US2758083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicell electrodialysis apparatus
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
•
Filing: 1953-09-17
•
Granted: 1956-08-07
•
Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Cornelis Van Hoek
- 👤 Wiechers Sybrandus Gerhardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:50
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/10; C08G12/12; B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/50; C03; C03B; C03B33/00; C03B33/06; B01D2313/00; B01D2313/04; B01D2313/041; B01D2313/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A MULTICELL ELECRODIALYSIS APPARATUS COMPRISING A PLURALITY OF LIQUID SPACES CONSTITUTING ALTERNATIVELY DILUTING CELLS AND CONCENTRATING CELLS, THE DILUTING CELLS BEING SEPARATED FROM THE CONCENTRATING CELLS BY PARALLEL MEMBRANES, THE MEMBRANES HAVING AT LEAST THREE APERTURES CONSTITUTING AT LEAST THREE ROWS OF APERTURES ALIGNED PERPENDICULAR TO THE MEMBRANE SURFACES, AT LEAST TWO OF THE ROWS OF APERTURES IN ALIGNMENT FORMING EACH A COMMON LIQUID PASSAGE FOR ALTERNATE CELLS BY JOINING TOGETHER IN SUBSTANTIAL CONTACT THE BORDERS OF EACH ADJACENT PAIR OF SAID APERTURES.
Claim 2
Dependent Claim
83 words
A MULTICELL ELECRODIALYSIS APPARATUS COMPRISING A PLURALITY OF LIQUID SPACES CONSTITUTING ALTERNATIVELY DILUTING CELLS AND CONCENTRATING CELLS, THE DILUTING CELLS BEING SEPARATED FROM THE CONCENTRATING CELLS BY PARALLEL MEMBRANES, THE MEMBRANES HAVING AT LEAST THREE APERTURES CONSTITUTING AT LEAST THREE ROWS OF APERTURES ALIGNED PERPENDICULAR TO THE MEMBRANE SURFACES, AT LEAST TWO OF THE ROWS OF APERTURES IN ALIGNMENT FORMING EACH A COMMON LIQUID PASSAGE FOR ALTERNATE CELLS BY JOINING TOGETHER IN SUBSTANTIAL CONTACT THE BORDERS OF EACH ADJACENT PAIR OF SAID APERTURES.
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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |