE OF ABOUT 450 TO 800*C., THEREBY SIMULTANEOUSLY EVAPORATING THE POLYTETRAFLUOROETHYLENE AND SINTERING THE NICKEL POWDER TO A POROUS MEMBRANE.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |