US2980532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing permeable membranes
Assignee: Studsvik Energiteknik AB
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Filing: 1959-01-12
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Granted: 1961-04-18
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 Martensson Karl Marten
- 👤 Lofman Claes Peter
- 👤 Eriksson Erik Ingemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:03
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0039; B01D67/0072; B01D59/00; B01D59/10; B01D59/12; B01D59/14; B01D67/0041; B01D67/00411; B01D71/00; B01D71/02; B01D71/024; B01D71/025; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1103; B22F3/1118; B22F7/00; B22F7/002; B22F9/00; B22F9/02; B22F9/14; B01D2323/00; B01D2323/35; B22F2999/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12028; Y10T428/12063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A METHOD OF PRODUCING A PERMEABLE MEMBRANE WHICH COMPRISES VAPORIZING A METALLIC ELECTRODE IN A GAS ATMOSPHERE BY MEANS OF AN ELECTRIC ARC, COLLECTING FINELY DIVIDED MATERIAL FROM SAID ATMOSPHERE DIRECTLY ON A METALLIC NETWORK, COMPRESSING SAID COLLECTED MATERIAL TOGETHER WITH THE NETWORK TO FORM A COMPRESSED UNIT AND SINTERING THE RESULTING COMPRESSED UNIT.
Claim 2
Independent Claim
54 words
A METHOD OF PRODUCING A PERMEABLE MEMBRANE WHICH COMPRISES VAPORIZING A METALLIC ELECTRODE IN A GAS ATMOSPHERE BY MEANS OF AN ELECTRIC ARC, COLLECTING FINELY DIVIDED MATERIAL FROM SAID ATMOSPHERE DIRECTLY ON A METALLIC NETWORK, COMPRESSING SAID COLLECTED MATERIAL TOGETHER WITH THE NETWORK TO FORM A COMPRESSED UNIT AND SINTERING THE RESULTING COMPRESSED UNIT.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |