US3223612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid treatment
Assignee: AMF Inc
•
Filing: 1959-10-02
•
Granted: 1965-12-14
•
Expires: 1979-10-02
Abstract
No abstract record available.
Inventors
- 👤 Chen William Kwo-Wei
- 👤 Mintz Milton Sheldon
- 👤 Smith Richard Neilsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:13
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/50; B01D61/24; B01D61/28; B01D63/00; B01D63/08; B01D63/082; B01D63/0822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A DIALYSIS DEVICE COMPRISING, IN COMBINATION, LAYERS OF GASKETS, EACH GASKET HAVING AT LEAST TWO FLUID FLOW APERTURES PASSING THROUGH IT, A CUT OUT PORION IN EACH GASKET FORMING A CELL FRAME, MEMBRANES FREE FROM FLUID FLOW APERTURES INTERSPERSED BETWEEN SAID GASKETS, AND MANIFOLD SPACERS ASSOCIATED WITH SAID GASKETS WITH SAID MANIFOLD SPACERS CONTAINING FLUID FLOW APERTURES ALIGNED WITH THE FLUID FLOW APERTURES IN SAID GASKETS TO FORM MANIFOLD PAS-
Claim 2
Dependent Claim
70 words
A DIALYSIS DEVICE COMPRISING, IN COMBINATION, LAYERS OF GASKETS, EACH GASKET HAVING AT LEAST TWO FLUID FLOW APERTURES PASSING THROUGH IT, A CUT OUT PORION IN EACH GASKET FORMING A CELL FRAME, MEMBRANES FREE FROM FLUID FLOW APERTURES INTERSPERSED BETWEEN SAID GASKETS, AND MANIFOLD SPACERS ASSOCIATED WITH SAID GASKETS WITH SAID MANIFOLD SPACERS CONTAINING FLUID FLOW APERTURES ALIGNED WITH THE FLUID FLOW APERTURES IN SAID GASKETS TO FORM MANIFOLD PAS-
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |