Patents by Inventor Sivaramakrishnan Krishnamoorthy
Sivaramakrishnan Krishnamoorthy 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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Publication number: 20240066221Abstract: A device for monitoring bolus doses of a medicament administered by a drug delivery device, such as a wearable infusion device, includes a housing and a sensor disposed therein, where the sensor detects a signal generated by the wearable infusion device upon administration of a dose of a medicament. The device may also be provided as a system with the drug delivery device and a user device, where the user device gathers data regarding use of the drug delivery device and doses of medicament administered.Type: ApplicationFiled: August 25, 2023Publication date: February 29, 2024Inventors: Sivaramakrishnan Krishnamoorthy, Bradley Paddock
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Patent number: 10555793Abstract: The present invention employs a self-ligating orthodontic bracket comprising a body having a pair of laterally spaced gingival tie wings and a pair of laterally spaced occlusal tie wings, the gingival and occlusal tie wings projecting from a labial surface of the body; an arch wire slot extending mesially-distally across the body and between the gingival and occlusal tie wings to accommodate an arch wire; a free-sliding, controlled-locking, or pivoting clip wherein the clip allows placement and removal of the arch wire when in the open position and prevents the displacement of the arch wire from the bracket member when in the closed position.Type: GrantFiled: September 29, 2016Date of Patent: February 11, 2020Assignee: DENTSPLY SIRONA Inc.Inventors: Matthew James Falcone, Neil Verma, Sivaramakrishnan Krishnamoorthy, Tieming Ruan, Calvin Ng, David Zdurne
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Publication number: 20180214258Abstract: A package (10, 10?) for securing an orthodontic bracket (30) includes a pocket (12, 71) having an inclined floor (40, 70) and a mechanical locking device (51, 71) for removably holding the bracket (30) in the pocket (12, 71) until it is intentionally removed by a user.Type: ApplicationFiled: July 24, 2015Publication date: August 2, 2018Applicant: DENTSPLY SIRONA Inc.Inventors: Tieming RUAN, Calvin NG, Sivaramakrishnan KRISHNAMOORTHY
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Patent number: 9878090Abstract: A micropump that pumps liquid using electrothermally-induced flow is described, along with a corresponding self-regulating pump and infusion pump. The micropump has applications in microfluidic systems, such as biochips. The self-regulating infusion pump is useful for administration of large and small volumes of liquids such as drugs to patients and can be designed for a wide range of flow rates by combining multiple micropumps in one infusion pump system. The micropump uses electrode sequences on opposing surfaces of a flow chamber that are staggered with respect to each other. The opposing surfaces include staggered electrodes that have the same phase and same electrode sequence. As such electrodes with the same phase are staggered and not eclipsed.Type: GrantFiled: December 16, 2015Date of Patent: January 30, 2018Assignee: CFD Research CorporationInventors: Sivaramakrishnan Krishnamoorthy, Guiren Wang, Jianjun Feng, Yi Wang
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Publication number: 20170086946Abstract: An orthodontic bracket (10) of the type to be bonded to a patient's tooth has a base (22) and a side proximal (20) to a patient's tooth when positioned thereon. Proximal side (20) is provided with flow path regulating structures (30) that define a prescribed flow path for bonding material (32) when the bracket (10) is pressed to a tooth. Areas (40, 50) are provided as catchments for excess bonding material to thereby reduce the occurrence of flash.Type: ApplicationFiled: September 30, 2015Publication date: March 30, 2017Inventors: Tieming RUAN, Sivaramakrishnan KRISHNAMOORTHY, Andrew Murray LICHKUS
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Publication number: 20170014208Abstract: The present invention employs a self-ligating orthodontic bracket comprising a body having a pair of laterally spaced gingival tie wings and a pair of laterally spaced occlusal tie wings, the gingival and occlusal tie wings projecting from a labial surface of the body; an arch wire slot extending mesially-distally across the body and between the gingival and occlusal tie wings to accommodate an arch wire; a free-sliding, controlled-locking, or pivoting clip wherein the clip allows placement and removal of the arch wire when in the open position and prevents the displacement of the arch wire from the bracket member when in the closed position.Type: ApplicationFiled: September 29, 2016Publication date: January 19, 2017Applicant: DENTSPLY SIRONA Inc.Inventors: Matthew James Falcone, Neil Verma, Sivaramakrishnan Krishnamoorthy, Tieming Ruan, Calvin Ng, David Zdurne
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Patent number: 9480541Abstract: The present invention employs a self-ligating orthodontic bracket comprising a body having a pair of laterally spaced gingival tie wings and a pair of laterally spaced occlusal tie wings, the gingival and occlusal tie wings projecting from a labial surface of the body; an arch wire slot extending mesially-distally across the body and between the gingival and occlusal tie wings to accommodate an arch wire; a free-sliding, controlled-locking, or pivoting clip wherein the clip allows placement and removal of the arch wire when in the open position and prevents the displacement of the arch wire from the bracket member when in the closed position.Type: GrantFiled: October 9, 2013Date of Patent: November 1, 2016Assignee: DENTSPLY International Inc.Inventors: Matthew James Falcone, Neil Verma, Sivaramakrishnan Krishnamoorthy, Tieming Ruan, Calvin Ng, David A. Zdurne
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Publication number: 20160235912Abstract: A micropump that pumps liquid using electrothermally-induced flow is described, along with a corresponding self-regulating pump and infusion pump. The micropump has applications in microfluidic systems, such as biochips. The self-regulating infusion pump is useful for administration of large and small volumes of liquids such as drugs to patients and can be designed for a wide range of flow rates by combining multiple micropumps in one infusion pump system. The micropump uses electrode sequences on opposing surfaces of a flow chamber that are staggered with respect to each other. The opposing surfaces include staggered electrodes that have the same phase and same electrode sequence. As such electrodes with the same phase are staggered and not eclipsed.Type: ApplicationFiled: December 16, 2015Publication date: August 18, 2016Inventors: Sivaramakrishnan Krishnamoorthy, Guiren Wang, Jianjun Feng, Yi Wang
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Patent number: 9283597Abstract: A micropump that pumps liquid using electrothermally-induced flow is described, along with a corresponding self-regulating pump and infusion pump. The micropump has applications in microfluidic systems such as biochips. The self-regulating infusion pump is useful for the administration of large and small volumes of liquids such as drugs to patients and can be designed for a wide range of flow rates by combining multiple micropumps in one infusion pump system.Type: GrantFiled: September 6, 2006Date of Patent: March 15, 2016Assignee: CFD Research CorporationInventors: Sivaramakrishnan Krishnamoorthy, Guiren Wang, Jianjun Feng, Yi Wang
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Publication number: 20140212828Abstract: The present invention employs a self-ligating orthodontic bracket comprising a body having a pair of laterally spaced gingival tie wings and a pair of laterally spaced occlusal tie wings, the gingival and occlusal tie wings projecting from a labial surface of the body; an arch wire slot extending mesially-distally across the body and between the gingival and occlusal tie wings to accommodate an arch wire; a free-sliding, controlled-locking, or pivoting clip wherein the clip allows placement and removal of the arch wire when in the open position and prevents the displacement of the arch wire from the bracket member when in the closed position.Type: ApplicationFiled: October 9, 2013Publication date: July 31, 2014Applicant: DENTSPLY INTERNATIONAL INC.Inventors: Matthew James Falcone, Neil Verma, Sivaramakrishnan Krishnamoorthy, Tieming Ruan, Calvin NG, David A. Zdurne
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Patent number: 8431086Abstract: A medical device, such as a vascular access device, is disclosed for providing access to a medical fluid flow path for the introduction or withdrawal of medical fluids to and from the flow path. The access device includes an indicator for providing a visual indication when the access device has been exposed to an antiseptic agent.Type: GrantFiled: June 7, 2011Date of Patent: April 30, 2013Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Kent L. Lurvey, Shmuel Sternberg, Vadim V. Krongauz, Rosa H. Yeh, Robin G. Pauley, Dustin C. Cawthon, Ton That Hai, Lecon L. Woo, Ashok K. Khanna, Birendra K. Lal, Michael Tung-Kiung Ling, William S. Hoerle, Craig L. Sandford, Mark A. Nordhaus, Alexander Savitski, Nicklaus J. Kirichkow, Kenneth Glen Suh, Sivaramakrishnan Krishnamoorthy, Hsinjin E. Yang, Robert A. Clarke
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Patent number: 8147775Abstract: Apparatus and methods are disclosed for mixing and self-cleaning elements in microfluidic systems based on electrothermally induced fluid flow. The apparatus and methods provide for the control of fluid flow in and between components in a microfluidic system to cause the removal of unwanted liquids and particulates or mixing of liquids. The geometry and position of electrodes is adjusted to generate a temperature gradient in the liquid, thereby causing a non-uniform distribution of dielectric properties within the liquid. The dielectric non-uniformity produces a body force and flow in the solution, which is controlled by element and electrode geometries, electrode placement, and the frequency and waveform of the applied voltage.Type: GrantFiled: September 2, 2009Date of Patent: April 3, 2012Assignee: CFD Research CorporationInventors: Sivaramakrishnan Krishnamoorthy, Jianiun Feng
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Publication number: 20110236258Abstract: A medical device, such as a vascular access device, is disclosed for providing access to a medical fluid flow path for the introduction or withdrawal of medical fluids to and from the flow path. The access device includes an indicator for providing a visual indication when the access device has been exposed to an antiseptic agent.Type: ApplicationFiled: June 7, 2011Publication date: September 29, 2011Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Kent L. Lurvey, Shmuel Sternberg, Vadim V. Krongauz, Rosa H. Yeh, Robin G. Pauley, Dustin C. Cawthon, Ton That Hai, Lecon L. Woo, Ashok K. Khanna, Birendra K. Lal, Michael Tung-Kiung Ling, William S. Hoerle, Craig L. Sandford, Mark A. Nordhaus, Alexander Savitski, Nicklaus J. Kirichkow, Kenneth Glen Suh, Sivaramakrishnan Krishnamoorthy, Hsinjin E. Yang, Robert A. Clarke
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Patent number: 7998328Abstract: Methods and apparatus for the micro-scale, dielectrophoretic separation of particles are provided. Fluid suspensions of particles are sorted and separated by dielectrophoretic separation chambers that have at least two consecutive, electrically coupled planar electrodes separated by a gap in a fluid flow channel. The gap distance as well as applied potential can be used to control the dielectrophoretic forces generated. Using consecutive, electrically coupled electrodes rather than electrically coupled opposing electrodes facilitates higher flow volumes and rates. The methods and apparatus can be used, for example, to sort living, damaged, diseased, and/or dead cells and functionalized or ligand-bound polymer beads for subsequent identification and/or analysis.Type: GrantFiled: June 27, 2005Date of Patent: August 16, 2011Assignee: CFD Research CorporationInventors: Jianjun Feng, Guiren Wang, Sivaramakrishnan Krishnamoorthy, Kapil Pant, Shivshankar Sundaram
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Patent number: 7981381Abstract: A medical device, such as a vascular access device, is disclosed for providing access to a medical fluid flow path for the introduction or withdrawal of medical fluids to and from the flow path. The access device includes an indicator for providing a visual indication when the access device has been exposed to an antiseptic agent.Type: GrantFiled: July 20, 2007Date of Patent: July 19, 2011Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Kent L. Lurvey, Shmuel Sternberg, Vadim V. Krongauz, Rosa H. Yeh, Robin G. Pauley, Dustin C. Cawthon, Ton That Hai, Lecon L. Woo, Ashok K. Khanna, Birendra K. Lal, Michael Tung-Kiung Ling, William S. Hoerle, Craig L. Sandford, Mark A. Nordhaus, Alexander Savitski, Nicklaus J. Kirichkow, Kenneth Glen Suh, Sivaramakrishnan Krishnamoorthy, Hsinjin E. Yang, Robert A. Clarke
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Publication number: 20100008183Abstract: Apparatus and methods are disclosed for mixing and self-cleaning elements in microfluidic systems based on electrothermally induced fluid flow. The apparatus and methods provide for the control of fluid flow in and between components in a microfluidic system to cause the removal of unwanted liquids and particulates or mixing of liquids. The geometry and position of electrodes is adjusted to generate a temperature gradient in the liquid, thereby causing a non-uniform distribution of dielectric properties within the liquid. The dielectric non-uniformity produces a body force and flow in the solution, which is controlled by element and electrode geometries, electrode placement, and the frequency and waveform of the applied voltage.Type: ApplicationFiled: September 2, 2009Publication date: January 14, 2010Applicant: CFD RESEARCH CORPORATIONInventors: Sivaramakrishnan Krishnamoorthy, Jianiun Feng
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Patent number: 7604394Abstract: Apparatus and methods are disclosed for mixing and self-cleaning elements in microfluidic systems based on electrothermally induced fluid flow. The apparatus and methods provide for the control of fluid flow in and between components in a microfluidic system to cause the removal of unwanted liquids and particulates or mixing of liquids. The geometry and position of electrodes is adjusted to generate a temperature gradient in the liquid, thereby causing a non-uniform distribution of dielectric properties within the liquid. The dielectric non-uniformity produces a body force and flow in the solution, which is controlled by element and electrode geometries, electrode placement, and the frequency and waveform of the applied voltage.Type: GrantFiled: September 6, 2006Date of Patent: October 20, 2009Assignee: CFD Research CorporationInventors: Sivaramakrishnan Krishnamoorthy, Jianjun Feng
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Publication number: 20090069743Abstract: A sensor system for use with an infusion system may include at least one sensor disposed within a catheter, the at least one sensor comprising at least one of an optical sensor, an electrical sensor or a chemical/biochemical sensor. The sensor system may instead include a sample cell that is in fluid communication with the infusion system, which sample cell may be used with an analyzer to determine a patient's condition. The sensor system may be integrated with a control system for an infusion pump to control operation of the pump.Type: ApplicationFiled: September 11, 2008Publication date: March 12, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: SIVARAMAKRISHNAN KRISHNAMOORTHY, SANJUN NIU, BIRENDRA K. LAL, TUAN BUI, RANDOLPH R. MEINZER
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Publication number: 20080213631Abstract: The present invention is a flexible hybrid biofuel cell power strip for use in low power applications (less than one Watt) such as trickle charging to extend the charge of conventional batteries or to power devices such as microsensors, micropumps and miniaturized medial devices. The power strip anode comprises carbon nanotubes (CNTs) that transfer electrons directly from the active center of an oxidation-reduction (redox) enzyme to a flexible, conductive anode substrate. This allows the building of surface architectures with pore structures customized for specific applications and enzyme substrate-containing media. The cathode comprises a catalytic layer of transition metal nanoparticle catalyst in contact with air or other source of oxygen. The flexibility of the power strip allows it to be shaped into a wide variety of conformations and applications, including attachment to or implantation within living organisms.Type: ApplicationFiled: October 5, 2007Publication date: September 4, 2008Applicant: CFD RESEARCH CORPORATIONInventors: Sivaramakrishnan Krishnamoorthy, Aditya Bedekar, Jianjun Wei
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Publication number: 20080177518Abstract: The present invention is a simulation-based method for rapidly designing, evaluating, and/or optimizing a microfluidic system or biochip. The method provides an environment for schematic generation, system layout, problem setup, simulation, and post-processing. The method comprises a system solver used to simulate microfluidic processes such as pressure driven and electroosmotic flows, analytes dispersion, separation, and mixing, and biochemical reactions. The system solver uses a mixed methodology approach that enables the operation of complete, complex microfluidic systems to be simulated rapidly and iteratively.Type: ApplicationFiled: January 18, 2007Publication date: July 24, 2008Inventors: Sivaramakrishnan Krishnamoorthy, Aditya Bedekar, Sachin Siddhaye, Yi Wang, Shivshankar Sundaram