US2756206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialyzer
Assignee: Individual
•
Filing: 1953-07-14
•
Granted: 1956-07-24
•
Expires: 1973-07-14
Abstract
No abstract record available.
Inventors
- 👤 Gobel Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:27
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/10; B01D63/101; B01D2313/00; B01D2313/14; B01D2313/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A DIALYZER INCLUDING A FORM, A MEMBRANE EXTENDING IN SPIRAL CONFIGURATION THROUGH A PASSAGE, CONNECTIONS AT THE RESPECTIVE ENDS TO THE INTERIOR OF THE MEMBRANE AND TO THE PASSAGE, IN COMBINATION WITH AN ELASTOMER SEPARATOR STRIP WRAPPED SPIRALLY AROUND THE FORM, SUCCESSIVE TURNS OF THE SEPARATOR STRIP LAPPING ON PRECEDING TURNS, THE SEPARATOR STRIP OF SIDES HAVING SEALS WHICH ENGAGE AND CLOSE THE EDGE SPACE BETWEEN ONE SEPARATOR STRIP TURN AND THE NEXT SEPARATOR STRIP TURN, AND THE SEPARATOR STRIP BETWEEN THE EDGES DEFINING THE WALLS OF THE PASSAGE THROUGH WHICH THE MEMBRANE EXTENDS.
Claim 2
Dependent Claim
94 words
A DIALYZER INCLUDING A FORM, A MEMBRANE EXTENDING IN SPIRAL CONFIGURATION THROUGH A PASSAGE, CONNECTIONS AT THE RESPECTIVE ENDS TO THE INTERIOR OF THE MEMBRANE AND TO THE PASSAGE, IN COMBINATION WITH AN ELASTOMER SEPARATOR STRIP WRAPPED SPIRALLY AROUND THE FORM, SUCCESSIVE TURNS OF THE SEPARATOR STRIP LAPPING ON PRECEDING TURNS, THE SEPARATOR STRIP OF SIDES HAVING SEALS WHICH ENGAGE AND CLOSE THE EDGE SPACE BETWEEN ONE SEPARATOR STRIP TURN AND THE NEXT SEPARATOR STRIP TURN, AND THE SEPARATOR STRIP BETWEEN THE EDGES DEFINING THE WALLS OF THE PASSAGE THROUGH WHICH THE MEMBRANE EXTENDS.
References Cited (Backward Citations)
GB489654A
Cited
US2650709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |