Patents by Inventor Derek Chang

Derek 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: 20240131595
    Abstract: A processing machine (10) for building an object (11) from powder (12) includes a build platform (26A); a powder supply assembly (18) that deposits the powder (12) onto the build platform (26A) to form a powder layer (13); and an energy system (22) that directs an energy beam (22D) at a portion of the powder (12) on the build platform (26A) to form a portion of the object (11). The powder supply assembly (18) can include (i) a powder container (640A) that retains the powder (12); (ii) a supply outlet (639) positioned over the build platform (26A); and (ii) a flow control assembly (642) that selectively controls the flow of the powder (12) from the supply outlet (639).
    Type: Application
    Filed: June 30, 2020
    Publication date: April 25, 2024
    Inventors: Alton Hugh Phillips, Joseph P. Rossi, Johnathan Agustin Marquez, Yoon Jung Jeong, Lexian Guo, Patrick Shih Chang, Eric Peter Goodwin, Michael Birk Binnard, Brett William Herr, Matthew Parker-McCormick Bjork, Paul Derek Coon, Motofusa Ishikawa
  • Publication number: 20240084282
    Abstract: Provided are modified arginine deiminase (ADI) proteins, including ADI proteins that comprise one or more substitutions which increase expression in bacteria as insoluble and refoldable inclusion bodies. Also provided are methods of producing the modified ADI proteins, compositions comprising the ADI proteins, and related methods of treating arginine-dependent and related diseases such as cancer.
    Type: Application
    Filed: August 31, 2023
    Publication date: March 14, 2024
    Inventors: Richard E. Showalter, Robert J. Almassy, James A. Thomson, Wes Sisson, Wei-Jong Shia, Li-Chang (Jason) Chen, Derek Lee
  • Publication number: 20190283247
    Abstract: Systems and methods and media for managing biomechanical achievements are provided. An exosuit or any other suitable sensor assembly worn by a user can be utilized by a system to monitor several movement factors that may characterize the user's movement and any changes in the user's movement with a high degree of specificity that may enable various system algorithms and/or models to predict or otherwise determine one or more biomechanical achievements of the user, such as recovery from a particular type of event (e.g., surgery or therapy procedure) and/or distance traveled (e.g., without using any global positioning system capabilities). In addition, an exosuit can provide useful feedback in response to such determinations.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Inventors: Andrew Robert Chang, Derek Chang, Daniel Le Ly, Ray Franklin Cowan
  • Publication number: 20190282131
    Abstract: Systems and methods and media for managing biomechanical achievements are provided. An exosuit or any other suitable sensor assembly worn by a user can be utilized by a system to monitor several movement factors that may characterize the user's movement and any changes in the user's movement with a high degree of specificity that may enable various system algorithms and/or models to predict or otherwise determine one or more biomechanical achievements of the user, such as recovery from a particular type of event (e.g., surgery or therapy procedure) and/or distance traveled (e.g., without using any global positioning system capabilities). In addition, an exosuit can provide useful feedback in response to such determinations.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 19, 2019
    Inventors: Andrew Robert Chang, Derek Chang, Daniel Le Ly, Ray Franklin Cowan
  • Patent number: 10419011
    Abstract: An example timing error measurement system includes a digital-to-analog converter (DAC) having a plurality of current steering circuits, the DAC responsive to a clock signal, a one-bit comparator coupled to a differential output of the DAC, a filter coupled to an output of the one-bit comparator, control logic coupled to an output of the filter, and a delay line coupled to an output of the control logic. An output of the delay line is coupled to an input of the one-bit comparator. The delay line is configured to delay the clock signal.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: September 17, 2019
    Assignee: XILINX, INC.
    Inventors: Roberto Pelliconi, Christophe Erdmann, Derek Chang
  • Publication number: 20070192661
    Abstract: An improved Automatic Test Equipment (ATE) in which Instruction Memory and a Vector Memory are combined together into a tester pattern memory in order to share the same memory space. As such, reducing the memory, size, and cost of the Automatic Test Equipment.
    Type: Application
    Filed: October 18, 2006
    Publication date: August 16, 2007
    Inventors: Edward C. Chang, Meimei Chang, Deirdre McGlashan, Derek Chang
  • Publication number: 20050007374
    Abstract: A z-unit for a three-dimensional graphics system is provided having a read buffer and a write buffer. The read buffer stores read requests and the write buffer stores write requests. The read and write requests correspond to atomic operations for z-buffer manipulations. Upon the receipt of a read request, the address of the read request is compared to each of the addresses of the write requests. If a match occurs then the read buffer is flushed until a first read request with the matched address occurs. The write buffer is then flushed and all the write requests within the write buffer is serviced. The read buffer is again flushed until all the read requests within the read buffer is serviced.
    Type: Application
    Filed: May 28, 2004
    Publication date: January 13, 2005
    Inventors: Dong-Ying Kuo, Derek Chang