Stephen John Takacs

US Patent:

20050241703, Nov 3, 2005

Filed:

Sep 29, 2004

Appl. No.:

10/953741

Inventors:

Stephen Takacs - Evans CO, US

International Classification:

F16K011/085

US Classification:

137625460

Abstract:

A multi-port precision valve with a rotor having the valve face moved to a chamfered surface. The chamfered valve face makes an angle with respect to the axis of rotation of the rotor. The exit ports make an angle with respect to the valve face of between 70 and 90 degrees.

US Patent:

20060040403, Feb 23, 2006

Filed:

Feb 8, 2005

Appl. No.:

11/053111

Inventors:

Karin Bogren - Fort Collins CO, US
Stephen Takacs - Evans CO, US
James Harbridge - Thornton CO, US

International Classification:

B01L 3/00

US Classification:

436180000, 422100000

Abstract:

A method and apparatus for chemical analysis is disclosed that uses a sample cup insert. The insert is pre-coated with a reaction agent, enzyme, or chemical to facilitate testing of the sample. A sample fluid in the sample cup is agitated by fluid pulsing to speed the reaction or to speed a pre-conditioning step.

US Patent:

20050196319, Sep 8, 2005

Filed:

Sep 20, 2004

Appl. No.:

10/945193

Inventors:

Karin Bogren - Fort Collins CO, US
Stephen Takacs - Evans CO, US
Douglas Royer - Windsor CO, US

International Classification:

B01L003/00

US Classification:

422058000, 422102000

Abstract:

A cell for chemical analysis is disclosed that increases the surface area over standard discrete cells for approximately the same sample volume. The surface area is pre-coated with a reaction agent, enzyme, or chemical to facilitate testing of the sample. The cell may be in a configuration to contain any toxic reaction agent after use.