Patents by Inventor Michael Chang

Michael Chang 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).

  • Patent number: 9823244
    Abstract: A progressive compression test cartridge that is adapted with driven flow technology that can be coupled with a digital electronic device to make the test reading result more reliable quantitatively than visual interpretation. The test cartridge can provide test results typically in one minute or less. The test cartridge can accept a sample via a droplet or a stream sampling method. In the stream sampling method, the open end of the test cartridge allows the sample pad of the test strip to be exposed to the stream of fluid. A refracting pad on the base of the test cartridge can refract the original stream vector partially along the sample pad then continue flowing to elute and release the nanoparticles from the conjugate pad onto the membrane which is pre-coated with reactant(s). Collimated compression bars can prevent flooding sample by restricting the top and bottom surface of the conjugated pad.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: November 21, 2017
    Assignee: DNT SCIENTIFIC RESEARCH, LLC
    Inventors: Naishu Wang, Michael Chang Chien, Jiwei Ying
  • Publication number: 20170296798
    Abstract: A micropuncture kit for direct access of a surgically exposed vessel using direct visual guidance includes a micropuncture access needle having a proximal hub coupled to an elongate shaft defining an inner lumen and a visible depth indicator positioned on the elongate shaft a distance away from a distal tip of the elongate shaft. The kit includes an access guidewire sized to be received through the inner lumen of the micropuncture access needle and a microaccess cannula having an elongate body defining an inner lumen and a plurality of visible depth indicators formed on the elongate body. The guidewire includes a distal tip and at least one visible depth indicator positioned on the access guidewire a distance away from the distal tip of the guidewire. Each of the plurality of visible depth indicators identifies a distance from a distal tip of the cannula. Related systems, devices and methods are provided.
    Type: Application
    Filed: July 5, 2017
    Publication date: October 19, 2017
    Inventors: Stewart M. Kume, Michael Chang, Michael P. Wallace
  • Patent number: 9784733
    Abstract: A rapid diagnostic test device uses driven flow technology to significantly expedite the testing time of a sample. The rapid diagnostic test device can be used to analyze liquids, such as some body fluids, by using labeled molecular affinity binding, such as immunochromatography. The test device can detect an analyte, such as an antibody or antigen, which may indicate a particular condition, the presence of a particular drug, or the like. The device includes an inner member that receives the body fluid. Dripping holes in the inner member, or a sloped surface, creates a stream force of the body fluid against the sample pad of the test strip. A portion of the stream force of the body fluid is directed upward toward the conjugate pad to push the antibody/body fluid sample onto the membrane of the test strip.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 10, 2017
    Assignee: DNT SCIENTIFIC RESEARCH, LLC
    Inventors: Naishu Wang, Michael Chang Chien
  • Publication number: 20170209077
    Abstract: A fall sensor coupled to a necklace to detect a fall of a user is provided. The fall sensor includes a first sensing device, a second sensing device, a wireless module and a controller. The first sensing device is coupled to the necklace to detect a tension force of the necklace. The controller is coupled to the first sensing device, the second sensing device and the wireless module. When the first sensing device detects the tension force is changed, the controller activates the second sensing device to confirm whether the user is falling down, and when the user is determined to be fallen down, and the controller outputs an emergency message via the wireless module.
