Julia J Krueger

US Patent:

6660232, Dec 9, 2003

Filed:

Sep 29, 2000

Appl. No.:

09/676184

Inventors:

Steven T. Krueger - Deerfield WI
Paul E. Otto - Madison WI
Julia E. Krueger - Deerfield WI

Assignee:

Promega Corporation - Madison WI

International Classification:

B01L 300

US Classification:

422102, 422 99, 422104, 4352831

Abstract:

A multi-well plate and plate holder assembly comprising a multi-well assay plate clamped between an upper plate holder and a lower plate holder to facilitate handling of the plate, and to prevent the plate from warping when liquid samples placed within wells of the multi-well assay plate are stored, analyzed and/or subjected to a reaction or other process, particularly when the samples are subjected to high temperatures. The upper plate holder is releasably engageable with the lower plate holder. Preferably, at least one detent positions and holds the upper plate holder in relation to the lower plate holder.

US Patent:

8573071, Nov 5, 2013

Filed:

Oct 15, 2010

Appl. No.:

12/905229

Inventors:

Steve Krueger - Deerfield WI, US
Julia E. Krueger - Deerfield WI, US
Cristopher Cowan - Fitchburg WI, US
Aaron Bonk - Reno NV, US

Assignee:

Promega Corporation - Madison WI

International Classification:

G01N 1/22
B01D 21/00

US Classification:

7386311, 422527

Abstract:

An apparatus for processing a liquid sample in a sample tube. The apparatus includes a base, a receptacle for receiving a sample tube, and a heating portion coupled to the base to selectively apply heat to the receptacle. A shaking portion is coupled to the base and supports the receptacle. The shaking portion agitates the receptacle with respect to the base. A magnetizing portion is coupled to the base and movable to selectively change a magnetic field with respect to the receptacle.

US Patent:

61938920, Feb 27, 2001

Filed:

Mar 3, 1999

Appl. No.:

9/261356

Inventors:

Julia E. Krueger - Deerfield WI
Steven T. Krueger - Deerfield WI
Cheryl M. Luedtke - Madison WI

Assignee:

Promega Corporation - Madison WI

International Classification:

B01D 3506

US Classification:

210695

Abstract:

Provided are a magnetic particle separation assembly and method for separating a magnetically responsive complex from a non-magnetic test media in which the magnetically responsive complex is suspended. The assembly comprises an invertible rack for holding specimen containers and a magnetic support member for supporting the rack. The magnetic support member has a base and a planar member bisecting the base and extending upwardly therefrom. The planar vertical member has a plurality of magnets embedded therein. The magnets are disposed in a substantially horizontal orientation parallel to the base and spaced from the base. The invertible rack has a slot therethrough dimensioned to accept the planar vertical member of the magnetic support member. In one position, at least one container of a particular size is positioned within the rack so as to be adjacent to the magnetic support member in final assembly such that the magnetically responsive complex is separated from the non-magnetic media. In a second position in which the rack is inverted with respect to the support member, at least one other container of a different size is positioned within the rack in order to accomplish a similar separation result.