Patent US3567031A successfully refreshed from Google Patents.
US3567031A
Expired / Lapsed
US
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Autoagitating ultrafiltration apparatus
Assignee: Amicon Corp
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Filing: 1969-05-29
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Granted: 1971-03-02
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Expires: 1989-05-29
Abstract
Abstract Ultrafiltration apparatus of the thin-channel type comprising a flow-directing means and a reservoir for fluid. The flowdirecting means is advantageously in a spiral form so that it may impart a mixing action to fluid passed therefrom into the reservoir.
Inventors
- 👤 Herbert H Loeffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:46
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/08; B01D63/087; A; A61; A61M; A61M1/00; A61M1/34; B01D61/00; B01D61/14; B01D61/18; F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
Ultrafiltration apparatus comprising a reservoir assembly, a flow-directing means integral with said reservoir assembly, an ultrafiltration membrane which bears against said flow directing means forming a flow path therewith, said flow path forming a conduit between said reservoir and a port into said apparatus, and means to drive liquid from said reservoir through said flow path.
Claim 2
Dependent Claim
56 words
Ultrafiltration apparatus comprising a reservoir assembly, a flow-directing means integral with said reservoir assembly, an ultrafiltration membrane which bears against said flow directing means forming a flow path therewith, said flow path forming a conduit between said reservoir and a port into said apparatus, and means to drive liquid from said reservoir through said flow path.
Claim 3
Dependent Claim
50 words
A reservoir assembly suitable for use in ultrafiltration apparatus and comprising a flow-directing means integral with said reservoir assembly, said flow-directing means being suitable for use, when brought to bear against an ultrafiltration membrane, to form with said membrane a conduit between said reservoir and a port into said assembly.
Claim 4
Dependent Claim
50 words
A reservoir assembly suitable for use in ultrafiltration apparatus and comprising a flow-directing means integral with said reservoir assembly, said flow-directing means being suitable for use, when brought to bear against an ultrafiltration membrane, to form with said membrane a conduit between said reservoir and a port into said assembly.
Claim 5
Dependent Claim
14 words
Apparatus as defined in claim 1 wherein the membrane is an anisotropic ultrafiltration membrane.
Claim 6
Dependent Claim
14 words
Apparatus as defined in claim 1 wherein the membrane is a reverse osmosis membrane.
Claim 7
Dependent Claim
15 words
Apparatus as defined in claim 1 wherein the membrane is an isotropic depth-type filter membrane.
Claim 8
Dependent Claim
29 words
Apparatus as defined in claim 1 wherein said means to drive liquid from said reservoir through said flow path is a peristaltic pump means mounted external to the reservoir.
Claim 9
Dependent Claim
20 words
Apparatus as defined in claim 1 wherein the flow path between said reservoir and said port is a spiral path.
Claim 10
Dependent Claim
27 words
Apparatus as defined in claim 7 wherein said spiral flow path extends between a point proximate the center of said reservoir and said port into said apparatus.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |