Patent EP0098534A1 successfully refreshed from Google Patents.
EP0098534A1
Expired / Lapsed
EP
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Filter apparatus
Assignee: EMD Millipore Corp
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Filing: 1983-06-30
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Granted: —
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Expires: 2003-06-30
Abstract
Abstract A multiwell filtration apparatus for the assay of microliter quantities is provided which prevents fluid loss by capillary action and gravity flow through a microporous membrane or ultrafilter. The filtration apparatus is particularly advantageous in assays requiring maintenance of fluid within the reaction wells for substantial time periods and in small sample volume assays in the range of 100 microliter volumes.
Inventors
- 👤 Helena Margaret Champion
- 👤 Joseph John Pierog
- 👤 Joseph Edward Peters
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 20:06
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/14; B01D61/18; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5025; B01L3/50255; G; G01; G01N; G01N33/00; G01N33/48
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
52 words
A filtration apparatus comprising: a plate having at least one aperture open at each end; filtration means disposed over one end of said aperture in said plate such that a well having a discrete filtering area is formed; and a hydrophobic fabric attached to said filtration means adjacent to said filtering area.
Claim 2
Dependent Claim
52 words
A filtration apparatus comprising: a plate having at least one aperture open at each end; filtration means disposed over one end of said aperture in said plate such that a well having a discrete filtering area is formed; and a hydrophobic fabric attached to said filtration means adjacent to said filtering area.
Claim 3
Dependent Claim
61 words
A filtration apparatus comprising: a plate having at least one aperture open at each end; filtration means disposed over across one end of said aperture in said plate such that a well having a discrete filtering area is formed; and a projection aligned beneath said filtration means such that fluid passing through said filtering area is directed to a predetermined location.
Claim 4
Dependent Claim
61 words
A filtration apparatus comprising: a plate having at least one aperture open at each end; filtration means disposed over across one end of said aperture in said plate such that a well having a discrete filtering area is formed; and a projection aligned beneath said filtration means such that fluid passing through said filtering area is directed to a predetermined location.
Claim 5
Dependent Claim
70 words
A filtration apparatus comprising: a plate having at least one aperture open at each end; filtration means disposed over one end of said aperture such that a well having a discrete filtering area is formed; a hydrophobic fabric attached to said filtration means adjacent to said filtering area; and a projection aligned beneath said filtration means such that fluid passing through said filtering area is directed to a predetermined location.
Claim 6
Dependent Claim
70 words
A filtration apparatus comprising: a plate having at least one aperture open at each end; filtration means disposed over one end of said aperture such that a well having a discrete filtering area is formed; a hydrophobic fabric attached to said filtration means adjacent to said filtering area; and a projection aligned beneath said filtration means such that fluid passing through said filtering area is directed to a predetermined location.
Claim 7
Dependent Claim
19 words
The filtration apparatus as recited in claim 1, 2 or 3 wherein said filtration means includes a microporous membrane.
Claim 8
Dependent Claim
24 words
The filtration apparatus as recited in claim 4 wherein said filtration means includes a microporous membrane having a porosity of at least 25 manometers.
Claim 9
Dependent Claim
18 words
The filter apparatus as recited in claim 1, 2 or 3 wherein said filtration means includes ultrafiltration media.
Claim 10
Dependent Claim
25 words
The filtration apparatus as recited in claim 1 or 3 wherein said hydrophobic fabric is selected from the group consisting of woven or nonwoven polymers.
Claim 11
Dependent Claim
25 words
The filter apparatus as recited in claim 1 or 3 wherein said hydrophobic fabric is selected from the group consisting of polyesters, polyolefins and polytetrafluoroethylene.
Claim 12
Dependent Claim
17 words
The filter apparatus as recited in claim 1 or 3 wherein said hydrophobic fabric is heat bondable.
Claim 13
Dependent Claim
19 words
lo. The filter apparatus as recited in claim 1 or 3 wherein said hydrophobic fabric is attached with adhesive.
Claim 14
Dependent Claim
21 words
The filtration apparatus as recited in claim 1, 2 or 3 further comprising fluid collections means disposed beneath said filtration means.
Claim 15
Dependent Claim
20 words
The filtration apparatus as recited in claim 11 wherein said fluid collection means includes a plurality of individual receiving chambers.
Claim 16
Dependent Claim
19 words
The filtration apparatus. as recited in claim 2 or 3 wherein said projection is disposed upon fluid collection means.
References Cited (Backward Citations)
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