Patents by Inventor Brian Chiu
Brian Chiu 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: 20240102941Abstract: Methods and systems for calibrating simulated measurement signals generated by a parametric measurement model are described herein. Regression on real measurement signals is performed using a parametric model. The residual fitting error between the real measurement signals and simulated measurement signals generated by the parametric model characterizes the error of the parametric model at each set of estimated values of the one or more floating parameters. Simulated measurement signals are generated by the parametric model at specified values of the floating parameters. A residual fitting error associated with the simulated measurement signals generated at the specified values of the floating parameters is derived from the residual fitting errors calculated by the regression on the real measurement signals. The simulated measurement signals are calibrated by adding the residual fitting error to the uncalibrated, simulated measurement signals.Type: ApplicationFiled: September 11, 2023Publication date: March 28, 2024Inventors: Brian C. Lin, David Wu, Song Wu, Tianrong Zhan, Emily Chiu, Andrew Lagodzinski
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Patent number: 11938419Abstract: The present invention relates to a method and/or device for improving the separation behaviors and performance of aqueous two-phase system (ATPS) for the isolation and/or concentration of one or more target analytes from a sample. In one embodiment, the present method and device comprise ATPS components within a porous material and one or more phase separation behavior modifying agents that improve the separation behavior and performance characteristics of ATPS, including but not limited to the increasing the stability or reducing fluctuations of ATPS thought the adjustment of total volume of a sample solution that undergoes phase separation, volume ratio of the two phases of the ATPS, fluid flow rates, and concentrations of ATPS components.Type: GrantFiled: March 13, 2023Date of Patent: March 26, 2024Assignee: PHASE DIAGNOSTICS, INC.Inventors: Yin To Chiu, Brian Sangwoo Lee, Garrett Lee Mosley, Beatrice S. Lim
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Publication number: 20220183545Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: ApplicationFiled: December 22, 2021Publication date: June 16, 2022Inventors: Brian Y. TACHIBANA, Charles W. McNALL, Michael ZUNG, Peter Howard SMITH, Brian CHIU, Douglas Joseph Scott BOURNE, Priyanshu GUPTA
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Patent number: 11206975Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: GrantFiled: April 1, 2019Date of Patent: December 28, 2021Assignee: Avinger, Inc.Inventors: Brian Y. Tachibana, Charles W. McNall, Michael Zung, Peter Howard Smith, Brian Chiu, Douglas Joseph Scott Bourne, Priyanshu Gupta
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Publication number: 20200029801Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: ApplicationFiled: April 1, 2019Publication date: January 30, 2020Inventors: Brian Y. TACHIBANA, Charles W. McNALL, Michael ZUNG, Peter Howard SMITH, Brian CHIU, Douglas Joseph Scott BOURNE, Priyanshu GUPTA
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Patent number: 10244934Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: GrantFiled: May 23, 2016Date of Patent: April 2, 2019Assignee: Avinger, Inc.Inventors: Brian Y. Tachibana, Charles W. McNall, Michael Zung, Peter Howard Smith, Brian Chiu, Douglas Joseph Scott Bourne, Priyanshu Gupta
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Publication number: 20160338582Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: ApplicationFiled: May 23, 2016Publication date: November 24, 2016Inventors: Brian Y. TACHIBANA, Charles W. McNALL, Michael ZUNG, Peter Howard SMITH, Brian CHIU, Douglas Joseph Scott BOURNE, Priyanshu GUPTA
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Patent number: 9345398Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: GrantFiled: March 15, 2013Date of Patent: May 24, 2016Assignee: Avinger, Inc.Inventors: Brian Y. Tachibana, Charles W. McNall, Michael Zung, Peter Howard Smith, Brian Chiu, Douglas Joseph Scott Bourne, Priyanshu Gupta
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Patent number: 9226676Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a diabetic disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the diabetic disease or disorder.Type: GrantFiled: March 18, 2013Date of Patent: January 5, 2016Assignee: Dynacardia, Inc.Inventor: Wei-min Brian Chiu
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Publication number: 20150126856Abstract: A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which at least a portion of the fiber optic rotating junction extends.Type: ApplicationFiled: March 15, 2013Publication date: May 7, 2015Inventors: Brian Y. Tachibana, Charles W. McNall, Michael Zung, Peter Howard Smith, Brian Chiu, Douglas Joseph Scott Bourne, Priyanshu Gupta
