US2500878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cataphoretic apparatus
Assignee: Individual
•
Filing: 1947-11-03
•
Granted: 1950-03-14
•
Expires: 1967-11-03
Abstract
No abstract record available.
Inventors
- 👤 Dale H Sieling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:14
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/461; C; C04; C04B; C04B33/00; C04B33/02; C04B33/04; C04B33/06; C04B33/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN APPARATUS FOR THE PRODUCTION OF SUBSTANTIALLY PURE COLLOIDAL CLAY SALTS AND CLAY ACIDS, A TANK HAVING END WALLS AND AN OUTER ARCUATE SIDE WALL PROVIDING A CATHODE; A CATHODIC DIAPHRAGM SPACED INWARDLY THEREFROM WITH THE SPACE THEREBETWEEN PROVIDING A CATHODE CHAMBER, SAID CATHODIC DIAPHRAGM BEING SUBSTANTIALLY CYLINDRICAL AND WITH ITS ENDS CARRIED BY SAID END WALLS; A SUBSTANTIALLY CYLINDRICAL ANODIC DIAPHRAGM SPACED INWARDLY OF THE CATHODIC DIAPHRAGM, WITH THE SPACE THEREBETWEEN PROVIDING AN ELECTRODIALYSIS CHAMBER, SAID ANODIC DIAPHRAGM HAVING A PAIR OF END WALLS; A HOLLOW ANODE SPACED FROM THE ANODIC DIAPHRAGM, AND CARRIED BY SAID SECONDNAMED END WALLS, WITH THE SPACE THEREBETWEEN
Claim 2
Dependent Claim
104 words
IN APPARATUS FOR THE PRODUCTION OF SUBSTANTIALLY PURE COLLOIDAL CLAY SALTS AND CLAY ACIDS, A TANK HAVING END WALLS AND AN OUTER ARCUATE SIDE WALL PROVIDING A CATHODE; A CATHODIC DIAPHRAGM SPACED INWARDLY THEREFROM WITH THE SPACE THEREBETWEEN PROVIDING A CATHODE CHAMBER, SAID CATHODIC DIAPHRAGM BEING SUBSTANTIALLY CYLINDRICAL AND WITH ITS ENDS CARRIED BY SAID END WALLS; A SUBSTANTIALLY CYLINDRICAL ANODIC DIAPHRAGM SPACED INWARDLY OF THE CATHODIC DIAPHRAGM, WITH THE SPACE THEREBETWEEN PROVIDING AN ELECTRODIALYSIS CHAMBER, SAID ANODIC DIAPHRAGM HAVING A PAIR OF END WALLS; A HOLLOW ANODE SPACED FROM THE ANODIC DIAPHRAGM, AND CARRIED BY SAID SECONDNAMED END WALLS, WITH THE SPACE THEREBETWEEN
References Cited (Backward Citations)
US1326106A
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US993888A
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US1174946A
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US1133967A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |