US3219573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple chamber electrodialysis apparatus
Assignee: AMF Inc
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Filing: 1963-05-01
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Granted: 1965-11-23
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Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Chen William Kwo-Wei
- 👤 Mintz Milton Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:15
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/50; Y; Y10; Y10S; Y10S159/00; Y10S159/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN ELECTRODIALYSIS DEVICE, OPEN FRAMES STACKED UPON EACH OTHER, MEMBRANES DISPERSED BETWEEN SAID FRAMES FORMING ELECTRODIALYSIS CELLS WITHIN THE OPENINGS OF SAID STACKED FRAMES, AND MANIFOLD BUTTONS EACH HAVING A THICKNESS WHICH IS AN INTEGER MULTIPLE OF THE THICKNESS OF A FRAME AND CONTAINING A MANIFOLD APERTURE, SAID MANIFOLD BUTTONS EACH CONTAINING AT LEAST ONE INTERNAL PASSAGE BETWEEN THE APERTURE AND AN EDGE OF THE BUTTON IN COMMUNICATION WITH AN ELECTRODIALYSIS CELL, SAID MANIFOLD BUTTONS BEING DISPOSED IN AT LEAST TWO APERTURE ALIGNED STACKS WITH MANIFOLD BUTTONS OF CONSECUTIVE ELECTRODIALYSIS CELL BEING DISPOSED IN ALTERNATE BUTTON STACKS, SAID FRAMES BEING PROVIDED WITH INNER PROJECTIONS AND SAID BUTTONS BEING FIXED TO SAID PROJECTIONS.
Claim 2
Dependent Claim
113 words
IN AN ELECTRODIALYSIS DEVICE, OPEN FRAMES STACKED UPON EACH OTHER, MEMBRANES DISPERSED BETWEEN SAID FRAMES FORMING ELECTRODIALYSIS CELLS WITHIN THE OPENINGS OF SAID STACKED FRAMES, AND MANIFOLD BUTTONS EACH HAVING A THICKNESS WHICH IS AN INTEGER MULTIPLE OF THE THICKNESS OF A FRAME AND CONTAINING A MANIFOLD APERTURE, SAID MANIFOLD BUTTONS EACH CONTAINING AT LEAST ONE INTERNAL PASSAGE BETWEEN THE APERTURE AND AN EDGE OF THE BUTTON IN COMMUNICATION WITH AN ELECTRODIALYSIS CELL, SAID MANIFOLD BUTTONS BEING DISPOSED IN AT LEAST TWO APERTURE ALIGNED STACKS WITH MANIFOLD BUTTONS OF CONSECUTIVE ELECTRODIALYSIS CELL BEING DISPOSED IN ALTERNATE BUTTON STACKS, SAID FRAMES BEING PROVIDED WITH INNER PROJECTIONS AND SAID BUTTONS BEING FIXED TO SAID PROJECTIONS.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |