US3287112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of filter membranes
Assignee: Selas Corp of America
•
Filing: 1963-11-26
•
Granted: 1966-11-22
•
Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Blaha Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:43
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/02; B01D71/024; B01D67/00; B01D67/0039; B01D67/0041; B01D67/0069; B01D71/022; B01D71/0223; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1121; B22F3/1143; B22F7/00; B22F7/002; B01D2323/00; B01D2323/08; B01D2323/081; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF PRODUCING A POROUS MEMBRANE OF A METAL WHICH COMPRISES MIXING POWDERED OXIDE OF THE METAL WITH A POWDERED BINDER AND A SOLVENT FOR THE BINDER TO OBTAIN A THIN LIQUID OF UNIFORM CONSISTENCY, PLACING A THIN LAYER OF THE LIQUID ON A SUPPORT, PERMITTING THE SOLVENT TO EVAPORATE TO LEAVE A LAYER OF BINDER AND METAL OXIDE ON THE SUPPORT, HEATING THE SUPPORT AND LAYER OF MATERIAL THREON TO A TEMPERATURE SUFFICIENT TO DECOMPOSE THE OXIDE BY DRIVING OUT THE OXYGEN AND BURNING OUT THE BINDER, THEREBY LEAVING A THIN LAYER OF POROUS METAL ON THE SUPPORT, AND REMOVING THE LAYER OF METAL FROM THE SUPPORT AS A POROUS METAL MEMBRANE.
Claim 2
Independent Claim
114 words
THE METHOD OF PRODUCING A POROUS MEMBRANE OF A METAL WHICH COMPRISES MIXING POWDERED OXIDE OF THE METAL WITH A POWDERED BINDER AND A SOLVENT FOR THE BINDER TO OBTAIN A THIN LIQUID OF UNIFORM CONSISTENCY, PLACING A THIN LAYER OF THE LIQUID ON A SUPPORT, PERMITTING THE SOLVENT TO EVAPORATE TO LEAVE A LAYER OF BINDER AND METAL OXIDE ON THE SUPPORT, HEATING THE SUPPORT AND LAYER OF MATERIAL THREON TO A TEMPERATURE SUFFICIENT TO DECOMPOSE THE OXIDE BY DRIVING OUT THE OXYGEN AND BURNING OUT THE BINDER, THEREBY LEAVING A THIN LAYER OF POROUS METAL ON THE SUPPORT, AND REMOVING THE LAYER OF METAL FROM THE SUPPORT AS A POROUS METAL MEMBRANE.
References Cited (Backward Citations)
US1988861A
Cited
US2429088A
Cited
US2550345A
Cited
US2750657A
Cited
US3028656A
Cited
US3086860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |