US3077268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialyzer
Assignee: University of Pennsylvania
•
Filing: 1959-05-06
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Granted: 1963-02-12
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Gobel Charles
- 👤 Lewis W Bluemle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:06
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/10; B01D63/101; B01D61/00; B01D61/24; B01D61/28; B01D2313/00; B01D2313/14; B01D2313/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A DIALYZER, A LONGITUDINALLY EXTENDING TUBULAR DIALYZING MEMBRANE OF OBLONG CROSS SECTION HAVING OPPOSED FLAT WALLS AND COILED INTO TURNS FORMING A SPIRAL, A PLASTIC SEPARATOR OF RECTANGULAR CROSS SECTION LONGITUDINALLY AND TRANSVERSELY COEXTENSIVE WITH THE MEMBRANE AND HAVING OPPOSED FLAT FACES EXTENDING LONGITUDINALLY BETWEEN SAID TURNS OF THE TUBULAR MEMBRANE AND BEING RADIALLY IMPERVIOUS WHEREBY SAID TURNS ARE SEPARATED, A PLURALITY OF CONES OF EQUAL HEIGHT EXTENDING OUT ON BOTH FLAT FACES OF SAID SEPARATOR AND CONTACTING AND SUPPORTING THE FLAT WALLS OF SAID MEMBRANE, SAID CONES BEING INTEGRAL WITH SAID SEPARATOR, MEANS FOR PASSING ONE FLUID THROUGH THE SPACE INSIDE THE TUBULAR MEMBRANE AND MEANS FOR PASSING ANOTHER FLUID THROUGH THE SPACE BETWEEN THE PLASTIC SEPARATOR AND THE MEMBRANE AND AROUND THE CONES WHEREIN THE FLOW MAY BE TRANSVERSE OR LONGITUDINAL, THE FLUIDS COOPERATING TO PROVIDE FOR DIALYZING ACTION.
Claim 2
Dependent Claim
142 words
IN A DIALYZER, A LONGITUDINALLY EXTENDING TUBULAR DIALYZING MEMBRANE OF OBLONG CROSS SECTION HAVING OPPOSED FLAT WALLS AND COILED INTO TURNS FORMING A SPIRAL, A PLASTIC SEPARATOR OF RECTANGULAR CROSS SECTION LONGITUDINALLY AND TRANSVERSELY COEXTENSIVE WITH THE MEMBRANE AND HAVING OPPOSED FLAT FACES EXTENDING LONGITUDINALLY BETWEEN SAID TURNS OF THE TUBULAR MEMBRANE AND BEING RADIALLY IMPERVIOUS WHEREBY SAID TURNS ARE SEPARATED, A PLURALITY OF CONES OF EQUAL HEIGHT EXTENDING OUT ON BOTH FLAT FACES OF SAID SEPARATOR AND CONTACTING AND SUPPORTING THE FLAT WALLS OF SAID MEMBRANE, SAID CONES BEING INTEGRAL WITH SAID SEPARATOR, MEANS FOR PASSING ONE FLUID THROUGH THE SPACE INSIDE THE TUBULAR MEMBRANE AND MEANS FOR PASSING ANOTHER FLUID THROUGH THE SPACE BETWEEN THE PLASTIC SEPARATOR AND THE MEMBRANE AND AROUND THE CONES WHEREIN THE FLOW MAY BE TRANSVERSE OR LONGITUDINAL, THE FLUIDS COOPERATING TO PROVIDE FOR DIALYZING ACTION.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |