Patents by Inventor Mahesh R. Junnarkar
Mahesh R. Junnarkar 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: 11215557Abstract: Provided are methods of assessing the cleanliness of a flow cell of a flow cytometric system. The provided methods include computing a ratio of post-flow cell and pre-flow cell light beam intensities and using such a ratio to assess the cleanliness of the flow cell. Flow cytometric systems capable of monitoring the cleanliness of a flow cell contained within the system are also provided.Type: GrantFiled: November 16, 2020Date of Patent: January 4, 2022Assignee: Abbott LaboratoriesInventors: Svitlana Y. Berezhna, JrHung T. Tsai, David Spalding, Mahesh R. Junnarkar, Chia-Fa Hsu
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Publication number: 20210131962Abstract: Provided are methods of assessing the cleanliness of a flow cell of a flow cytometric system. The provided methods include computing a ratio of post-flow cell and pre-flow cell light beam intensities and using such a ratio to assess the cleanliness of the flow cell. Flow cytometric systems capable of monitoring the cleanliness of a flow cell contained within the system are also provided.Type: ApplicationFiled: November 16, 2020Publication date: May 6, 2021Inventors: Svitlana Y. Berezhna, JrHung T. Tsai, David Spalding, Mahesh R. Junnarkar, Chia-Fa Hsu
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Patent number: 10866187Abstract: Provided are methods of assessing the cleanliness of a flow cell of a flow cytometric system. The provided methods include computing a ratio of post-flow cell and pre-flow cell light beam intensities and using such a ratio to assess the cleanliness of the flow cell. Flow cytometric systems capable of monitoring the cleanliness of a flow cell contained within the system are also provided.Type: GrantFiled: April 14, 2020Date of Patent: December 15, 2020Assignee: Abbott LaboratoriesInventors: Svitlana Y. Berezhna, JrHung T Tsai, David Spalding, Mahesh R. Junnarkar, Chia-Fa Hsu
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Publication number: 20200309693Abstract: Provided are methods of assessing the cleanliness of a flow cell of a flow cytometric system. The provided methods include computing a ratio of post-flow cell and pre-flow cell light beam intensities and using such a ratio to assess the cleanliness of the flow cell. Flow cytometric systems capable of monitoring the cleanliness of a flow cell contained within the system are also provided.Type: ApplicationFiled: April 14, 2020Publication date: October 1, 2020Inventors: Svitlana Y. Berezhna, JrHung T Tsai, David Spalding, Mahesh R. Junnarkar, Chia-Fa Hsu
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Publication number: 20200292439Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: ApplicationFiled: April 15, 2020Publication date: September 17, 2020Inventor: Mahesh R. Junnarkar
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Patent number: 10648909Abstract: Provided are methods of assessing the cleanliness of a flow cell of a flow cytometric system. The provided methods include computing a ratio of post-flow cell and pre-flow cell light beam intensities and using such a ratio to assess the cleanliness of the flow cell. Flow cytometric systems capable of monitoring the cleanliness of a flow cell contained within the system are also provided.Type: GrantFiled: May 23, 2018Date of Patent: May 12, 2020Assignee: Abbott LaboratoriesInventors: Svitlana Y. Berezhna, JrHung T. Tsai, David Spalding, Mahesh R. Junnarkar, Chia-Fa Hsu
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Patent number: 10648898Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: GrantFiled: December 13, 2018Date of Patent: May 12, 2020Assignee: Abbott LaboratoriesInventor: Mahesh R. Junnarkar
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Publication number: 20190195775Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: ApplicationFiled: December 13, 2018Publication date: June 27, 2019Inventor: Mahesh R. Junnarkar
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Patent number: 10190962Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: GrantFiled: February 13, 2017Date of Patent: January 29, 2019Assignee: Abbott LaboratoriesInventor: Mahesh R. Junnarkar
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Publication number: 20180340888Abstract: Provided are methods of assessing the cleanliness of a flow cell of a flow cytometric system. The provided methods include computing a ratio of post-flow cell and pre-flow cell light beam intensities and using such a ratio to assess the cleanliness of the flow cell. Flow cytometric systems capable of monitoring the cleanliness of a flow cell contained within the system are also provided.Type: ApplicationFiled: May 23, 2018Publication date: November 29, 2018Inventors: Svitlana Y. Berezhna, JrHung T. Tsai, David Spalding, Mahesh R. Junnarkar, Chia-Fa Hsu
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Publication number: 20170219476Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: ApplicationFiled: February 13, 2017Publication date: August 3, 2017Inventor: Mahesh R. Junnarkar
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Patent number: 9606043Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: GrantFiled: November 30, 2015Date of Patent: March 28, 2017Assignee: Abbott LaboratoriesInventor: Mahesh R. Junnarkar
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Publication number: 20160153887Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: ApplicationFiled: November 30, 2015Publication date: June 2, 2016Inventor: Mahesh R. Junnarkar
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Patent number: 9201005Abstract: Flow cytometer systems are provided having intermediate angle scatter detection capability. In some aspects, systems are provided that include an intermediate angle scatter (IAS) light detector positioned to measure intermediate angle scatter emitted from a flow cytometer. The system further includes a mask disposed across a portion of the IAS light detector and positioned between the flow cell and the IAS light detector to cover at least a central portion of the IAS light detector so as to block a diffraction pattern observed at the detector. In some instances, the diffraction pattern is created by a flat beam profile irradiating the sample. Methods are also provided for configuring a flow cytometer to block a diffraction pattern created by (1) a flat laser beam profile irradiating a flow cytometer liquid sample, or (2) a mismatched index of refraction between a sheath fluid and a liquid sample in a flow cytometer.Type: GrantFiled: December 20, 2012Date of Patent: December 1, 2015Assignee: Abbott LaboratoriesInventor: Mahesh R. Junnarkar
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Patent number: 8400632Abstract: A method for increasing the throughput and/or the precision of a flow cytometer, or a hematology analyzer employing a flow cytometer, and for further reducing the complexity of such a cytometer or analyzer. The system and method includes utilizing the technique of laser rastering in combination with a lysis-free single-dilution method.Type: GrantFiled: April 16, 2012Date of Patent: March 19, 2013Assignee: Abbott LaboratoriesInventors: Giacomo Vacca, Richard G. Kendall, Norman R. Goldblatt, Michael W. Yee, Mahesh R. Junnarkar
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Publication number: 20120270306Abstract: A method for increasing the throughput and/or the precision of a flow cytometer, or a hematology analyzer employing a flow cytometer, and for further reducing the complexity of such a cytometer or analyzer. The system and method includes utilizing the technique of laser rastering in combination with a lysis-free single-dilution method.Type: ApplicationFiled: April 16, 2012Publication date: October 25, 2012Applicant: ABBOTT LABORATORIESInventors: Giacomo Vacca, Richard G. Kendall, Norman R. Goldblatt, Michael W. Yee, Mahesh R. Junnarkar
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Patent number: 8159670Abstract: A method for increasing the throughput, or the precision, or both the precision and the throughput, of a flow cytometer, or of a hematology analyzer employing a flow cytometer, and for further reducing the complexity of such a cytometer or analyzer, by utilizing the technique of laser rastering in combination with a lysis-free single-dilution method. Laser rastering involves sweeping a laser beam across a flowing sample stream in a hematology analyzer. A lysis-free single-dilution method involves performing all the flow cytometer measurements on a sample using a single aliquot, a single lysis-free reagent solution, a single dilution, and a single pass of said dilution through the measurement apparatus.Type: GrantFiled: October 31, 2008Date of Patent: April 17, 2012Assignee: Abbott LaboratoriesInventors: Giacomo Vacca, Richard G. Kendall, Norman R. Goldblatt, Michael W. Yee, Mahesh R. Junnarkar
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Publication number: 20090142765Abstract: A method for increasing the throughput, or the precision, or both the precision and the throughput, of a flow cytometer, or of a hematology analyzer employing a flow cytometer, and for further reducing the complexity of such a cytometer or analyzer, by utilizing the technique of laser rastering in combination with a lysis-free single-dilution method. Laser rastering involves sweeping a laser beam across a flowing sample stream in a hematology analyzer. A lysis-free single-dilution method involves performing all the flow cytometer measurements on a sample using a single aliquot, a single lysis-free reagent solution, a single dilution, and a single pass of said dilution through the measurement apparatus.Type: ApplicationFiled: October 31, 2008Publication date: June 4, 2009Applicant: ABBOTT LABORATORIESInventors: Giacomo Vacca, Richard G. Kendall, Norman R. Goldblatt, Michael W. Yee, Mahesh R. Junnarkar
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Patent number: 7317517Abstract: A waveguide under test can be exposed to a light signal whose polarization rotates between the vertical and horizontal polarizations. The intensity detected at a photodetector can be separated into AC and DC components. The AC components may be utilized to derive a characteristics which is indicative of birefringence of the waveguide. If the light signal is scanned over the waveguide under test, a measure of the birefringence at each position along the waveguide may be determined.Type: GrantFiled: July 31, 2003Date of Patent: January 8, 2008Assignee: Intel CorporationInventors: Mahesh R. Junnarkar, Bidhan P. Chaudhuri
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Patent number: 6898347Abstract: An optical network may include a detector for detecting the power of each of a plurality of channels of a wavelength division multiplexed optical signal in one embodiment of the present invention. Each channel may be conveyed to an interface underneath a detector by way of a core formed in the substrate. The interface may include a trench with one side surface angled to form a reflector to reflect light upwardly to be detected by the detector. The trench may be filled with a convex microlens.Type: GrantFiled: May 30, 2003Date of Patent: May 24, 2005Assignee: Intel CorporationInventors: Mahesh R. Junnarkar, Anirban Bandyopadhyay