US5342581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preventing cross-contamination of multi-well test plates
Assignee: ASHOK R SANADI AND CLYDE SANADI PTRS
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Filing: 1993-04-19
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Granted: 1994-08-30
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Expires: 2013-04-19
Abstract
Abstract A multi-well plate which prevents cross-contamination of specimens through the use of a resilient gasket which covers a majority of the top of the plate and is compressed by a lid. It thus provides a sealing assembly for arrays of containers of any size or shape. A multi-well plate of modular construction is also disclosed in which resilient gaskets prevent cross-contamination of samples. The gaskets may be unitary sheets with or without an array of openings corresponding to the well openings or may consist of discrete single-lell gaskets. A multi-well plate in which the wells have conical ends is also provided.
Inventors
- 👤 Ashok R. Sanadi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:52
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5085; B01L3/50853; B01L3/502; B01L3/5025; B01L3/50255; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
An assembly for simultaneously confining multiple samples in separate chambers, comprising: a plate defining a plurality of containment wells, each well having an opening at a principal surface of said plate; a resilient gasket disposed on and extending over the majority of said principal surface of said plate and closing said openings of said wells; and a lid disposed on said resilient gasket having means for compressing said resilient gasket on said principal surface of said plate to hermetically seal said wells and to prevent said samples from flowing from one well to another between said lid and said principal surface of said plate.
Claim 2
Dependent Claim
104 words
An assembly for simultaneously confining multiple samples in separate chambers, comprising: a plate defining a plurality of containment wells, each well having an opening at a principal surface of said plate; a resilient gasket disposed on and extending over the majority of said principal surface of said plate and closing said openings of said wells; and a lid disposed on said resilient gasket having means for compressing said resilient gasket on said principal surface of said plate to hermetically seal said wells and to prevent said samples from flowing from one well to another between said lid and said principal surface of said plate.
Claim 3
Dependent Claim
26 words
The invention recited in claim 1, wherein said plate is a tray containing a plurality of tubes, each of said tubes defining one of said wells.
Claim 4
Dependent Claim
19 words
The invention recited in claim 1, further comprising a clamp which clamps said plate, resilient gasket, and lid together.
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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) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |