US5518612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell strainer assembly and method of use
Assignee: Corning Inc
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Filing: 1994-08-30
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Granted: 1996-05-21
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Expires: 2014-08-30
Abstract
Abstract A cell strainer assembly useful for filtering and collecting suspensions for use in immunological studies and more particularly in flow cytometry procedures. The assembly comprises a container and a cap with means for filtering and collecting a suspension and with means for removably securing the cap and the container.
Inventors
- 👤 John J. Kayal
- 👤 Seiji Fukushima
- 👤 Thomas Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4077; B; B01; B01D; B01D35/00; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; B01L3/50825; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/491
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
An assembly for filtering and collecting suspensions comprising: a container defining a tubular chamber comprising a sidewall extending from an annular open top portion to a closed bottom portion, said sidewall comprising an inner surface and an outer surface and an annular sealing ring located on said outer surface of said top portion; and a closure comprising a top portion, a bottom portion, an annular skirt extending from said top portion to said bottom portion and having an inner surface and outer surface, an inner inverted skirt portion surrounded by said inner surface of said annular skirt and extending from said top portion toward said bottom portion, an annular space between said inner surface of said annular skirt and said inverted skirt portion, an orifice in said bottom portion of said inverted skirt; means for filtering a suspension covering said orifice; and protrusions on said inner surface of said annular skirt and said inverted skirt portion.
Claim 2
Dependent Claim
156 words
An assembly for filtering and collecting suspensions comprising: a container defining a tubular chamber comprising a sidewall extending from an annular open top portion to a closed bottom portion, said sidewall comprising an inner surface and an outer surface and an annular sealing ring located on said outer surface of said top portion; and a closure comprising a top portion, a bottom portion, an annular skirt extending from said top portion to said bottom portion and having an inner surface and outer surface, an inner inverted skirt portion surrounded by said inner surface of said annular skirt and extending from said top portion toward said bottom portion, an annular space between said inner surface of said annular skirt and said inverted skirt portion, an orifice in said bottom portion of said inverted skirt; means for filtering a suspension covering said orifice; and protrusions on said inner surface of said annular skirt and said inverted skirt portion.
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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) | 1999-05-21 | 1999-11-20 | 2000-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-21 | 2003-11-20 | 2004-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-21 | 2007-11-20 | 2008-05-21 | $7700.00 | Window Closed / Lapsed |