    Type: Application
    Filed: January 26, 2016
    Publication date: July 27, 2017
    Inventor: Michael CHANG
  • Patent number: 9702872
    Abstract: A rapid diagnostic test device uses driven flow technology to significantly expedite the testing time of a sample. The rapid diagnostic test device can be used to analyze liquids, such as some body fluids, by using labeled molecular affinity binding, such as immunochromatography. The test device can detect an analyte, such as an antibody or antigen, which may indicate a particular condition, the presence of a particular drug, or the like. The device includes a cover and base that combine to form an internal cavity for receiving a test strip. Compression bars in the cover and a compression cushion in the base sandwich a conjugate pad of the test strip to accelerate chemical mixtures to flow from the conjugate pad of the test strip toward fixed sites along the strip from which readings are taken.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 11, 2017
    Assignee: DNT SCIENTIFIC RESEARCH, LLC
    Inventors: Naishu Wang, Michael Chang Chien
  • Publication number: 20170171195
    Abstract: Techniques described herein include systems and methods for biometric authentication utilizing a dynamically updated biometric template derived from social media content of a user. In some embodiments, a service provider computer receives an authentication request that comprises biometric data provided by the user utilizing a user device. Social media content associated with the user may be received by the service provider computer from a social network service computer. In embodiments, the service provider computer may generate a biometric template for the user based on the received social media content where the biometric template is continually updated based on new social media content shared by the user. The service provider computer may determine a confidence score based on a comparison of the biometric data and the biometric template. The service provider computer may verify the authentication request for the user based at least in part on the confidence score.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 15, 2017
    Inventors: Michael Chang, Luba Goldberg, Neil Mumm, Stephanie Tsimis
  • Publication number: 20170123070
    Abstract: A wearable electronic device is provided, including a main body, a flexible member, a connecting member, and a first hinge. The connecting member is connected to the flexible member and has a hook portion. The first hinge is disposed on the main body and detachably engaged with the hook portion, such that the connecting member is pivotally connected to the main body.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventor: Michael CHANG
  • Patent number: 9632083
    Abstract: A rapid diagnostic test device uses driven flow technology to significantly expedite the testing time of a sample. The rapid diagnostic test device can be used to analyze liquids, such as some body fluids, by using labeled molecular affinity binding, such as immunochromatography. The test device can detect an analyte, such as an antibody or antigen, which may indicate a particular condition, the presence of a particular drug, or the like. The device includes a top and bottom that combine to form a fluid channel through which a fluid is forced from a fluid collector. A press pad in the device may press against a press pad on a test strip to accelerate chemical mixtures to flow from the conjugate color pad of the test strip toward fixed sites along the strip from which readings are taken.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: April 25, 2017
    Assignee: DNT Scientific Research, LLC
    Inventors: Naishu Wang, Michael Chang Chien
  • Patent number: 9583229
    Abstract: Improved system and method of X-ray laser microscopy that combines information obtained from both X-ray diffraction and X-ray imaging methods. The sample is placed in an ultra-cold, ultra-low pressure vacuum chamber, and exposed to brief bursts of coherent X-ray illumination further concentrated using X-ray mirrors and pinhole collimation methods. Higher resolution data from a sample is obtained using hard X-ray lasers, such as free electron X-ray lasers, and X-ray diffraction methods. Lower resolution data from the same sample can be obtained using any of hard or soft X-ray laser sources, and X-ray imaging methods employing nanoscale etched zone plate technology. In some embodiments both diffraction and imaging data can be obtained simultaneously. Data from both sources are combined to create a more complete representation of the sample.
    Type: Grant
    Filed: July 23, 2016
    Date of Patent: February 28, 2017
    Inventors: Yiying Cao, Roger Kim, Michael Chang, Zhuotong Xian, Katherine Han
  • Patent number: 9535061
    Abstract: A three-in-one apparatus for analyzing liquids, such as some body fluids, uses labeled molecular affinity binding, such as immunochromatography. The multi-functional diagnostic test device can detect an analyte, such as an antibody or antigen, which may indicate a particular condition. The multi-functional diagnostic test device provides multi-functional formats to apply in multiple different sampling methods, including the “dip”, “cassette” and “collection” formats. The diagnostic test device can accommodate a plurality of test strips, such as 18 test strips for analyzing up to 90 analytes.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: January 3, 2017
    Assignee: DNT SCIENTIFIC RESEARCH, LLC
    Inventors: Naishu Wang, Michael Chang Chien
  • Publication number: 20160329119
    Abstract: Improved system and method of X-ray laser microscopy that combines information obtained from both X-ray diffraction and X-ray imaging methods. The sample is placed in an ultra-cold, ultra-low pressure vacuum chamber, and exposed to brief bursts of coherent X-ray illumination further concentrated using X-ray mirrors and pinhole collimation methods. Higher resolution data from a sample is obtained using hard X-ray lasers, such as free electron X-ray lasers, and X-ray diffraction methods. Lower resolution data from the same sample can be obtained using any of hard or soft X-ray laser sources, and X-ray imaging methods employing nanoscale etched zone plate technology. In some embodiments both diffraction and imaging data can be obtained simultaneously. Data from both sources are combined to create a more complete representation of the sample.
    Type: Application
    Filed: July 23, 2016
    Publication date: November 10, 2016
    Inventors: Yiying Cao, Roger Kim, Michael Chang, Zhuotong Xian, Katherine Han
  • Patent number: 9454989
    Abstract: A disk drive is disclosed comprising a disk comprising a plurality of servo sectors defining a plurality of servo tracks. The servo tracks form a plurality of servo zones, where a servo data rate of servo sectors in a first servo zone is different than a servo data rate of servo sectors in a second servo zone. A servo control system servos a head over the disk. An estimated servo state of a servo control system is generated, and when the head crosses from a first servo zone to a second servo zone, the estimated servo state is adjusted to compensate for a transient in a circumferential distance between a servo sector in the first servo zone and a servo sector in the second servo zone.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: September 27, 2016
    Assignee: Western Digital Technologies, Inc.
    Inventors: Michael Chang, Guoxiao Guo, Jie Yu
  • Publication number: 20150339350
    Abstract: Provided are techniques for a Data-Partitioned Secondary Index (DPSI) partition level join. While using a Data-Partitioned Secondary Index (DPSI) to perform a join of an outer table and an inner table, a different task from multiple tasks is assigned to each partition of the inner table. With each task, a join is performed of the outer table and the assigned partition of the inner table using the DPSI to generate results. The results from each different task are merged.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 26, 2015
    Applicant: International Business Machines Corporation
    Inventors: Brian L. Baggett, Michael A. Chang, Shuanglin Guo, Ou Jin, Terence P. Purcell
  • Publication number: 20150322142
    Abstract: The invention features methods for preventing or treating CGRP associated disorders such as vasomotor symptoms and/or headaches (e.g., migraine, cluster headache, and tension headache) by administering an anti-CGRP antagonist antibody. Compositions for use in the disclosed methods are also provided. Antagonist antibody G1 and antibodies derived from G1 directed to CGRP are also described.
    Type: Application
    Filed: May 13, 2015
    Publication date: November 12, 2015
    Inventors: Marcelo BIGAL, Sarah Walter, Henry Stern, Michael Chang
  • Publication number: 20150286722
    Abstract: The ability to search for content such as documents and other resources is enhanced through the use of two external sources of information. Each of the external sources may provide information (e.g., metadata) that may be employed as searchable tags that may be used by a search engine to locate the resources. A first level of tags may be obtained in a variety of different ways. For example, information extracted from a resource may be sent to a metadata service provider which can provide suitable metadata associated with the resource. This metadata, which may serve as the first level of tags, may be subsequently sent to a second metadata service provider to obtain additional metadata that may serve as the second level of tags.
    Type: Application
    Filed: April 7, 2014
    Publication date: October 8, 2015
    Inventors: Michael Chang, Jesse Gallup
  • Patent number: 9153263
    Abstract: A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks defined by servo sectors forming a plurality of full wedges and a plurality of mini wedges. The wedge ID field of a servo sector forming one of the full wedges is offset from a beginning of a sync mark by a first offset, and the wedge ID field of a servo sector forming one of the mini wedges is offset from the beginning of the sync mark by a second offset equal to the first offset. A first servo sector is read from the disk to generate a read signal, the read signal is demodulated to detect the wedge ID of the first servo sector, and the detected wedge ID is evaluated to determine whether the first servo sector forms one of the mini wedges.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: October 6, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Michael Chang, Wei Guo, Russ A. Quisenberry, Guoxiao Guo
  • Publication number: 20150266948
    Abstract: The invention features methods for preventing or treating CGRP associated disorders such as vasomotor symptoms and/or headaches (e.g., migraine, cluster headache, and tension headache) by administering an anti-CGRP antagonist antibody. Compositions for use in the disclosed methods are also provided. Antagonist antibody G1 and antibodies derived from G1 directed to CGRP are also described.
    Type: Application
    Filed: March 20, 2015
    Publication date: September 24, 2015
    Inventors: Marcelo Bigal, Sarah Walter, Henry Stern, Michael Chang
  • Publication number: 20150254346
    Abstract: Search results are prioritized based on the size of the content sources from which the search results were obtained. Such content sources may include, for instance, a user's local sources (e.g., a hard drive associated with a user's computer), a user's online content sources (e.g. a user's cloud storage), and the entire web. Search results which are obtained from smaller content sources (i.e., those containing fewer resources) are presented to the user before search results which are obtained from larger content sources (i.e., those containing a greater number of resources).
    Type: Application
    Filed: March 4, 2014
    Publication date: September 10, 2015
    Inventors: Michael Chang, Jesse Gallup
  • Patent number: D764564
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: August 23, 2016
    Assignee: Performance Designed Products LLC
    Inventors: Nicholas DeSomov, Dennis Keith Foster, Michael Chang
  • Patent number: D767158
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: September 20, 2016
    Assignee: ALFA SCIENTIFIC DESIGNS, INC.
    Inventors: Naishu Wang, Michael Chang-Chien