Patents by Inventor Xitong Li

Xitong Li 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: 11917125
    Abstract: A test system for stability of video interfaces includes a display, a signal generator, a controller, and an image capturing sensor. The signal generator is configured to transmit multiple video signals to multiple video interfaces of the display. The controller is configured to control the display to sequentially display images according to each video signal. The image capturing sensor is configured to capture the images displayed sequentially by the display according to each video signal, and detect whether an image corresponding to each video signal is abnormal, and transmit a detection result to the controller.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: February 27, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanfu Li, Lihua Geng, Xitong Ma
  • Publication number: 20220370967
    Abstract: An emulsification device disclosed herein comprises: an outer tank having a first pressing end and a first exit end; and an inner tank having a second pressing end and a second exit end, wherein the inner tank is disposed inside the outer tank and the second exit end is located closer than the second pressing end to the first exit end, the outer tank is configured to house a first liquid and the inner tank is configured to house a second liquid, the first and second pressing ends are arranged so that one pressure can be applied onto both the first and second liquids, and under the pressure, the second liquid flows out of the inner tank through the second exit end and contacts with the first liquid in the outer tank so that an emulsion droplet comprising the second liquid within the first liquid is formed.
    Type: Application
    Filed: November 11, 2020
    Publication date: November 24, 2022
    Inventor: Xitong Li
  • Patent number: 11053780
    Abstract: The present invention discloses a pressurized test device and method for in-situ mining natural gas hydrates by jets, relating to the field of exploitation of marine natural gas hydrates. The device comprises an injection system, a jet breakup system, an annular pressure system, an axial pressure system, a backpressure system, a vacuum system, a simulation system, a collecting and processing system and a metering system, all of which can operate independently by controlling pipe valves on pipelines. The loading of the confining pressure of the device is independent of the loading of the axial pressure, without interference to each other. Meanwhile, the jet breakup process of natural gas hydrate-containing sediments can be observed in real time by a video camera.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: July 6, 2021
    Assignee: Jilin University
    Inventors: Chen Chen, Ying Zhang, Dongbin Pan, Jiang Zhu, Lianghao Zhai, Xitong Li, Han Zhang, Ying Zhu, Chengcai Jin
  • Publication number: 20200232305
    Abstract: The present invention discloses a pressurized test device and method for in-situ mining natural gas hydrates by jets, relating to the field of exploitation of marine natural gas hydrates. The device comprises an injection system, a jet breakup system, an annular pressure system, an axial pressure system, a backpressure system, a vacuum system, a simulation system, a collecting and processing system and a metering system, all of which can operate independently by controlling pipe valves on pipelines. The loading of the confining pressure of the device is independent of the loading of the axial pressure, without interference to each other. Meanwhile, the jet breakup process of natural gas hydrate-containing sediments can be observed in real time by a video camera.
    Type: Application
    Filed: January 16, 2020
    Publication date: July 23, 2020
    Inventors: Chen CHEN, Ying ZHANG, Dongbin PAN, Jiang ZHU, Lianghao ZHAI, Xitong LI, Han ZHANG, Ying ZHU, Chengcai JIN
  • Publication number: 20200208198
    Abstract: This disclosure provides methods, kits, and compositions to amplify sample DNA of low quantity by adding an amount of buffer DNA before amplification. The method protects the sample DNA against degradation and PCR bias. The method disclosed herein are useful to amplify DNA of low amount, such as genomic DNA from a single cell and therefore are especially useful for genetic diagnostic tests and precision medicine.
    Type: Application
    Filed: March 13, 2020
    Publication date: July 2, 2020
    Inventors: Xitong Li, Zhuanfen Cheng
  • Patent number: 10626444
    Abstract: This disclosure provides methods, kits, and compositions to amplify sample DNA of low quantity by adding an amount of buffer DNA before amplification. The method protects the sample DNA against degradation and PCR bias. The method disclosed herein are useful to amplify DNA of low amount, such as genomic DNA from a single cell and therefore are especially useful for genetic diagnostic tests and precision medicine.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 21, 2020
    Assignee: Acudx Inc.
    Inventors: Xitong Li, Zhuanfen Cheng
  • Publication number: 20190151853
    Abstract: This disclosure provides a droplet thermal cycling reaction (DTCR) device comprising a helical tubing through which a colloid flows; a pump that drives the flow of the colloid; and one or more temperature control sheets (TCS). The pump is configured to drive the colloid to flow through the helical tubing. Optionally, the pump is connected to either the inlet or the outlet of the helical tubing. The TCS sheets, configured to control temperatures for reactions occurring on the device, can be placed either outside or inside helical tubing, and contain at least two temperature zones so that the colloid flows through the different temperature zones along inside the helical tubing. The DTCR of this disclosure has technical benefits of reducing device complexity, enabling device miniaturization, reducing PCR reaction volume, dropletizing PCR reactions, and reducing the cost of digital PCR.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 23, 2019
    Inventors: Zhangmin Wang, Zhuanfen Cheng, Xitong Li
  • Patent number: 10179936
    Abstract: Algorithm-based molecular assays that involve measurement of expression levels of prognostic and/or predictive genes, or co-expressed genes thereof, from a biological sample obtained from a cancer patient, and analysis of the measured expression levels to provide information concerning the likelihood of recurrence of colorectal cancer and/or the likelihood of a beneficial response to chemotherapy for the patient are provided herein. Methods of analysis of gene expression values of prognostic and/or predictive genes, as well as methods of identifying gene expression-tumor region ratios, tumor-associated stromal surface area, and gene cliques, i.e. genes that co-express with a validated biomarker and thus may be substituted for that biomarker in an assay, are also provided.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: January 15, 2019
    Assignee: Genomic Health, Inc.
    Inventors: Steven Shak, Drew Watson, Xitong Li, Lawrence Lee, Kim Clark-Langone
  • Publication number: 20180127808
    Abstract: This disclosure provides methods, kits, and compositions to amplify sample DNA of low quantity by adding an amount of buffer DNA before amplification. The method protects the sample DNA against degradation and PCR bias. The method disclosed herein are useful to amplify DNA of low amount, such as genomic DNA from a single cell and therefore are especially useful for genetic diagnostic tests and precision medicine.
    Type: Application
    Filed: October 11, 2017
    Publication date: May 10, 2018
    Applicant: ACUDX Inc.
    Inventors: Xitong Li, Zhuanfen Cheng
  • Patent number: 8566039
    Abstract: This invention provides a quantitative method to determine transcriptionally active regions and quantify sequence abundance from large scale sequencing data. The invention also provides a system based on reference sequences to design and implement the method. The system processes large scale sequence data from high throughput sequencing, generates transcriptionally active region sequences as necessary, and quantifies the sequence abundance of the gene or transcriptionally active region. The method and system are useful for many analyses based on RNA expression profiling.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: October 22, 2013
    Assignee: Genomic Health, Inc.
    Inventors: Xitong Li, Kenneth Stineman
  • Publication number: 20100285980
    Abstract: Algorithm-based molecular assays that involve measurement of expression levels of prognostic and/or predictive genes, or co-expressed genes thereof, from a biological sample obtained from a cancer patient, and analysis of the measured expression levels to provide information concerning the likelihood of recurrence of colorectal cancer and/or the likelihood of a beneficial response to chemotherapy for the patient are provided herein. Methods of analysis of gene expression values of prognostic and/or predictive genes, as well as methods of identifying gene expression-tumor region ratios, tumor-associated stromal surface area, and gene cliques, i.e. genes that co-express with a validated biomarker and thus may be substituted for that biomarker in an assay, are also provided.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 11, 2010
    Inventors: Steven Shak, Drew Watson, Xitong Li, Lawrence Lee, Kim Langone
  • Publication number: 20090287420
    Abstract: This invention provides a quantitative method to determine transcriptionally active regions and quantify sequence abundance from large scale sequencing data. The invention also provides a system based on reference sequences to design and implement the method. The system processes large scale sequence data from high throughput sequencing, generates transcriptionally active region sequences as necessary, and quantifies the sequence abundance of the gene or transcriptionally active region. The method and system are useful for many analyses based on RNA expression profiling.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Inventors: Xitong Li, Kenneth Stineman
  • Patent number: 7587279
    Abstract: This invention provides a method for the quantitation and quality assurance of QPCR data. In particular, the invention provides a method for extracting data curves from a QPCR assay, estimating the shape and characteristics of an amplification curve and producing a quality score metric. The invention also provides a robust method for calculating a threshold cycle (CT) value and classifying the status of the QPCR results.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: September 8, 2009
    Assignee: Genomic Health
    Inventors: Xitong Li, Kenneth Stineman
  • Publication number: 20060008809
    Abstract: This invention provides a method for the quantitation and quality assurance of QPCR data. In particular, the invention provides a method for extracting data curves from a QPCR assay, estimating the shape and characteristics of an amplification curve and producing a quality score metric. The invention also provides a robust method for calculating a threshold cycle (CT) value and classifying the status of the QPCR results.
    Type: Application
    Filed: July 6, 2004
    Publication date: January 12, 2006
    Applicant: Genomic Health
    Inventors: Xitong Li, Kenneth Stineman
  • Publication number: 20060009916
    Abstract: A system for measuring data includes a first processor for extracting data curves from an assay. The first processor estimates a Quality Score (QS) based on the shape and variation of an amplification curve. A second processor calculates a threshold cycle (CT) value. The CT value is the fractional cycle number at which the assay signal rises above a threshold. The processor makes a status classification of the amplification curve. A database is provided to store the QS, C, and classification results.
    Type: Application
    Filed: July 6, 2004
    Publication date: January 12, 2006
    Inventors: Xitong Li, Kenneth Stineman
  • Publication number: 20050095634
    Abstract: The invention concerns an integrated, qRT-PCR-based system for analyzing and reporting RNA expression profiles of biological samples. In particular, the invention concerns a fully optimized and integrated multiplex, multi-analyte method for expression profiling of RNA in biological samples, including fixed, paraffin-embedded tissue samples. The gene expression profiles obtained can be used for the clinical diagnosis, classification and prognosis of various pathological conditions, including cancer.
    Type: Application
    Filed: October 11, 2004
    Publication date: May 5, 2005
    Applicant: Genomic Health Inc.
    Inventors: Joffre Baker, Maureen Cronin, Michael Kiefer, Xitong Li, Kim Clark