US2741595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of cells for electrodialysis
Assignee: Veolia WTS Systems USA Inc
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Filing: 1952-04-24
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Granted: 1956-04-10
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Expires: 1972-04-24
Abstract
No abstract record available.
Inventors
- 👤 Juda Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:38
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/463; B01D63/00; B01D63/10; B01D63/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
ELECTRODIALYSIS APPARATUS COMPRISING SUCCESSIVE TURNS OF AT LEAST ONE SELECTIVELY PERMEABLE ION-EXCHANGE MEMBRANE SPIRALLY WOUND WITH SPACED OVERLYING TURNS, THUS DEFINING AT LEAST ONE SERIES OF CELL SOLUTION PASSAGEWAYS, A SINGLE PAIR OF ELECTRODES ONE OF WHICH IS AT THE CENTER OF THE SPIRALLY WOUND MEMBRANE AND THE OTHER AT THE OUTSIDE SURROUNDING WOUND MEMBRANE, AND MEANS FOR
Claim 2
Dependent Claim
58 words
ELECTRODIALYSIS APPARATUS COMPRISING SUCCESSIVE TURNS OF AT LEAST ONE SELECTIVELY PERMEABLE ION-EXCHANGE MEMBRANE SPIRALLY WOUND WITH SPACED OVERLYING TURNS, THUS DEFINING AT LEAST ONE SERIES OF CELL SOLUTION PASSAGEWAYS, A SINGLE PAIR OF ELECTRODES ONE OF WHICH IS AT THE CENTER OF THE SPIRALLY WOUND MEMBRANE AND THE OTHER AT THE OUTSIDE SURROUNDING WOUND MEMBRANE, AND MEANS FOR
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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |