US3511906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a pressure-resistant,edge-sealing mounting for porous discs
Assignee: VARTA AG
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Filing: 1965-09-10
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Granted: 1970-05-12
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Expires: 1985-09-10
Abstract
Abstract 1,088,947. Electrode. VARTA A.G. Aug. 3, 1965 [Sept. 19, 1964], No. 33161/65. Heading H1B. A gas-diffusion electrode is made by filling the space between a porous plate and a peripheral plate holder with a hardenable sealing compound. The pores of the plate are impregnated with a liquid compatible with the sealing compound before the latter is introduced under pressure. The plate may be of metal and have dual porosity.
Inventors
- 👤 Joachim Bergemann
- 👤 Walter Knoess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D39/00; B01D39/14; B01D39/20; B01D39/2027; H; H01; H01M; H01M8/00; H01M8/02; H01M8/0271; H01M8/0273; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 0
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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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |