US5141718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test plate apparatus
Assignee: EMD Millipore Corp
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Filing: 1990-10-30
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Granted: 1992-08-25
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Expires: 2010-10-30
Abstract
Abstract A test plate apparatus is provided having at least one set of wells comprising two essentially parallel rows of wells and a central area between the wells. Each well has a first volume for housing means for effecting a fluid interaction process such as for cell growth and a second volume which permits addition or removal of liquid from the wells without disturbing the fluid interaction process.
Inventors
- 👤 Phillip Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:39
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5025; B01L3/50255; B01L3/508; B01L3/5085; C; C12; C12M; C12M23/00; C12M23/02; C12M23/12; B01L2200/00; B01L2200/02; B01L2200/026; B01L2300/00; B01L2300/08; B01L2300/0809; B01L2300/0829; B01L3/50855
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
A test plate having at least one set of wells, each of said set of well comprising two essentially parallel rows of wells, each of said wells comprising a first volume containing a separate enclosure having a membrane means for effecting a fluid interaction process and means for maintaining said separate enclosure within the first volume, and a second volume having a dimension smaller than an outside dimension of said separate enclosure to prevent said separate enclosure from entering said second volume, said second volume having a shape which permits introduction of means for adding or removing liquid from said second volume.
Claim 2
Dependent Claim
102 words
A test plate having at least one set of wells, each of said set of well comprising two essentially parallel rows of wells, each of said wells comprising a first volume containing a separate enclosure having a membrane means for effecting a fluid interaction process and means for maintaining said separate enclosure within the first volume, and a second volume having a dimension smaller than an outside dimension of said separate enclosure to prevent said separate enclosure from entering said second volume, said second volume having a shape which permits introduction of means for adding or removing liquid from said second volume.
Claim 3
Dependent Claim
28 words
The test plate of claim 1 wherein said wells have a tear drop comprising a circular portion cross section for said second volume formed from two converging legs.
Claim 4
Dependent Claim
57 words
The test plate of claim 2 wherein a first well from a first row in each set has a first leg positioned essentially parallel to a second leg of a second well in a second row along substantially the entire length of said first leg and said second leg within a central area between said parallel rows.
Claim 5
Dependent Claim
32 words
The test plate of claim 1 wherein said wells are L-shaped having a base section and a leg section wherein said leg sections extend into a central area between said parallel rows.
Claim 6
Dependent Claim
29 words
The test plate of claim 1 including an extension means extending from a wall of each of said wells to prevent said housing means from entering said second volume.
Claim 7
Dependent Claim
29 words
The test plate of claim 1 including a ion means extending from a floor of each of said wells to prevent said housing means from entering said second volume.
Claim 8
Dependent Claim
46 words
The test plate of any one of claims 1, 2, 3 or 4, wherein said separate enclosure comprises a hollow tubular member positioned within each well of said test plate, said tubular member having an open end and a closed end covered by the membrane means.
Claim 9
Dependent Claim
63 words
The test plate of any one of claims 1, 2, 3 or 4, wherein said separate enclosure comprises a plurality of hollow tubular members each positioned within a well of said test plate, said tubular members within a row of said test plate being molded integrally, each of said tubular members having an open end and closed end covered by the membrane means.
Claim 10
Dependent Claim
91 words
The test plate of any one of claim 1, 2, 3 or 4, wherein said separate enclosure comprises a plurality of hollow tubular members each positioned within a well of said test plate, a set of tubular members being formed integrally for positioning within adjacent wells of the adjacent rows of wells, each of said tubular members having an open end and a closed end covered by the membrane means said means for maintaining said tubular members within the first volumes of said wells being positioned in adjacent rows of wells.
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) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |