Patents by Inventor George R. Lennert
George R. Lennert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7117721Abstract: In combination, an instrument for determining a characteristic of a biological fluid or a control, and a cuvette for holding a sample of the biological fluid or control, the characteristic of which is to be determined. The instrument comprises a radiation-reflective surface, a first source for irradiating the surface, and a first detector for detecting radiation reflected from the surface. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls. The radiation reflective surface is disposed adjacent a second of the two opposed walls. A second source is provided for irradiating the surface. The first detector detects radiation from the second source reflected from the surface.Type: GrantFiled: February 4, 2003Date of Patent: October 10, 2006Assignee: Roche Diagnostics Operations, Inc.Inventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Publication number: 20030136183Abstract: In combination, an instrument for determining a characteristic of a biological fluid or a control, and a cuvette for holding a sample of the biological fluid or control, the characteristic of which is to be determined. The instrument comprises a radiation-reflective surface, a first source for irradiating the surface, and a first detector for detecting radiation reflected from the surface. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls. The radiation reflective surface is disposed adjacent a second of the two opposed walls. A second source is provided for irradiating the surface. The first detector detects radiation from the second source reflected from the surface.Type: ApplicationFiled: February 4, 2003Publication date: July 24, 2003Inventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Patent number: 6575017Abstract: In combination, an instrument for determining a characteristic of a biological fluid or a control, and a cuvette for holding a sample of the biological fluid or control, the characteristic of which is to be determined. The instrument comprises a radiation-reflective surface, a first source for irradiating the surface, and a first detector for detecting radiation reflected from the surface. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls. The radiation reflective surface is disposed adjacent a second of the two opposed walls. A second source is provided for irradiating the surface. The first detector detects radiation from the second source reflected from the surface.Type: GrantFiled: November 28, 2000Date of Patent: June 10, 2003Assignee: Roche Diagnostics Corporation, Inc.Inventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Patent number: 6189370Abstract: An instrument for determining a characteristic of a biological fluid or a control includes a radiation-reflective surface, a first source for irradiating the surface, and a first detector for detecting radiation reflected from the surface. A cuvette for use with the instrument holds a sample of the biological fluid or control the characteristic of which is to be determined. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The first source and first detector are disposed adjacent a first one of said two opposed walls and the radiation reflective surface is disposed adjacent a second of said two opposed walls.Type: GrantFiled: June 17, 1998Date of Patent: February 20, 2001Assignee: Roche Diagnostics CorporationInventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Patent number: 5886252Abstract: An instrument for determining a characteristic of a biological fluid or a control comprises a radiation-reflective surface, a first source for irradiating the surface, a first detector for detecting radiation reflected from the surface, and a mechanism for determining the characteristic based on the detected radiation. A slide holds a sample of the biological fluid or control the characteristic of which is to be determined. The slide has two opposed walls transparent to the radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls and the radiation reflective surface is disposed adjacent a second of the two opposed walls. A system is provided for supplying power and regulating supplied power from one of multiple power sources to the instrument.Type: GrantFiled: October 31, 1997Date of Patent: March 23, 1999Assignee: Boehringer Mannheim CorporationInventors: George R. Lennert, Rick L. Collins, William J. Murphy
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Patent number: 5832921Abstract: An instrument for determining a characteristic of a biological fluid or a control includes a heater and a heater control. The heater comprises a heater element, supported in heat conducting relationship to the biological fluid or control when the instrument is in use. A temperature sensitive element monitors the temperature of the heater element support. The heater control comprises a first temperature setpoint control for controlling the heater to maintain the temperature of the biological fluid or control at about a first temperature and a second temperature setpoint control for overriding the first temperature setpoint control to heat the biological fluid or control toward a second temperature.Type: GrantFiled: November 7, 1995Date of Patent: November 10, 1998Assignee: Boehringer Mannheim CorporationInventors: George R. Lennert, William J. Murphy, John W. Stoughton, Gary T. Neel
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Patent number: 5792944Abstract: An instrument for determining a characteristic of a biological fluid or a control comprises a radiation-reflective surface, a first source for irradiating the surface, a first detector for detecting radiation reflected from the surface, and a mechanism for determining the characteristic based on the detected radiation. A slide holds a sample of the biological fluid or control the characteristic of which is to be determined. The slide has two opposed walls transparent to the radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls and the radiation reflective surface is disposed adjacent a second of the two opposed walls. A system is provided for supplying power and regulating supplied power from one of multiple power sources to the instrument.Type: GrantFiled: August 16, 1996Date of Patent: August 11, 1998Assignee: Boehringer Mannheim CorporationInventors: George R. Lennert, Rick L. Collins, William J. Murphy
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Patent number: 5789664Abstract: An instrument and a method for determining a characteristic of a biological fluid or control comprise providing a radiation-reflective surface, a source for irradiating the surface, a detector for detecting radiation reflected from the surface, and a cuvette for holding a sample of the biological fluid or control. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The source and detector are disposed adjacent a first one of the two opposed walls and the radiation reflective surface is disposed adjacent the other wall. The method comprises detecting radiation from the source reflected from the surface using the radiation detector to determine a characteristic of the biological fluid or control.Type: GrantFiled: March 29, 1996Date of Patent: August 4, 1998Assignee: Boehringer Mannheim CorporationInventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Patent number: 5710622Abstract: A method of immunizing the operation of an instrument which determines a characteristic of a biological fluid or a control against noise. The instrument includes a surface upon which a user deposits a sample of biological fluid or control the characteristic of which is to be determined. The instrument irradiates the sample and detects radiation from the sample to determine the characteristic.Type: GrantFiled: June 7, 1995Date of Patent: January 20, 1998Assignee: Boehringer Mannheim CorporationInventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Patent number: 5686659Abstract: A method of determining whether a sample or a control has been applied to an instrument for measuring coagulation of a fluid by optically detecting when the fluid that has been applied to the instrument has passed a first and a second points, determining the flow time for the fluid between the two points, establishing a time threshold, and the flow time to the threshold to determining if the fluid is a sample or a control.Type: GrantFiled: June 7, 1995Date of Patent: November 11, 1997Assignee: Boehringer Mannheim CorporationInventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy
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Patent number: 5522255Abstract: An instrument and a method for determining a coagulation characteristic of blood, a blood fraction or a control comprise a radiation-reflective surface, a first source for irradiating the surface, and a first detector for detecting radiation reflected from the surface. A cuvette holds a sample of the blood, blood fraction or control the coagulation characteristic of which is to be determined. The cuvette has two opposed walls substantially transparent to the source radiation and reflected radiation. The first source and first detector are disposed adjacent a first one of the two opposed walls and the radiation reflective surface is disposed adjacent a second of the two opposed walls.Type: GrantFiled: August 31, 1993Date of Patent: June 4, 1996Assignee: Boehringer Mannheim CorporationInventors: Gary T. Neel, James R. Parker, Rick L. Collins, David E. Storvick, Charles L. Thomeczek, Jr., William J. Murphy, George R. Lennert, Morris J. Young, Daniel L. Kennedy