USRE27510E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial kidney
Assignee: —
•
Filing: 1971-11-01
•
Granted: 1972-10-24
•
Expires: 1991-11-01
Abstract
Abstract A DIALYSIS TUBE FOR BLOOD IS COILED TO FORM MEMBRANEOUS LAYERS SUPPORTED BY A MEMBER HAVING FIRST AND SECOND STRANDS ARRANGED AT ANGLES AND PROJECTING THEIR LENGTH AWAY FROM EACH OTHER FOR FORMING FLOW CHANNELS FOR BLOOD AND DIALYZING FLUID.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:12
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/10; B01D63/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |