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公开(公告)号：GB2246081A
公开(公告)日：1992-01-22
申请号：GB9115091
申请日：1991-07-12
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum comprises an upper plate 11 with apertures 12 forming sample wells, a membrane sheet 13 forming the floor of each well, a collection plate 19 with individual wells 20 underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate 15 between the membrane sheet and the collection plate to guide small quantities of filtrate downward from the membrane into the collection wells. Guide plate 15 comprises individual tubes 41, less than 2.5 mms in diameter, which project into wells 20, and raised lands which clamp the membrane sheet against the underside of upper plate 11 around each aperture 12. Plate 16 enables plate 15 to be clamped to plate 11 by screws 26, forming an assembly which may be latched to lower support plate 21. Plate 21 supports collection plate 19 while defining a space, above and below plate 19, to which vacuum is applied.
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公开(公告)号：ITRM910512D0
公开(公告)日：1991-07-11
申请号：ITRM910512
申请日：1991-07-11
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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公开(公告)号：DE4123874C2
公开(公告)日：1996-09-19
申请号：DE4123874
申请日：1991-07-18
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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公开(公告)号：GB2246081B
公开(公告)日：1994-11-16
申请号：GB9115091
申请日：1991-07-12
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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Patent Agency Ranking
公开(公告)号：FR2664825B1
公开(公告)日：1994-08-19
申请号：FR9108597
申请日：1991-07-09
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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公开(公告)号：IT1250493B
公开(公告)日：1995-04-08
申请号：ITRM910512
申请日：1991-07-11
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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公开(公告)号：CA2043633C
公开(公告)日：1993-12-21
申请号：CA2043633
申请日：1991-05-31
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: MULTI-SAMPLE FILTRATION PLATE ASSEMBLY A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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公开(公告)号：DE4123874A1
公开(公告)日：1992-01-23
申请号：DE4123874
申请日：1991-07-18
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , PENALUNA WILLIAM A , GEISSELSODER JANET
Abstract: A plate assembly for performing multiple filtrations with the use of a vacuum offers advantages for small samples due to the construction of its component plates, which include an upper plate with apertures forming sample wells, a membrane sheet forming the floor of each well, a collection plate with individual wells underneath the membrane sheet, aligned with the upper plate apertures, and a drop guide plate between the membrane sheet and the collection plate to guide and force small quantities of liquid downward from the membrane into the collection wells. The arrangement permits extremely small quantities of species on the membrane to be drawn into the collection wells without dilution, and avoids cross contamination between collection wells.
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公开(公告)号：ITRM910512A1
公开(公告)日：1992-01-19
申请号：ITRM910512
申请日：1991-07-11
Applicant: BIO RAD LABORATORIES
Inventor： FERNWOOD GEORGE G , GEISSELSODER JANET , PENALUNA WILLIAM A
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