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Publication number: 20150032015Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a diabetic disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the diabetic disease or disorder.Type: ApplicationFiled: March 8, 2013Publication date: January 29, 2015Applicant: DYNACARDIA, INC.Inventor: Wei-min Brian Chiu
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Patent number: 8626274Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a heart disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the heart disease or disorder.Type: GrantFiled: December 31, 2008Date of Patent: January 7, 2014Assignee: Dynacardia, Inc.Inventors: Wei-Min Brian Chiu, Chi-Jen Tseng
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Publication number: 20120330170Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a heart disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the heart disease or disorder.Type: ApplicationFiled: December 31, 2008Publication date: December 27, 2012Inventors: Wei-Min Brian Chiu, Chi-Jen Tseng
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Publication number: 20110077542Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a heart disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the heart disease or disorder.Type: ApplicationFiled: December 3, 2010Publication date: March 31, 2011Applicant: DYNACARDIA, INC.Inventors: Chi-jen Tseng, Wei-min Brian Chiu
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Patent number: 7869864Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a heart disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the heart disease or disorder.Type: GrantFiled: July 9, 2007Date of Patent: January 11, 2011Assignee: Dynacardia, Inc.Inventors: Chi-jen Tseng, Wei-min Brian Chiu
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Publication number: 20090018459Abstract: Disclosed herein methods, devices, and systems for detecting and diagnosing a heart disease or disorder in a subject from a prime electrocardiogram which comprises calculating at least one distribution function of the prime electrocardiogram and determining whether the distribution function is indicative of the presence of absence of the heart disease or disorder.Type: ApplicationFiled: July 9, 2007Publication date: January 15, 2009Inventors: Chi-jen Tseng, Wei-min Brian Chiu
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Patent number: 7419501Abstract: A method of deploying a prosthesis includes engaging a hub assembly of a handle to a threaded outer surface of a slide shaft of the handle; rotating the hub assembly to cause axial translation of the hub assembly and a sheath coupled to the hub assembly to initiate deployment of the prosthesis; disengaging the hub assembly from the threaded outer surface by pivoting a thread tooth of the hub assembly out of threaded engagement with the threaded outer surface; and sliding the hub assembly on the slide shaft to further retract the sheath and complete deployment of the prosthesis.Type: GrantFiled: July 27, 2006Date of Patent: September 2, 2008Assignee: Medtronic Vascular, Inc.Inventors: Brian Chiu, Ari Gershman, Burt Goodson, Paul L. Weber, Richard E. Repp, David F. Jensen
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Patent number: 6808088Abstract: A spigot device for a liquid container includes a single-piece molded conduit confining a primary passage and a channel which are surrounded by an outer surrounding wall and which are not communicated with each other within the conduit. An intake end of each of the primary passage and the channel is in fluid communication with a bottom outlet of the container. An exit end of the primary passage is in fluid communication with a fluid passage in which a valve body is disposed to control flow of liquid from the container into a spout. An upright branch tube is in fluid communication with the channel to permit the liquid in the container to flow into the branch tube so that the level of the liquid in the container can be monitored by observing the level of the liquid in the branch tube.Type: GrantFiled: July 5, 2002Date of Patent: October 26, 2004Assignee: Fuu Hwa Vacuum Bottle Co., Ltd.Inventor: Brian Chiu
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Publication number: 20040004094Abstract: A spigot device for a liquid container includes a single-piece molded conduit confining a primary passage and a channel which are surrounded by an outer surrounding wall and which are not communicated with each other within the conduit. An intake end of each of the primary passage and the channel is in fluid communication with a bottom outlet of the container. An exit end of the primary passage is in fluid communication with a fluid passage in which a valve body is disposed to control flow of liquid from the container into a spout. An upright branch tube is in fluid communication with the channel to permit the liquid in the container to flow into the branch tube so that the level of the liquid in the container can be monitored by observing the level of the liquid in the branch tube.Type: ApplicationFiled: July 5, 2002Publication date: January 8, 2004Applicant: FUU HWA VACUUM BOTTLE CO., LTD.Inventor: Brian Chiu
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Patent number: D478460Type: GrantFiled: June 27, 2002Date of Patent: August 19, 2003Assignee: Fuu Hwa Vacuum Bottle Co., Ltd.Inventor: Brian Chiu