Patents by Inventor Ganesh Rajagopal
Ganesh Rajagopal 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: 8486346Abstract: A device and method for extending the useful life of a bulk liquid used in an automated clinical analyzer. Air from the atmosphere surrounding the automated clinical analyzer that displaces the bulk liquid consumed from a container is routed through a gas scrubber in order to remove or at least reduce the quantity of at least one contaminant present in that air. The gas scrubber is positioned between the bulk liquid in the container and the atmosphere surrounding the container. The gas scrubber contains a reagent that is capable of reacting with a contaminant in the atmosphere, whereby a required characteristic(s) of the bulk liquid does (do) not change excessively prior to the date that the bulk liquid is consumed. For example, if the contaminant is carbon dioxide, and the required characteristic of the bulk liquid is the level of pH of the bulk liquid, the reagent in the gas scrubber prevents the level of pH of the bulk liquid from changing excessively prior to the date that the bulk liquid is consumed.Type: GrantFiled: May 19, 2008Date of Patent: July 16, 2013Assignee: Abbott LaboratoriesInventors: Gregory A. Blackwell, Patrick P. Fritchie, Ganesh Rajagopal, James W. Whitt
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Patent number: 8449839Abstract: A system for removing liquid waste from an automated diagnostic instrument. The system comprises (a) an accumulator having at least one inlet for waste liquids and at least one outlet for waste liquids; (b) a vacuum sub-system connected to the accumulator, the vacuum sub-system comprising a vacuum pump; and (c) a drain portion for removing waste liquids comprising a peristaltic pump having spring-loaded rollers. The liquid waste from the automated diagnostic instrument is moved by a pressure differential created by the vacuum pump and the peristaltic pump having spring-loaded rollers.Type: GrantFiled: December 22, 2006Date of Patent: May 28, 2013Assignee: Abbott LaboratoriesInventors: Ganesh Rajagopal, James W. Whitt, GeDon G. Berryman, Daniel H. Lains, Brian L. Ochranek, Gregory A. Blackwell, Robert P. Luoma, II, Jack F. Ramsey
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Patent number: 8434345Abstract: An apparatus for improving the procedure for quantifying the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instrument. The apparatus of this invention comprises (a) at least one weigh cup; (b) at least one standard mass; (c) at least one transducer assembly to convert a value of weight to an electrical response; and (d) at least one electronic circuit for converting the electrical response to a measurement of volume. This invention provides a method for calibrating readings of the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instruments so that absolute measurements of the volume of liquid dispensed can be obtained.Type: GrantFiled: August 11, 2006Date of Patent: May 7, 2013Assignee: Abbott LaboratoriesInventors: Kurt M. Klosterman, Ganesh Rajagopal, Larry R. Jibson, James L. Dempski, Paul A. Matuszewski, Jeffrey W. Stewart, Jeffrey R. Swanson, David M. Tipotsch, Randall E. Youngs, Noman A. Abunimeh
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Patent number: 8171946Abstract: The invention provides probe washing cups and methods. A probe washing cup has a washing well and a waste cup. A drying section is disposed between an open end of the probe washing cup and an inlet plane of the washing well. The drying section has a channel that is aligned with the washing well. The channel has an opening for receiving the probe therethrough.Type: GrantFiled: October 26, 2009Date of Patent: May 8, 2012Assignee: Abbott LaboratoriesInventors: Gregory A. Blackwell, Ganesh Rajagopal
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Publication number: 20100037921Abstract: The invention provides probe washing cups and methods. A probe washing cup has a washing well and a waste cup. A drying section is disposed between an open end of the probe washing cup and an inlet plane of the washing well. The drying section has a channel that is aligned with the washing well. The channel has an opening for receiving the probe therethrough.Type: ApplicationFiled: October 26, 2009Publication date: February 18, 2010Applicant: ABBOTT LABORATORIESInventors: Gregory A. Blackwell, Ganesh Rajagopal
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Patent number: 7621282Abstract: The invention provides probe washing cups and methods. A probe washing cup has a washing well and a waste cup. A drying section is disposed between an open end of the probe washing cup and an inlet plane of the washing well. The drying section has a channel that is aligned with the washing well. The channel has an opening for receiving the probe therethrough.Type: GrantFiled: June 17, 2004Date of Patent: November 24, 2009Assignee: Abbott Laboratories, Inc.Inventors: Gregory A. Blackwell, Ganesh Rajagopal
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Publication number: 20090282932Abstract: A device and method for extending the useful life of a bulk liquid used in an automated clinical analyzer. Air from the atmosphere surrounding the automated clinical analyzer that displaces the bulk liquid consumed from a container is routed through a gas scrubber in order to remove or at least reduce the quantity of at least one contaminant present in that air. The gas scrubber is positioned between the bulk liquid in the container and the atmosphere surrounding the container. The gas scrubber contains a reagent that is capable of reacting with a contaminant in the atmosphere, whereby a required characteristic(s) of the bulk liquid does (do) not change excessively prior to the date that the bulk liquid is consumed. For example, if the contaminant is carbon dioxide, and the required characteristic of the bulk liquid is the level of pH of the bulk liquid, the reagent in the gas scrubber prevents the level of pH of the bulk liquid from changing excessively prior to the date that the bulk liquid is consumed.Type: ApplicationFiled: May 19, 2008Publication date: November 19, 2009Applicant: ABBOTT LABORATORIESInventors: Gregory A. Blackwell, Patrick P. Fritchie, Ganesh Rajagopal, James W. Whitt
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Publication number: 20080154543Abstract: A system for removing liquid waste from an automated diagnostic instrument. The system comprises (a) an accumulator having at least one inlet for waste liquids and at least one outlet for waste liquids; (b) a vacuum sub-system connected to the accumulator, said vacuum sub-system comprising a vacuum pump; and (c) a drain portion for removing waste liquids comprising a peristaltic pump having spring-loaded rollers. The liquid waste from the automated diagnostic instrument is moved by means of a pressure differential created by the vacuum pump and the peristaltic pump having spring-loaded rollers.Type: ApplicationFiled: December 22, 2006Publication date: June 26, 2008Inventors: Ganesh Rajagopal, James W. Whitt, GeDon G. Berryman, Daniel H. Lains, Brian L. Ochranek, Gregory A. Blackwell, Robert P. Luoma, Jack F. Ramsey
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Publication number: 20060272387Abstract: An apparatus for improving the procedure for quantifying the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instrument. The apparatus of this invention comprises (a) at least one weigh cup; (b) at least one standard mass; (c) at least one transducer assembly to convert a value of weight to an electrical response; and (d) at least one electronic circuit for converting the electrical response to a measurement of volume. This invention provides a method for calibrating readings of the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instruments so that absolute measurements of the volume of liquid dispensed can be obtained.Type: ApplicationFiled: August 11, 2006Publication date: December 7, 2006Inventors: Kurt Klosterman, Ganesh Rajagopal, Larry Jibson, James Dempski, Paul Matuszewski, Jeffrey Stewart, Jeffrey Swanson, David Tipotsch, Randall Youngs, Noman Abunimeh
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Patent number: 7114368Abstract: An apparatus for improving the procedure for quantifying the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instrument. The apparatus of this invention comprises (a) at least one weigh cup; (b) at least one standard mass; (c) at least one transducer assembly to convert a value of weight to an electrical response; and (d) at least one electronic circuit for converting the electrical response to a measurement of volume. This invention provides a method for calibrating readings of the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instruments so that absolute measurements of the volume of liquid dispensed can be obtained.Type: GrantFiled: April 8, 2003Date of Patent: October 3, 2006Assignee: Abbott LaboratoriesInventors: Kurt M. Klosterman, Ganesh Rajagopal, Larry R. Jibson, James L. Dempski, Paul A. Matuszewski, Jeffrey W. Stewart, Jeffrey R. Swanson, David M. Tipotsch, Randall E. Youngs, Noman A. Abunimeh
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Publication number: 20050279387Abstract: The invention provides probe washing cups and methods. A probe washing cup has a washing well and a waste cup. A drying section is disposed between an open end of the probe washing cup and an inlet plane of the washing well. The drying section has a channel that is aligned with the washing well. The channel has an opening for receiving the probe therethrough.Type: ApplicationFiled: June 17, 2004Publication date: December 22, 2005Inventors: Gregory Blackwell, Ganesh Rajagopal
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Publication number: 20040200260Abstract: An apparatus for improving the procedure for quantifying the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instrument. The apparatus of this invention comprises (a) at least one weigh cup; (b) at least one standard mass; (c) at least one transducer assembly to convert a value of weight to an electrical response; and (d) at least one electronic circuit for converting the electrical response to a measurement of volume. This invention provides a method for calibrating readings of the volume of liquid dispensed by a liquid-dispensing mechanism of an analytical instruments so that absolute measurements of the volume of liquid dispensed can be obtained.Type: ApplicationFiled: April 8, 2003Publication date: October 14, 2004Inventors: Kurt M. Klosterman, Ganesh Rajagopal, Larry R. Jibson, James L. Dempski, Paul A. Matuszewski, Jeffrey W. Stewart, Jeffrey R. Swanson, David M. Tipotsch, Randall E. Youngs, Norman A. Abunimeh
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Patent number: 5682662Abstract: One embodiment of the invention provides a joining element for joining a tube with a port. The joining element comprises a seal having a bore for accepting the tube, a nut and a ferrule. The ferrule has a bore for accepting the seal and the tube, a retaining member which retains the tube with the ferrule by engaging the tube, and a positive stop which limits engagement of the retaining member and the tube. The nut has a bore for accepting the ferrule and the tube and a bearing surface which engages the positive stop on the ferrule to positively limit engagement of the retaining member and the tube. Still other embodiments provide methods for forming a connection between a tube and a port. One such method comprises inserting the tube into a first member and a second member. The first member is moved with respect to the second member such that the second member is positioned partially within the first member. The first member, the second member and the tube are placed in the port.Type: GrantFiled: February 16, 1996Date of Patent: November 4, 1997Assignee: Abbott LaboratoriesInventors: Russell G. Coules, Ganesh Rajagopal, Jefferey W. Stewart
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Patent number: 5536049Abstract: One embodiment of the invention provides a joining element for joining a tube with a port. The joining element comprises a seal having a bore for accepting the tube, a nut and a ferrule. The ferrule has a bore for accepting the seal and the tube, a retaining member which retains the tube with the ferrule by engaging the tube, and a positive stop which limits engagement of the retaining member and the tube. The nut has a bore for accepting the ferrule and the tube and a bearing surface which engages the positive stop on the ferrule to positively limit engagement of the retaining member and the tube. Still other embodiments provide methods for forming a connection between a tube and a port. One such method comprises inserting the tube into a first member and a second member. The first member is moved with respect to the second member such that the second member is positioned partially within the first member. The first member, the second member and the tube are placed in the port.Type: GrantFiled: August 15, 1994Date of Patent: July 16, 1996Assignee: Abbott LaboratoriesInventors: Russell G. Coules, Ganesh Rajagopal, Jefferey W. Stewart
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Patent number: 4580172Abstract: A document handling machine which is capable of operating at two different fields of view, namely, a wide field of view and a narrow field, of view, incorporates a scanning carriage which moves generally parallel to the plane of a plurality of document copying platens. The scanner carriage incorporates a lens assembly which includes a lens and a CCD array, which assembly is movable within the carriage along the direction of scan and transverse to the direction of scan to define the two fields of view. Movement of the lens array between the respective fields of view is accomplished by interposing a relatively fixed stop which is engaged by the lens assembly while the carriage is being traversed along its main guideways by a scanning drive motor. The fixed stop is selectively engageable with the lens assembly while the carriage is moving, to cause the lens assembly to shift on the carriage between its respective fields of view.Type: GrantFiled: July 2, 1984Date of Patent: April 1, 1986Assignee: The Mead CorporationInventor: Ganesh Rajagopal
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Patent number: 4557372Abstract: A belt system of the type having a transparent belt entrained about a pair of support rollers which includes an improved alignment apparatus having a plurality of opaque flags positioned along an edge of the belt and shaped to taper in a transverse dimension, an encoder for detecting movement of the belt about the rollers and generating a signal proportional in frequency to the speed of the belt, a fixed photodetector which senses the passage of a portion of the flag through a narrow window so that the time of passage is determined by the position of the belt and flag relative to the sensor, an adjusting roller actuated by a stepper motor which laterally positions the belt relative to the support rollers, and a microprocessor which determines the position of the belt from the number of pulses generated during a period of time in which the sensor detects the passage of a flag and actuates the stepper motor to position the tracking roller to shift the belt laterally in response to the number of pulses counted.Type: GrantFiled: August 13, 1984Date of Patent: December 10, 1985Assignee: The Mead CorporationInventor: Ganesh Rajagopal
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Patent number: 4450753Abstract: An electro-hydraulic proportional actuator in which the actuator piston position is hydraulically controlled by fluid flow through solenoid valves operable by an electronic control system. An operator control provides an input voltage representing a desired piston position and a transducer generates a voltage representing the actual piston position. The difference between the input and output voltages generates a difference or error signal that is fed into a feedback system including a sample-and-hold circuit. A clock logic system is provided for transmitting the signal from the feedback system to the solenoid valves at predetermined intervals to activate either valve to move the actuator piston in either direction or to activate both valves to hold the piston at a desired position.Type: GrantFiled: May 12, 1980Date of Patent: May 29, 1984Assignee: Ford Motor CompanyInventors: Habil S. Basrai, Ganesh Rajagopal
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Patent number: 4422474Abstract: An application of the basic system of patent application Ser. No. 149,065 for operating a remote hydraulic valve. An electro-hydraulic actuator is mechanically linked to the control member of the remote valve. An input control signal is generated by multiplying a signal from a control handle position transducer by a scale factor constant produced by a full control setting with a gain control circuit. The gain control circuit also operates to set the constant to unity in case the signal from the handle position transducer exceeds a predetermined level corresponding to a maximum control handle setting.The control handle itself has four positions: Float, Lower, Neutral and Raise. The handle is biased so that if the handle is released from any position other than Neutral, the handle will go to the Neutral position provided a detent is off. The detent is put in the "off" position by an electrical solenoid which is actuated whenever the supply pressure to the remote valve exceeds a set value.Type: GrantFiled: September 14, 1981Date of Patent: December 27, 1983Assignee: Ford Motor CompanyInventors: Habil S. Basrai, Ganesh Rajagopal
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Patent number: 4343365Abstract: A control system for a tractor hydraulical power lift system having an electrohydraulic actuator (22) coupled to a main hydraulic valve (21), comprising a feedback electronic control circuit including a circuit for mathematically combining a plurality of transducer generated signals into a command signal. The command signal comprises the output signal of a first differential summing device (32) receiving a first input signal for a control handle transducer (24) from which is substracted a second input signal produced as the output of a signal mixer that combines input signals from a rockshaft transducer (25), a draft selector transducer (26) and a draft load transducer (27). The command signal and a signal from a transducer (28) coupled to the electrohydraulic actuator are fed into a differential summing device (49) that has as its output an error signal representing the actual and desired positions of an implement to be positioned by the power lift system.Type: GrantFiled: July 7, 1980Date of Patent: August 10, 1982Assignee: Ford Motor CompanyInventors: Ganesh Rajagopal, Habil S. Basrai