DAVID ALAN UHEN
Pilots at Kane St, Lyons, WI

6792637, Sep 21, 2004

Jan 8, 2002

10/040512

Kurt A. Reichold - Mukwonago WI
David A. Uhen - Burlington WI

U.S. Chemical Corporation - Brookfield WI

D06F 3902

8159, 68 1212, 68 1218, 68 17 R, 68207, 68 1202

An apparatus dispenses detergent into a warewasher from a reservoir wherein a flow control device controls the flow of the detergent. A sensor measures the electrical conductivity of water within the warewasher and produces a conductivity measurement. A controller operates the flow control device in a first mode in which the quantity of detergent dispensed into the warewasher is determined in response to the electrical conductivity of the water. If the conductivity measurement is determined to be unreliable, the controller operates in a second mode in which a predefined quantity of detergent is dispensed into the warewasher. The reliability of the conductivity measurement is determined based on the amount that the conductivity changes upon detergent being added to the warewasher.

5983710, Nov 16, 1999

Nov 24, 1997

8/977250

David A. Uhen - Burlington WI
Troy A. VerStrate - Oak Creek WI

Brinkman Instruments, Inc. - Westbury NY

G01N 3054

73 6152

A modular chromatography column heating and temperature control system includes a heater base module with a compartment for the chromatography column that includes a heater plate. A set of heater blocks is provided in pairs, each heater block having opposite main faces in which are formed channels that match chromatography columns of different diameters. The heater blocks are mounted in pairs on the heater plate with the chromatography column held between them in matching channels on the two adjacent main faces of the heater blocks. An appropriate number of pairs of heater blocks are mounted to the heater plate so that the pairs of heater blocks cover as much of the length of the chromatography column as desired. The set of available pairs of heater blocks may include heater blocks of different lengths, so that appropriate selections of pairs of heater blocks can be made to best match the length of the chromatography column. The heater blocks are formed of a good heat conductor, such as aluminum, to efficiently conduct heat from the heater plate to the chromatography column or away from the chromatography column to maintain the column at a desired temperature.

2012024, Sep 27, 2012

Mar 25, 2011

13/072448

Karl G. Schick - Madison WI, US
David Uhen - Burlington WI, US

G01N 21/59, G01N 21/01, G01J 1/10

356442, 3562432, 356246

Disposable, pre-sterilized, and pre-calibrated, pre-validated sensors are provided. The sensor comprises a disposable fluid conduit or reactor bag and a reusable sensor assembly. An optical bench or inset optical component is integrated within the disposable fluid conduit or bioreactor bag, which provides an optical light path through the conduit or bag. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the disposable fluid conduit or bag and on the reusable sensor assembly. Methods for calibrating the sensor and for determining a target property of an unknown fluid are also disclosed. The devices, systems and methods relating to the sensor are suitable for and can be outfitted for turbidity sensing.

2014006, Mar 6, 2014

Aug 12, 2013

13/964833

David Uhen - Burlington WI, US

Parker-Hannifin Corporation - Cleveland OH

G01N 37/00

73 5301

Single-use, pre-sterilized, and pre-calibrated, pre-validated sensors are provided. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the sensor or in a barcode printed on the sensor. These sensors may be utilized with in-line systems, closed fluid circuits, bioprocessing systems, or systems which require an aseptic environment while avoiding or reducing cleaning procedures and quality assurance variances. The sensors exhibit both their primary sensing function such as conductivity, pH level, dissolved oxygen, pressure or temperature, as well as at least one secondary sensing function of risk management or risk mitigation.

6103084, Aug 15, 2000

Jun 6, 1995

8/469967

David Alan Uhen - Burlington WI

Eppendorf Netheler-Hinz GmbH

B01D 6142, B01D 5702

204606

An apparatus for electroporation stores a level of charge, specified by a user, on a capacitor, which is delivered to a cuvette through an optically isolated high voltage switch. The capacitor is charged through a charging system, including a current mode pulse width modulation control circuit, which monitors the current in the primary winding of a transformer and supplies a pulse width modulated signal, limiting the current on every pulse to a level set by the microcontroller, to the controlling transistor in order to generate the drive to the primary winding of the transformer. A controlled amount of energy is transferred through each pulse to the capacitor. The microcontroller monitors the voltage on the capacitor up to a threshold level to predict the number of pulses necessary to store the requested amount of charge on the capacitor. The microcontroller will then count the number of pulses until the number of pulses necessary to store the requested amount of charge on the capacitor has been reached. At this point the requested voltage is delivered to the cuvette through the optically isolated high voltage switch comprised of sensitive gate SCRs coupled together in series.

8506162, Aug 13, 2013

Mar 19, 2009

12/407553

Karl G. Schick - Madison WI, US
David Uhen - Burlington WI, US

Parker-Hannifin Corporation - Cleveland OH

G01N 25/00, G01R 27/00

374141, 374 45, 374 1, 324691

Disposable, pre-sterilized, and pre-calibrated, pre-validated conductivity sensors are provided. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the sensor on in a barcode printed on the sensor. The sensors are calibrated using 0. 100 molar potassium chloride (KCl) solutions at 25 degrees Celsius. These sensors may be utilize with in-line systems, closed fluid circuits, bioprocessing systems, or systems which require an aseptic environment while avoiding or reducing cleaning procedures and quality assurance variances.

2013009, Apr 18, 2013

Oct 12, 2011

13/271608

Frank A. Katarow - Pewaukee WI, US
David A. Uhen - Burlington WI, US
John Gregory Poulos - Marietta GA, US
Matthew Blake Oefinger - Sherman TX, US

WATERMARK MEDICAL, LLC - Boca Raton FL

A61B 5/00

600300

A chain of custody device is provided. The chain of custody device includes a strap for attaching to a body part of a patient. The chain of custody device further includes a receiver connected to the strap and operable to be connected to a physiological monitoring system via a cable. The receiver stores an identifier that is readable by the physiological monitoring system and is usable by the physiological monitoring system to verify that the physiological monitoring system is connected to a correct chain of custody device. The chain of custody device further comprises a security means for preventing undetected removal of the strap and/or receiver. A system comprising the physiological monitoring system and the chain of custody device, and a method for using such system are also described.

5386833, Feb 7, 1995

Dec 23, 1993

8/173522

David Uhen - Burlington WI

Biochem International, Inc. - Waukesha WI

A61B 508

128719

An apparatus periodically measures the carbon dioxide content of the breath of a medical patient. The need to recalibrate the apparatus is determined by comparing the carbon dioxide measurements taken at different times during the respiratory cycle to corresponding reference levels. These levels often occur when the apparatus no longer is measuring accurately. When recalibration is indicated the apparatus waits until the patient begins inhaling so that the recalibration does not interfere with measuring the carbon dioxide during exhalation. The apparatus then measures the carbon dioxide content of the ambient air to define an offset value used in patient monitoring.

7788047, Aug 31, 2010

Apr 27, 2007

11/741162

Karl G. Schick - Madison WI, US
David Uhen - Burlington WI, US

SenCal LLC - Middleton WI

G01N 25/18, G06F 17/00, G06K 7/10

702 50, 702179, 324693, 324439, 324441, 324442, 324443, 324444, 324450, 7333505, 374 44, 235375, 23546201

Disposable, pre-sterilized, and pre-calibrated, pre-validated conductivity sensors are provided. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the sensor on in a barcode printed on the sensor. The sensors are calibrated using 0. 100 molar potassium chloride (KCl) solutions at 25 degrees Celsius. These sensors may be utilize with in-line systems, closed fluid circuits, bioprocessing systems, or systems which require an aseptic environment while avoiding or reducing cleaning procedures and quality assurance variances.

7857506, Dec 28, 2010

Dec 5, 2005

11/294296

Karl G. Schick - Madison WI, US
David Uhen - Burlington WI, US

SenCal LLC - Middleton WI

G01N 27/00, G01N 33/48

374 45, 374163, 374183, 702 19, 324441, 324705, 324717, 436150

Disposable, pre-sterilized, and pre-calibrated, pre-validated conductivity sensors are provided. These sensors are designed to store sensor-specific information, such as calibration and production information, in a non-volatile memory chip on the sensor. The sensors are calibrated using 0. 100 molar potassium chloride (KCl) solutions at 25 degrees Celsius. These sensors may be utilize with in-line systems, closed fluid circuits, bioprocessing systems, or systems which require an aseptic environment while avoiding or reducing cleaning procedures and quality assurance variances.