Patents by Inventor Stephen Chang

Stephen 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).

  • Publication number: 20160231251
    Abstract: The present invention relates to assay test devices, and methods and kits for use to monitor, sense, read and display results by using devices with printed electronics, such as batteries, reading devices, and other circuitry and/or using colorimetric means for testing by using a sensitive indicator pH dye, or both.
    Type: Application
    Filed: August 28, 2014
    Publication date: August 11, 2016
    Inventors: Chung-Pei OU, Kaushal SAGAR, Abdur Rub Abdur RAHMAN, Winston WONG, JR., Stephen Chang-Chi KAO, Catia MARQUES
  • Patent number: 9142108
    Abstract: A security method and apparatus is disclosed. In one embodiment, a security method comprises storing one or more data points representing an alarm condition in a memory, generating an electronic signal from a motion sensor in response to movement of the door or window, comparing the electronic signal to the data points, and detecting an alarm condition of the door or window if the electronic signal substantially matches the data points.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: September 22, 2015
    Assignee: Ecolink Intelligent Technology, Inc.
    Inventors: George Seelman, Michael Bailey, Jay Stone, Michael Lamb, Stephen Chang
  • Publication number: 20150168394
    Abstract: Lateral flow devices and methods of use for a molecular diagnostic assay are provided. The method is suitable for detection or monitoring of targets, including biological, chemical, and material targets that exist in very low concentrations in biological samples. The methods and devices of the present application are amenable to power source-free point of care testing.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 18, 2015
    Inventors: Winston Wong, JR., Stephen Chang-Chi Kao
  • Publication number: 20150166964
    Abstract: The present invention provides various improved systems and methods for obtaining, generating, culturing, and handling cells, such as stem cells (including induced pluripotent stem cells or iPSCs) and differentiated cells, as well as cells and cell panels produced using such systems and methods, and uses of such cells and cell panels.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 18, 2015
    Inventors: SCOTT NOGGLE, KEVIN EGGAN, STEPHEN CHANG, SUSAN SOLOMON
  • Publication number: 20150017639
    Abstract: Lateral flow devices and methods of use for a molecular diagnostic assay are provided. The method is suitable for detection or monitoring of targets, including biological, chemical, and material targets that exist in very low concentrations in biological samples. The methods and devices of the present application are amenable to power source-free point of care testing.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 15, 2015
    Inventors: Winston Wong, JR., Stephen Chang-Chi Kao
  • Publication number: 20150010904
    Abstract: Lateral flow devices and methods of use for a molecular diagnostic assay are provided. The method is suitable for detection or monitoring of targets, including biological, chemical, and material targets that exist in very low concentrations in biological samples. The methods and devices of the present application are amenable to power source-free point of care testing.
    Type: Application
    Filed: September 24, 2014
    Publication date: January 8, 2015
    Inventors: Winston Wong, JR., Stephen Chang-Chi Kao
  • Publication number: 20130196300
    Abstract: A surgical training system and method. The system comprises means for recording reference data representing a reference manipulation of a computer generated model of an object by a master user; means for physically guiding a trainee user based on the recorded reference data during a training manipulation of the model of the object by the trainee user; and means for recording assessment data representing an assessment manipulation of the model of the object by the trainee user without guidance.
    Type: Application
    Filed: March 4, 2011
    Publication date: August 1, 2013
    Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, NATIONAL UNIVERSITY HOSPITAL (S) PTE LTD, NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Weimin Huang, Jiang Liu, Jiayin Zhou, Jing Zhang, Beng Hai Lee, Wing Kee Wong, Ngan Meng Tan, Zhou Zhang, Fengshou Yin, Stephen Chang, Chee Kong Chui, Yi Su
  • Publication number: 20130089858
    Abstract: Lateral flow devices and methods of use for a molecular diagnostic assay are provided. The method is suitable for detection or monitoring of targets, including biological, chemical, and material targets that exist in very low concentrations in biological samples. The methods and devices of the present application are amenable to power source-free point of care testing.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 11, 2013
    Inventors: Winston Wong, JR., Stephen Chang-Chi Kao
  • Publication number: 20130057405
    Abstract: A security method and apparatus is disclosed. In one embodiment, a security method comprises storing one or more data points representing an alarm condition in a memory, generating an electronic signal from a motion sensor in response to movement of the door or window, comparing the electronic signal to the data points, and detecting an alarm condition of the door or window if the electronic signal substantially matches the data points.
    Type: Application
    Filed: September 1, 2011
    Publication date: March 7, 2013
    Applicant: Ecolink Intelligent Technology, Inc.
    Inventors: George Seelman, Michael Bailey, Jay Stone, Michael Lamb, Stephen Chang
  • Publication number: 20120323743
    Abstract: In some example embodiments, a system and method are illustrated as including generating an item page that includes widget code and details related to an item for sale. Some example embodiments may include making the widget code available for retrieval from the item page.
    Type: Application
    Filed: August 31, 2012
    Publication date: December 20, 2012
    Inventors: Stephen Chang, Robert Chatwani, Daniel Burkhart
  • Patent number: 8260687
    Abstract: In some example embodiments, a system and method are illustrated as including generating an item page that includes widget code and details related to an item for sale. Some example embodiments may include making the widget code available for retrieval from the item page.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: September 4, 2012
    Assignee: eBay Inc.
    Inventors: Stephen Chang, Robert Chatwani, Daniel Burkhart
  • Publication number: 20100332539
    Abstract: An initial item is grouped into a cluster defined by a query expression applied to a description of the item. Given the initial item, its associated cluster is accessed, and another item is identified based on the initial item's cluster or from a cluster designated as similar to the initial item's cluster. Once identified, the other item is presented as related to the initial item.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Inventors: Sunil Mohan, Roopnath Grandhi, Stephen Chang, Shalini Vikas Agarwal, Manish K. Kalbande, Randall Scott Shoup
  • Publication number: 20100254985
    Abstract: The present invention provides formulations of proteins comprising a variant Fc region that improve the stability in part by reducing the propensisty of such molecules to rapidly aggregate. The invention provides both liquid and lyophilized formulations either of which can be utilized to generate a high protein concentration liquid suitable for administration to a subject. The invention further provides methods of utilizing the formulations of the present invention for therapeutic or prophylactic treatment of diseases and disorders or for diagnostic purposes.
    Type: Application
    Filed: May 6, 2010
    Publication date: October 7, 2010
    Applicant: MEDIMMUNE, LLC
    Inventors: Christian B. ALLAN, William LEACH, Stephen CHANG, Steven BISHOP
  • Publication number: 20100235225
    Abstract: A method, based on autocorrelation techniques, for measuring the relative significance of the systematic versus random components of product sales data. The results of this determination can be used to improve product demand forecast and product seasonal profile determinations. When a product's sales variation is primarily due to systematic patterns, the accuracy of demand predictions and forecasts can be improved by understanding and modeling the underlying pattern. On the other hand, when variations in sales are merely random, these variations can be discounted when determining demand forecasts or product seasonal profiles.
    Type: Application
    Filed: January 12, 2010
    Publication date: September 16, 2010
    Inventors: Arash Bateni, Edward Kim, Philippe Hamel, Stephen Chang
  • Publication number: 20080255962
    Abstract: In some example embodiments, a system and method are illustrated as including generating an item page that includes widget code and details related to an item for sale. Some example embodiments may include making the widget code available for retrieval from the item page.
    Type: Application
    Filed: December 31, 2007
    Publication date: October 16, 2008
    Inventors: Stephen Chang, Robert Chatwani, Daniel Burkhart
  • Publication number: 20080071063
    Abstract: The present invention provides formulations of proteins comprising a variant Fc region that improve the stability in part by reducing the propensisty of such molecules to rapidly aggregate. The invention provides both liquid and lyophilized formulations either of which can be utilized to generate a high protein concentration liquid suitable for administration to a subject. The invention further provides methods of utilizing the formulations of the present invention for therapeutic or prophylactic treatment of diseases and disorders or for diagnostic purposes.
    Type: Application
    Filed: February 2, 2007
    Publication date: March 20, 2008
    Applicant: MedImmune, Inc.
    Inventors: Christian Allan, William Leach, Stephen Chang, Steven Bishop
  • Publication number: 20070048332
    Abstract: The present invention provides liquid formulations of SYNAGIS® or an antigen-binding fragment thereof that immunospecifically bind to a respiratory syncytial virus (RSV) antigen, which formulations exhibit stability, low to undetectable levels of aggregation, and very little to no loss of the biological activities of SYNAGIS® or an antigen-binding fragment thereof, even during long periods of storage. In particular, the present invention provides liquid formulations of SYNAGIS® or an antigen-binding fragment thereof which immunospecifically binds to a RSV antigen, which formulations are substantially free of surfactant, inorganic salts, and/or other common excipients. Furthermore, the invention provides method of preventing, treating or ameliorating symptoms associated with RSV infection utilizing liquid formulations of the present invention.
    Type: Application
    Filed: February 24, 2006
    Publication date: March 1, 2007
    Inventors: Cynthia Oliver, Erica Shane, Benjamin Isaacs, Christian Allan, Stephen Chang
  • Publication number: 20060034827
    Abstract: The present invention provides liquid formulations of SYNAGIS® or an antigen-binding fragment thereof that immunospecifically bind to a respiratory syncytial virus (RSV) antigen, which formulations exhibit stability, low to undetectable levels of aggregation, and very little to no loss of the biological activities of SYNAGIS® or an antigen-binding fragment thereof, even during long periods of storage. In particular, the present invention provides liquid formulations of SYNAGIS® or an antigen-binding fragment thereof which immunospecifically binds to a RSV antigen, which formulations are substantially free of surfactant, inorganic salts, and/or other common excipients. Furthermore, the invention provides method of preventing, treating or ameliorating symptoms associated with RSV infection utilizing liquid formulations of the present invention.
    Type: Application
    Filed: June 13, 2003
    Publication date: February 16, 2006
    Inventors: Cynthia Oliver, Erica Shane, Benjamin Isaacs, Christian Allan, Stephen Chang
  • Publication number: 20050260734
    Abstract: The invention described herein allows the production of recombinant retroviruses (retroviral vector particles) from producer cells which are safer and of higher titer than normal. In addition, methods are provided for making helper cells which, when a recombinant retrovirus genome is introduced to make a producer line, produce particles that are targeted toward particular cell types. Methods are also provided for making recombinant retrovirus systems adapted to infect a particular cell type, such as a tumor, by binding the retrovirus or recombinant retrovirus in the particular cell type. Methods are also provided for producing recombinant retroviruses which integrate in a specific small number of places in the host genome, and for producing recombinant retroviruses from transgenic animals.
    Type: Application
    Filed: July 24, 2002
    Publication date: November 24, 2005
    Inventors: Jack Barber, Douglas Jolly, James Respess, Stephen Chang
  • Patent number: 6818439
    Abstract: Methods are provided for obtaining measurable levels of a protein, nucleic acid molecule, or enzymatic product in a bodily fluid or cells of a human, comprising the step of administering to a human a recombinant retroviral preparation having a titer on HT1080 cells of greater than 105 cfu/ml, wherein the recombinant retroviral preparation is capable of directing the expression of a protein, nucleic acid molecule, or enzyme which generates an enzymatic product, such that measurable levels of the protein, nucleic acid molecule, or enzymatic product may be obtained in the bodily fluid or cells of the human.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: November 16, 2004
    Assignee: Chiron Corporation
    Inventors: Douglas J. Jolly, Stephen Chang, James G. Respess, Nicholas J. DePolo, David Chi-Tang Hsu, Carlos E. Ibanez, Judith Greengard, Lee Will