US2929005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator means for electrolytic devices
Assignee: RALPH F BURKARD
•
Filing: 1955-08-24
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Granted: 1960-03-15
•
Expires: 1975-08-24
Abstract
No abstract record available.
Inventors
- 👤 Lilienfeld Julius Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:07
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A HIGHLY POROUS SEPARATOR FOR USE WITH ELECTRODES OF ELECTROLYTIC DEVICES CONTAINING LIQUID ELECTROLYTES CONSISTING ESSENTIALLY OF A FORAMINOUS MAT OF GLASS FIBERS HAVING A POROUS INTEGRATING COATING FORMED OF DISCRETE PARTICLES OF A DISPERSOID PERMITTING FREE ACCESS OF THE ELECTROLYTE TO THE ELECTRODE, SAID DISPERSOID HAVING A WET TABILITY BY THE ELECTROLYTE LOWER THAN THAT OF THE ELECTRODE.
Claim 2
Dependent Claim
59 words
A HIGHLY POROUS SEPARATOR FOR USE WITH ELECTRODES OF ELECTROLYTIC DEVICES CONTAINING LIQUID ELECTROLYTES CONSISTING ESSENTIALLY OF A FORAMINOUS MAT OF GLASS FIBERS HAVING A POROUS INTEGRATING COATING FORMED OF DISCRETE PARTICLES OF A DISPERSOID PERMITTING FREE ACCESS OF THE ELECTROLYTE TO THE ELECTRODE, SAID DISPERSOID HAVING A WET TABILITY BY THE ELECTROLYTE LOWER THAN THAT OF THE ELECTRODE.
References Cited (Backward Citations)
US2199519A
Cited
US2310932A
Cited
US2593922A
Cited
US2551869A
Cited
US2647079A
Cited
US2759132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |