Patents by Inventor Bujin Guo
Bujin Guo 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: 20200065553Abstract: The present disclosure relates to a remote sensing system which comprises at least a plurality of UAVs or drones to construct a measurement matrix in space for compressed sensing algorithms. A single remote sensor or a plural remote sensors is carried by each of UAV or drone in the fleet and can be independently turned on or turned off. Each UAV or drone in the fleet works as a floating pixel in said sparse measurement matrix, to output sampling data for processing and reconstruction of sensing image by said compressed sensing algorithm.Type: ApplicationFiled: August 26, 2018Publication date: February 27, 2020Inventors: BUJIN GUO, XIAODAN LI, JAMES M. GUO
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Patent number: 10418782Abstract: A wavelength-selectable laser device providing spatially-selectable wavelength(s) may be used to select one or more wavelengths for lasing in a tunable transmitter or transceiver, for example, in a wavelength division multiplexed (WDM) optical system such as a WDM passive optical network (PON). The wavelength-selectable laser device uses a dispersive optical element, such as a diffraction grating, to disperse light emitted from a laser emitter and to direct different wavelengths of the light toward a reflector at different spatial positions such that the wavelengths may be selected by allowing light to be reflected from selected spatial position(s) back into the laser emitter. Thus, the reflected light with a wavelength at the selected spatial position(s) is allowed to complete the laser cavity.Type: GrantFiled: July 3, 2017Date of Patent: September 17, 2019Assignee: Applied Optoelectronics, Inc.Inventors: Jun Zheng, Stefan J. Murry, Bujin Guo
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Publication number: 20170310085Abstract: A wavelength-selectable laser device providing spatially-selectable wavelength(s) may be used to select one or more wavelengths for lasing in a tunable transmitter or transceiver, for example, in a wavelength division multiplexed (WDM) optical system such as a WDM passive optical network (PON). The wavelength-selectable laser device uses a dispersive optical element, such as a diffraction grating, to disperse light emitted from a laser emitter and to direct different wavelengths of the light toward a reflector at different spatial positions such that the wavelengths may be selected by allowing light to be reflected from selected spatial position(s) back into the laser emitter. Thus, the reflected light with a wavelength at the selected spatial position(s) is allowed to complete the laser cavity.Type: ApplicationFiled: July 3, 2017Publication date: October 26, 2017Inventors: Jun ZHENG, Stefan J. MURRY, Bujin GUO
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Patent number: 9698567Abstract: A wavelength-selectable laser device providing spatially-selectable wavelength(s) may be used to select one or more wavelengths for lasing in a tunable transmitter or transceiver, for example, in a wavelength division multiplexed (WDM) optical system such as a WDM passive optical network (PON). The wavelength-selectable laser device uses a dispersive optical element, such as a diffraction grating, to disperse light emitted from a laser emitter and to direct different wavelengths of the light toward a reflector at different spatial positions such that the wavelengths may be selected by allowing light to be reflected from selected spatial position(s) back into the laser emitter. Thus, the reflected light with a wavelength at the selected spatial position(s) is allowed to complete the laser cavity.Type: GrantFiled: January 24, 2012Date of Patent: July 4, 2017Assignee: Applied Optoelectronics, Inc.Inventors: Jun Zheng, Stefan J. Murry, Bujin Guo
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Publication number: 20130016973Abstract: A wavelength-selectable laser device providing spatially-selectable wavelength(s) may be used to select one or more wavelengths for lasing in a tunable transmitter or transceiver, for example, in a wavelength division multiplexed (WDM) optical system such as a WDM passive optical network (PON). The wavelength-selectable laser device uses a dispersive optical element, such as a diffraction grating, to disperse light emitted from a laser emitter and to direct different wavelengths of the light toward a reflector at different spatial positions such that the wavelengths may be selected by allowing light to be reflected from selected spatial position(s) back into the laser emitter. Thus, the reflected light with a wavelength at the selected spatial position(s) is allowed to complete the laser cavity.Type: ApplicationFiled: January 24, 2012Publication date: January 17, 2013Applicant: APPLIED OPTOELECTRONICS, INC.Inventors: Jun Zheng, Stefan J. Murry, Bujin Guo
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Patent number: 7603166Abstract: Methods for the detection of inflammation associated with vulnerable atherosclerotic plaque to prevent heart attack and stroke are disclosed. The methods are also applicable to detection of infection, cancer, wounds or auto-immune disease in the body. Certain embodiments of the new methods provide a way of predicting the level of vulnerability of an atherosclerotic plaque to rupture or thrombus formation by assessing via fiber optic NIR spectrophotometry the status of two or more parameters associated with inflamed atherosclerotic plaque in a vessel of a living patient. From these measurements such conditions as low pH, hypoxia, low glucose, oxidative stress or compounds abundant in vulnerable plaque such as oxidized LDL cholesterol and oxidized metabolites of NO, significant active macrophage population, thin plaque cap, as well as senescence and/or apoptosis of smooth muscle or endothelial cells are determined with the assistance of a suitably programmed microprocessor.Type: GrantFiled: August 12, 2003Date of Patent: October 13, 2009Assignee: Board of Regents University of Texas SystemInventors: S. Ward Casscells, III, James T. Willerson, Morteza Naghavi, Bujin Guo
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Patent number: 7426409Abstract: Methods and devices are disclosed for detecting vulnerable atherosclerotic plaque, or plaque at risk of reducing blood flow in a vessel, by identifying a region of elevated temperature along a living vessel wall. The disclosure that human atherosclerotic plaque with measurable temperature heterogeneity has the morphological characteristics of plaque that is likely to ulcerate provides a new and sensitive technique for detecting and treating these dangerous plaques before myocardial infarction and its consequences occur. The disclosed methods are advantageous over conventional plaque detection techniques because they are capable of differentiating between those plaques that are at great risk of rupture, fissure, or ulceration, and consequent thrombosis and occlusion of the artery, and those that are not presently at risk. Infrared heat-sensing catheters useful for identifying potentially fatal arterial plaques in patients with disease of the coronary or other arteries are also described.Type: GrantFiled: August 5, 2002Date of Patent: September 16, 2008Assignee: Board of Regents, The University of Texas SystemInventors: S. Ward Casscells, III, James T. Willerson, Morteza Naghavi, Bujin Guo
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Patent number: 7097315Abstract: A method, apparatus and system for polarization conversion and recycling by using a half-pyramid shaped reflector with multiple reflective surfaces, or said reflector assembly, to obtain a desirable polarization rotation effect. The disclosed half-pyramid reflector comprises a plurality of reflective surfaces, which are formed so that an incoming beam passing perpendicularly through the entrant surface is reflected three times inside the device and leaves the exit surface with the direction of polarization being rotated 90 degrees. The preferred embodiments of polarization:conversion systems using the invented apparatus are included. Without employing any waveplate component, the disclosed system is not sensitive to wavelength variations of the light source, temperature changes, and polarization alignment errors.Type: GrantFiled: April 2, 2003Date of Patent: August 29, 2006Assignee: Microsensor TechnologyInventors: Haizhang Li, Bujin Guo, Xiaodan Li
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Patent number: 6763261Abstract: Methods and devices are disclosed for detecting vulnerable atherosclerotic plaque, or plaque at risk of reducing blood flow in a vessel, by a identifying a region of elevated temperature along a living vessel wall. The disclosure that human atherosclerotic plaque with measurable temperature heterogeneity has the morphological characteristics of plaque that is likely to ulcerate provides a new and sensitive technique for detecting and treating these dangerous plaques before myocardial infarction and its consequences occur. The disclosed methods are advantageous over conventional plaque detection techniques because they are capable of differentiating between those plaques that are at great risk of rupture, fissure, or ulceration, and consequent thrombosis and occlusion of the artery and those that are not presently at risk. Infrared heat-sensing catheters useful for identifying potentially fatal arterial plaques in patients with disease of the coronary or other arteries are also described.Type: GrantFiled: December 26, 2001Date of Patent: July 13, 2004Assignees: Board of Regents, The University of Texas System, Texas Heart InstituteInventors: S. Ward Casscells, III, James T. Willerson, Morteza Naghavi, Bujin Guo
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Publication number: 20040111016Abstract: Methods for the detection of inflammation associated with vulnerable atherosclerotic plaque to prevent heart attack and stroke are disclosed. The methods are also applicable to detection of infection, cancer, wounds or auto-immune disease in the body. Certain embodiments of the new methods provide a way of predicting the level of vulnerability of an atherosclerotic plaque to rupture or thrombus formation by assessing via fiber optic NIR spectrophotometry the status of two or more parameters associated with inflamed atherosclerotic plaque in a vessel of a living patient. From these measurements such conditions as low pH, hypoxia, low glucose, oxidative stress or compounds abundant in vulnerable plaque such as oxidized LDL cholesterol and oxidized metabolites of NO, significant active macrophage population, thin plaque cap, as well as senescence and/or apoptosis of smooth muscle or endothelial cells are determined with the assistance of a suitably programmed microprocessor.Type: ApplicationFiled: August 12, 2003Publication date: June 10, 2004Applicant: TEXAS HEART INSTITUTEInventors: S. Ward Casscells, James T. Willerson, Morteza Naghavi, Bujin Guo
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Publication number: 20040090763Abstract: A method, apparatus and system for polarization conversion and recycling by using a half-pyramid shaped reflector with multiple reflective surfaces, or said reflector assembly, to obtain a desirable polarization rotation effect. The disclosed half-pyramid reflector comprises a plurality of reflective surfaces, which are formed so that an incoming beam passing perpendicularly through the entrant surface is reflected three times inside the device and leaves the exit surface with the direction of polarization being rotated 90 degrees. The preferred embodiments of polarization conversion systems using the invented apparatus are included. Without employing any waveplate component, the disclosed system is not sensitive to wavelength variations of the light source, temperature changes, and polarization alignment errors.Type: ApplicationFiled: April 2, 2003Publication date: May 13, 2004Applicant: Microsensor TechnologyInventors: Haizhang Li, Bujin Guo, Xiaodan Li
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Publication number: 20030171691Abstract: Methods and devices are disclosed for detecting vulnerable atherosclerotic plaque, or plaque at risk of reducing blood flow in a vessel, by identifying a region of elevated temperature along a living vessel wall. The disclosure that human atherosclerotic plaque with measurable temperature heterogeneity has the morphological characteristics of plaque that is likely to ulcerate provides a new and sensitive technique for detecting and treating these dangerous plaques before myocardial infarction and its consequences occur. The disclosed methods are advantageous over conventional plaque detection techniques because they are capable of differentiating between those plaques that are at great risk of rupture, fissure, or ulceration, and consequent thrombosis and occlusion of the artery and those that are not presently at risk. Infrared heat-sensing catheters useful for identifying potentially fatal arterial plaques in patients with disease of the coronary or other arteries are also described.Type: ApplicationFiled: August 5, 2002Publication date: September 11, 2003Inventors: S. Ward Casscells, James T. Willerson, Morteza Naghavi, Bujin Guo
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Patent number: 6615071Abstract: Methods and devices are disclosed for detecting vulnerable atherosclerotic plaque, or plaque at risk of reducing blood flow in a vessel, by identifying a region of elevated temperature along a living vessel wall. The disclosure that human atherosclerotic plaque with measurable temperature heterogeneity has the morphological characteristics of plaque that is likely to ulcerate provides a new and sensitive technique for detecting and treating these dangerous plaques before myocardial infarction and its consequences occur. The disclosed methods are advantageous over conventional plaque detection techniques because they are capable of differentiating between those plaques that are at great risk of rupture, fissure, or ulceration, and consequent thrombosis and occlusion of the artery, and those that are not presently at risk. Infrared heat-sensing catheters useful for identifying potentially fatal arterial plaques in patients with disease of the coronary or other arteries are also described.Type: GrantFiled: June 25, 1999Date of Patent: September 2, 2003Assignee: Board of Regents, The University of Texas SystemInventors: S. Ward Casscells, III, James T. Willerson, Morteza Naghavi, Bujin Guo
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Publication number: 20030028114Abstract: Methods and devices are disclosed for detecting vulnerable atherosclerotic plaque, or plaque at risk of reducing blood flow in a vessel, by a identifying a region of elevated temperature along a living vessel wall. The disclosure that human atherosclerotic plaque with measurable temperature heterogeneity has the morphological characteristics of plaque that is likely to ulcerate provides a new and sensitive technique for detecting and treating these dangerous plaques before myocardial infarction and its consequences occur. The disclosed methods are advantageous over conventional plaque detection techniques because they are capable of differentiating between those plaques that are at great risk of rupture, fissure, or ulceration, and consequent thrombosis and occlusion of the artery and those that are not presently at risk. Infrared heat-sensing catheters useful for identifying potentially fatal arterial plaques in patients with disease of the coronary or other arteries are also described.Type: ApplicationFiled: December 26, 2001Publication date: February 6, 2003Applicant: TEXAS HEART INSTITUTEInventors: S. Ward Casscells, James T. Willerson, Morteza Naghavi, Bujin Guo
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Publication number: 20020193785Abstract: The present invention relates to methods for treating inflammation in body tissues. More specifically, certain disclosed methods relate to selectively inducing apoptosis in inflammatory immune cells by heating cells for a sufficient time and at a sufficient temperature to induce programmed cell death. The disclosed stents can be placed in contact with the inflammatory cells and heated under controlled conditions. The disclosed apparatus and methods are particularly suitable for treating athersclerotic plaques.Type: ApplicationFiled: August 14, 2002Publication date: December 19, 2002Inventors: Morteza Naghavi, Bujin Guo, Birendra Lal, S. Ward Casscells, James T. Willerson
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Patent number: 6451044Abstract: The present invention relates to methods for treating inflammation in body tissues. More specifically, certain disclosed methods relate to selectively inducing apoptosis in inflammatory immune cells by heating cells for a sufficient time and at a sufficient temperature to induce programmed cell death. The disclosed stents can be placed in contact with the inflammatory cells and heated under controlled conditions. The disclosed apparatus and methods are particularly suitable for treating athersclerotic plaques.Type: GrantFiled: December 28, 1999Date of Patent: September 17, 2002Assignees: Board of Regents, The University of Texas System, Texas Heart InstituteInventors: Morteza Naghavi, Bujin Guo, Birendra Lal, S. Ward Casscells, III, James T. Willerson