US5096582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tangential flow filtration apparatus
Assignee: EMD Millipore Corp
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Filing: 1990-09-25
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Granted: 1992-03-17
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Expires: 2010-09-25
Abstract
Abstract A tangential flow filtration apparatus which utilizes a single manifold to introduce liquid to be filtered into the apparatus and to remove a filtrate stream and a retentate stream from the apparatus is provided. A plurality of filtration members are stacked in a vertical arrangement between the manifold and a plate. Holes and sealing means are provided within the filtration member to effect vertical flow of the filtrate, retentate and incoming liquid through the stack while preventing admixture of the filtrate with the retentate or the incoming liquid.
Inventors
- 👤 Andrew A. Lombardi
- 👤 James H. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:52
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/08; B01D63/082; B01D63/084
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
183 words
A manifold for introducing a liquid feed stream into a filtration member and for removing a filtrate stream and a retentate stream from a filtration member which comprises a plate having an inlet for a liquid feed in fluid communication with a plurality of liquid inlet ports in said plate, said liquid inlet ports being in fluid communication with said filtration member, a retentate outlet from said plate in fluid communication with a plurality of retentate outlet ports in said plate, said retentate outlet ports being in fluid communication with said filtration member, said retentate outlet ports being positioned at a first end of said plate opposite a second end of said plate wherein said feed inlet ports are positioned, a filtrate outlet from said plate in fluid communication with a plurality of filtrate outlet ports in said plate, said filtrate outlet ports being in fluid communication with paths in said plate and being in fluid communication only with filtrate in said filtration member, and said filtrate outlet ports being positioned at said first end and at said second end of said plate.
Claim 2
Dependent Claim
183 words
A manifold for introducing a liquid feed stream into a filtration member and for removing a filtrate stream and a retentate stream from a filtration member which comprises a plate having an inlet for a liquid feed in fluid communication with a plurality of liquid inlet ports in said plate, said liquid inlet ports being in fluid communication with said filtration member, a retentate outlet from said plate in fluid communication with a plurality of retentate outlet ports in said plate, said retentate outlet ports being in fluid communication with said filtration member, said retentate outlet ports being positioned at a first end of said plate opposite a second end of said plate wherein said feed inlet ports are positioned, a filtrate outlet from said plate in fluid communication with a plurality of filtrate outlet ports in said plate, said filtrate outlet ports being in fluid communication with paths in said plate and being in fluid communication only with filtrate in said filtration member, and said filtrate outlet ports being positioned at said first end and at said second end of said plate.
Claim 3
Dependent Claim
226 words
Apparatus for effecting filtration of a liquid feed stream to produce a retentate stream and a filtrate stream which comprises, a) at least one filtration member including means for separating a liquid feed into a retentate stream and a filtrate stream and b) a manifold for introducing a liquid feed stream into said filtration member and for removing a filtrate stream and a retentate stream from said filtration member which comprises a plate having an inlet for a liquid feed in fluid communication with a plurality of liquid inlet ports in said plate, said liquid inlet ports being in fluid communication with said filtration member, a retentate outlet from said plate in fluid communication with a plurality of retentate outlet ports in said plate, said retentate outlet ports being in fluid communication with said filtration member, said retentate outlet ports being positioned at a first end of said plate opposite a second end of said plate wherein said feed inlet ports are positioned, a filtrate outlet from said plate in fluid communication with a plurality of filtrate outlet ports in said plate, said filtrate outlet ports being in fluid communication with paths in said plate and being in fluid communication only with filtrate in said filtration member, and said filtrate outlet ports being positioned at said first end and at said second end of said plate.
Claim 4
Dependent Claim
226 words
Apparatus for effecting filtration of a liquid feed stream to produce a retentate stream and a filtrate stream which comprises, a) at least one filtration member including means for separating a liquid feed into a retentate stream and a filtrate stream and b) a manifold for introducing a liquid feed stream into said filtration member and for removing a filtrate stream and a retentate stream from said filtration member which comprises a plate having an inlet for a liquid feed in fluid communication with a plurality of liquid inlet ports in said plate, said liquid inlet ports being in fluid communication with said filtration member, a retentate outlet from said plate in fluid communication with a plurality of retentate outlet ports in said plate, said retentate outlet ports being in fluid communication with said filtration member, said retentate outlet ports being positioned at a first end of said plate opposite a second end of said plate wherein said feed inlet ports are positioned, a filtrate outlet from said plate in fluid communication with a plurality of filtrate outlet ports in said plate, said filtrate outlet ports being in fluid communication with paths in said plate and being in fluid communication only with filtrate in said filtration member, and said filtrate outlet ports being positioned at said first end and at said second end of said plate.
Claim 5
Dependent Claim
17 words
The apparatus of claim 2 wherein said filtration member includes a filter layer comprising a microporous membrane.
Claim 6
Dependent Claim
17 words
The apparatus of claim 2 wherein said filtration member includes a filter layer comprising an ultrafiltration membrane.
References Cited (Backward Citations)
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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) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |