Richard F Riedel, 637085 300, Trafalgar, IN 46181

5801817, Sep 1, 1998

May 5, 1997

8/851415

Richard A. Riedel - Carmel IN

UMM Electronics Inc. - Indianapolis IN

G01C 308

356 407

A method and apparatus for eliminating the effects of varying sample distance on optical measurements. In a first embodiment, a light source and a detector are both positioned in front of a measurement sample. A light source lens assembly focuses the light such that its focal point is behind the measurement sample, while a detector lens assembly focuses the light reflected from the measurement sample such that its focal point is in front of the measurement sample. Any movement of the measurement sample away from its nominal position does not affect the detector output because the effects of the source lens assembly and the detector lens assembly cancel each other. In a second embodiment, a light source and two detectors are positioned on one side off a measurement sample. The first detector is placed at a small angle relative to the sample normal, while the second detector is placed at a relatively large angle relative to the sample normal. A system output, which does not vary if the measurement sample is moved from its nominal position, comprises the weighted summation of the first and second detector outputs and a correction signal.

6069011, May 30, 2000

Dec 10, 1997

8/988304

Richard A. Riedel - Carmel IN

UMM Electronics, Inc. - Indianapolis IN

G01N 3349

436 34

A method for determining the application of a sample fluid on an analyte strip using first and second derivatives. Sample fluid, such as whole blood, is applied to a reagent matrix and sensor readings, such as reflectance readings or current readings, are taken of the fluid/reagent combination. The first and second derivatives of the sensor readings are calculated. A predetermined incubation time period is begun at either a local minimum in the first derivative or a local maximum following a local minimum in the second derivative data. At the expiration of the incubation period, another sensor reading is taken which is indicative of an analyte concentration in the sample fluid (such as glucose concentration in a whole blood sample).

6323495, Nov 27, 2001

Feb 18, 2000

9/506819

Richard A. Riedel - Carmel IN

UMM Electronics, Inc. - Indianapolis IN

G01N 2164

2504581

A method for measuring the fluorescent lifetime of an unknown fluorescent sample, such as a biological liquid, without the requirement of manual intervention or a separate reference standard. An energetic light beam having its low energy component filtered out is shined on the sample. An optical detector is positioned such that the intensity of the components of the light beam reflected from the sample reaching the detector is substantially minimized but light remitted and/or fluoresced by the sample does reach the detector with non-trivial intensity. Errors arising from the electronic components of the system, such as RFI and D. C. offset errors, are isolated and minimized by positioning an opaque filter between the sample and the detector and measuring the resulting signal. The resulting baseline measurement data is stored for later error subtraction. A low-pass filter is selectively placed between the sample and the detector to isolate the high-energy remitted light component coming from the sample and having the same phase as the original energetic beam used to stimulate fluorescence, and a high-pass filter selectively is placed between the sample and the detector to isolate the lower-energy fluoresced light component coming from the sample.

5174963, Dec 29, 1992

Jan 7, 1991

7/638170

Maurice D. Fuller - Carmel IN
Richard A. Riedel - Carmel IN

United Medical Manufacturing Company - Indianapolis IN

G01N 2177

422 8205

A portable blood glucose monitoring meter that employs an analog circuit in conjunction with a manually rotatable dial that varies the resistance of a potentiometer to locate a null position that balances the measure taken of the blood glucose-induced changes in the chemistries of disposable test strips. The dial supports a replaceable, pre-printed, man-readable calibration disk. The calibration disk displays in man-readable format blood glucose concentrations in milligrams per milliliter calibrated to the specific batch-lot chemistries of the disposable test strips used with the meter. A patient places a replaceable batch-lot calibration disk upon the dial, and inserts a corresponding test strip bearing a drop of capillary blood into the meter. The patient then manually adjusts the dial until prompting arrows indicate a null position. If the dial has rotated past the null position, an opposing arrow will illuminate indicating a need to rotate the dial in the opposite direction.

5232668, Aug 3, 1993

Feb 27, 1991

7/661850

Michael E. Grant - Sand Point ID
Russell T. Gray - Brownsburg IN
Mark A. Gregory - Carmel IN
Daniel L. Kennedy - Indianapolis IN
Dino Perin - New Palestine IN
Richard Riedel - Carmel IN
Stephen D. Scopatz - Indianapolis IN
David E. Storvick - Greenwood IN

Boehringer Mannheim Corporation - Indianapolis IN

G01N 2101
G01N 2177
G01N 2178
G01N 2147

422 8205

An instrument for analyzing test strips supporting chemistries which react with a medically significant component of a body fluid to indicate the concentration of the component in the body fluid. The instrument includes a pathway along which radiation is guided from a radiation source to a strip when the strip is inserted into the instrument and along which remission is guided from the strip to a radiation detector. A title provided on the instrument provides a first remission when no strip is inserted into the instrument. The tile is separated from the radiation source by the strip when the strip is inserted into the instrument. The first remission and the strip's remission, respectively, indicate the absence and the presence of the strip in the instrument. The strip also has a surface opposite the chemistry supporting surface characterized by a second strip remission different from the first strip remission. The instrument is capable of determining whether the strip has been inserted into the instrument correctly or backward.

6124585, Sep 26, 2000

Oct 27, 1998

9/179500

Richard A. Riedel - Carmel IN
James S. Hutchison - Indianapolis IN

UMM Electronics, Inc. - Indianapolis IN

G01N 2147

2502081

An optical system for measuring the reflectance of flat strips having potentially optically non-uniform surfaces. In one embodiment the systems includes an array of discrete light sources, wherein each light source is driven by its own individual current, such that the pattern reflected onto a photodector is substantially uniform in intensity.

5379214, Jan 3, 1995

Oct 21, 1993

8/140601

Steven R. Arbuckle - Indianapolis IN
Michael E. Grant - Sand Point ID
Richard Riedel - Carmel IN
Roger L. Hammer - Knighstown IN

Boehringer Mannheim Corporation - Indianapolis IN

G06F 1542

36441301

A method of communicating with one or more microcomputer (200) controlled instruments (10) for determining the concentration of a medically significant component of a body fluid. Each instrument (10) includes a port (220) through which instructions and data can be received from, and transmitted to, an external device. The method comprises the steps of transmitting to each instrument (10) an attention protocol for advising each instrument (10) that a further instruction is to be transmitted, transmitting one of a global address to all of such instruments (10) and an address unique to one of such instruments (10), and transmitting an instruction to all of the instruments (10) or to the above-mentioned one instrument (10).

6210344, Apr 3, 2001

Mar 24, 1999

9/275853

Dino Perin - New Palestine IN
Richard A. Riedel - Carmel IN

UMM Electronics, Inc. - Indianapolis IN

A61B 502

600528

A method and apparatus for measuring the heart rate of a patient. In one embodiment the apparatus includes a hollow bell mounted on a diaphragm. A transducer element is also positioned therein to receive sound transmitted through the diaphragm, convert the sounds into electrical impulses, and transmit the electrical impulses to a microprocessor. The electrical impulses have real-time wave patterns corresponding to the real-time wave patterns of the original sounds. The microprocessor performs mathematical operations on wave pattern data conveyed by the electrical impulses to determine a numerical value corresponding to the frequency of the wave patterns. This numerical value is sent to a digital output and displayed thereon.