Patents by Inventor Zhi Xu

Zhi Xu 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).

  • Publication number: 20190394221
    Abstract: A set of repackaging fingerprints generated independently of a particular original application is received. The set of repackaging fingerprints comprises a plurality of predetermined indicators of build-related structure that is independent of the particular original application's code structure. A mobile application is received. The received mobile application is analyzed for one or more indicators that the received mobile application is a repackaged version of the particular original application, using at least one repackaging fingerprint. In response to a result of the analysis, the received mobile application is categorized as a repackaged application.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 26, 2019
    Inventors: Zihang Xiao, Zhi Xu
  • Publication number: 20190377874
    Abstract: A mobile application is received. Each of a plurality of libraries associated with the mobile application is categorized using a set of library group categorizations including a common group and an uncommon group. An analysis of correlation using the categorized libraries is performed. A determination that the mobile application is similar to another mobile application is determined based on the analysis.
    Type: Application
    Filed: August 26, 2019
    Publication date: December 12, 2019
    Inventors: Zhi Xu, Zihang Xiao
  • Publication number: 20190364062
    Abstract: The automatic generation of malware family signatures is disclosed. A set of metadata associated with a plurality of samples is received. The samples are clustered. For members of a first cluster, a set of similarities shared among at least a portion of the members of the first cluster is determined. The similarities are evaluated for suitability as a malware family signature. Suitability is evaluated based on how well the similarities uniquely identify the members of the first cluster. In the event the similarities are determined to be suitable as a malware family signature, a signature is generated.
    Type: Application
    Filed: August 9, 2019
    Publication date: November 28, 2019
    Inventors: Zhi Xu, Jiajie Wang, Xiao Zhang, Wenjun Hu
  • Patent number: 10451479
    Abstract: Increased sensitivity of spectrometers through reducing noise in independent voltage signals via a differential voltage analyzer utilizing a reference wavelength from a wavelength region in which the optical absorption of the sample is negligible. In an embodiment, a grating permits selection of a reference wavelength. In another embodiment, filters permit selection of a reference wavelength. In yet another embodiment, both a grating and a filter permit selection of a reference wavelength. In an aspect, the differential voltage analyzer reduces noise by minimizing a differential voltage between the independent voltage signals and the reference voltage signal by adjusting the value of a cancellation coefficient.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: October 22, 2019
    Assignee: The Curators of the University of Missouri
    Inventor: Zhi Xu
  • Publication number: 20190316392
    Abstract: A locking device for a cover of a chassis comprises a first moving lock and a first handle. The first moving lock comprises a hook. The first moving lock slides on the cover. When the first moving lock is moved, the hook is driven to move between a locked position and an unlocked position, so that the cover is secured to or removed from the chassis.
    Type: Application
    Filed: May 18, 2018
    Publication date: October 17, 2019
    Inventors: DA-LONG SUN, JUN-ZHI XU
  • Patent number: 10445499
    Abstract: A reversing operation is performed on a mobile application, including by using a static analysis engine to determine a plurality of libraries used by the mobile application. A first library, included in the determined plurality of libraries, is selected for behavioral analysis to be performed upon, and a second library, included in the determined plurality of libraries, is not selected for behavioral analysis to be performed upon. The selection is performed based on determining whether the first and second libraries, respectively, comprise code previously designated as being at least one of: (1) authored by a vendor on a curated list, and (2) used by a plurality of applications, collectively authored by a plurality of authors, on a platform. An analysis of behaviors attributed to the first library is performed, and a classification of the first library is determined based at least in part on the analysis.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: October 15, 2019
    Assignee: Palo Alto Networks, Inc.
    Inventors: Zhi Xu, Zihang Xiao
  • Publication number: 20190308130
    Abstract: A multi-mechanism wet dust removal apparatus achieving water circulation use and a dust removal method. The multi-mechanism wet dust removal apparatus includes a dust collecting device, a dust settling and air-water separation device, a water circulating device and a dust discharging device, and dust removal is achieved by dust collecting, dust settling, air-water separation and dust discharging. The multi-mechanism wet dust removal apparatus achieving water circulation use and the dust removal method integrate multiple dust removal mechanisms, and the dust removal efficiency and effect are obvious.
    Type: Application
    Filed: July 3, 2017
    Publication date: October 10, 2019
    Applicant: SHANDONG YUNQING ENVIRONMENTAL SCI-TECH CO., LTD
    Inventor: Zhi XU
  • Patent number: 10432648
    Abstract: The automatic generation of malware family signatures is disclosed. A set of metadata associated with a plurality of samples is received. The samples are clustered. For members of a first cluster, a set of similarities shared among at least a portion of the members of the first cluster is determined. The similarities are evaluated for suitability as a malware family signature. In the event the similarities are determined to be suitable as a malware family signature, a signature is generated.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: October 1, 2019
    Assignee: Palo Alto Networks, Inc.
    Inventors: Zhi Xu, Jiajie Wang, Xiao Zhang, Wenjun Hu
  • Patent number: 10424682
    Abstract: A multilayer encapsulant film having at least two layers includes a first layer comprising an encapsulant resin, and a second layer comprising an encapsulant resin and at least one down-converter, such as a rare-earth organometallic complex. The down-converter may be present in an amount of at least 0.0001 wt % based on the total weight of the encapsulant film. Further layers of a multilayer encapsulant film may or may not include a down-converter. Preferably, a multilayer encapsulant film contains at least one layer with at least one down-converter and at least one layer without a down-converter. Such multilayer down-converting films may be used in an electronic device, such as a PV module.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: September 24, 2019
    Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANY
    Inventors: John A. Naumovitz, Hongyu Chen, Yan Huang, Ada Yu Zhang, Zhi Xu
  • Publication number: 20190268305
    Abstract: Network traffic associated with a communication between a client device and a resource is monitored. At least of the monitored traffic is encrypted. The encrypted traffic is categorized. One example way to categorize the encrypted traffic includes using Domain Name System (DNS) query information. A policy is applied to the communication based at least in part on the categorization of the encrypted traffic.
    Type: Application
    Filed: February 28, 2018
    Publication date: August 29, 2019
    Inventors: Zhi Xu, Yangjie Cheng, Cong Zheng
  • Publication number: 20190245870
    Abstract: The profiling and fingerprinting of communication and control (C&C) infrastructure is disclosed herein. An initial C&C profile is transmitted to a first network monitoring system. The initial C&C profile includes a domain corresponding to a C&C channel, and a pattern corresponding to the C&C channel. At least in part in response to information received from a second network monitoring system, the initial C&C profile is revised. An updated C&C profile is transmitted to the first network monitoring system.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Inventors: Zhi Xu, Cong Zheng
  • Patent number: 10320810
    Abstract: The profiling and fingerprinting of communication and control (C&C) infrastructure is disclosed herein. An initial C&C profile is transmitted to a first network monitoring system. The initial C&C profile includes at least one of: (1) a domain corresponding to a C&C channel, and (2) a C&C pattern corresponding to a C&C channel. At least in part in response to information received from a second network monitoring system, the initial C&C profile is revised. An updated C&C profile is transmitted to the first network monitoring system.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: June 11, 2019
    Assignee: Palo Alto Networks, Inc.
    Inventors: Zhi Xu, Cong Zheng
  • Publication number: 20190015027
    Abstract: Systems and methods are disclosed for non-invasively measuring blood glucose levels in a biological sample based on spectral data. This includes utilizing at least one light source configured to strike a target area of a sample, utilizing at least one light filter positioned to receive light transmitted through the target area of the sample from the at least one light source, utilizing at least one light detector positioned to receive light from the at least one light source and filtered by the at least one light filter, and to generate an output signal, having a time dependent current, which is indicative of the power of light detected, receiving the output signal from the at least one light detector with a processor, calculating the attenuance attributable to blood with a ratio factor based on the received output signal, and determining a blood glucose level based on the calculated attenuance.
    Type: Application
    Filed: September 3, 2018
    Publication date: January 17, 2019
    Inventor: Zhi Xu
  • Publication number: 20190015026
    Abstract: Systems and methods are disclosed for non-invasively measuring blood glucose levels in a biological sample based on spectral data. This includes utilizing at least one light source configured to strike a target area of a sample, utilizing at least one light filter positioned to receive light transmitted through the target area from the at least one light source, utilizing at least one light detector positioned to receive light from the at least one light source and filtered by the at least one light filter, and to generate an output signal, having a time dependent current, which is indicative of the power of light detected, receiving the output signal from the at least one light detector with a processor and based on the received output signal, calculating the attenuance attributable to blood in a sample with a signal-to-noise ratio of at least 20-to-1; and determining a blood glucose level.
    Type: Application
    Filed: September 3, 2018
    Publication date: January 17, 2019
    Inventor: Zhi Xu
  • Publication number: 20190014169
    Abstract: Techniques for categorizing mobile uniform resource locators (URLs) that are used by mobile applications are disclosed. A URL is extracted from a mobile application. A category for the URL is determined based on a categorization of the mobile application. The URL and its determined category are then generated as output.
    Type: Application
    Filed: August 21, 2018
    Publication date: January 10, 2019
    Inventors: Seokkyung Chung, Farshad Rostamabadi, William Redington Hewlett, II, Zhi Xu, Shadi Rostami-Hesarsorkh, Lin Xu, Lee Klarich
  • Publication number: 20180343816
    Abstract: The present disclosure provides methods for obtaining plants that exhibit useful traits by perturbation of organellar function in plants. Methods for identifying genetic loci that provide for useful traits in plants and plants produced with those loci are also provided. In addition, plants and grafted plants that exhibit, contain, or harbor the useful traits, parts of the plants including seeds, and products of the plants are provided as well as methods of using the plants. Recombinant DNA vectors and transgenic plants comprising those vectors that provide for organellar perturbation are also provided.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 6, 2018
    Inventors: Sally Ann Mackenzie, Ying-Zhi Xu
  • Patent number: 10111284
    Abstract: A light driving circuit includes a first and second illuminant unit, a power conversion unit, a first and second switching unit, and a first control unit. The power conversion unit receives an input voltage and converts the input voltage into an output voltage. The first switching unit is coupled to the first illuminant unit. When the first switching unit is turned on, the first illuminant unit is driven by the output voltage to emit light and generate a first output current. The second switching unit is coupled to the second illuminant unit. When the second switching unit is turned on, the second illuminant unit is driven by the output voltage to emit light and generate a second output current. The first control unit controls the first switching unit and the second switching unit to be turned on/off according to the first output current and the second current, respectively.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: October 23, 2018
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Wei-Qiang Zhang, Li-Zhi Xu, Zhi-Hui Ding
  • Publication number: 20180300483
    Abstract: Techniques for performing static and dynamic analysis on a mobile device application are disclosed. Static analysis is performed on a mobile device application using a static analysis engine. A set of static analysis results is generated. Dynamic analysis of the application is selectively customized based at least in part on a presence of a permission in the set of static analysis results. Dynamic analysis is performed using a dynamic analysis engine. A determination of whether the application is malicious is made based at least in part on the dynamic analysis.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 18, 2018
    Inventors: Zhi Xu, Xinran Wang, Huagang Xie
  • Patent number: 10080515
    Abstract: Systems and methods are disclosed for non-invasively measuring blood glucose levels in a biological sample based on spectral data. This includes utilizing at least one light source configured to strike a target area of a sample, utilizing at least one light filter positioned to receive light transmitted through the target area from the at least one light source, utilizing at least one light detector positioned to receive light from the at least one light source and filtered by the at least one light filter, and to generate an output signal, having a time dependent current, which is indicative of the power of light detected, receiving the output signal from the at least one light detector with a processor and based on the received output signal, calculating the attenuance attributable to blood in a sample with a signal-to-noise ratio of at least 20-to-1; and determining a blood glucose level.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: September 25, 2018
    Assignee: St. Louis Medical Devices, Inc.
    Inventor: Zhi Xu
  • Publication number: 20180266884
    Abstract: Increased sensitivity of spectrometers through reducing noise in independent voltage signals via a differential voltage analyzer utilizing a reference wavelength from a wavelength region in which the optical absorption of the sample is negligible. In an embodiment, a grating permits selection of a reference wavelength. In another embodiment, filters permit selection of a reference wavelength. In yet another embodiment, both a grating and a filter permit selection of a reference wavelength. In an aspect, the differential voltage analyzer reduces noise by minimizing a differential voltage between the independent voltage signals and the reference voltage signal by adjusting the value of a cancellation coefficient.
    Type: Application
    Filed: November 9, 2016
    Publication date: September 20, 2018
    Applicant: The Curators of the University of Missouri
    Inventor: Zhi Xu