Patents by Inventor Hui-Kai Chang

Hui-Kai 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).

  • MAGNETORESISTIVE RANDOM ACCESS MEMORY
    Publication number: 20240099154
    Abstract: A magnetoresistive random access memory (MRAM) device includes a first array region and a second array region on a substrate, a first magnetic tunneling junction (MTJ) on the first array region, a first top electrode on the first MTJ, a second MTJ on the second array region, and a second top electrode on the second MTJ. Preferably, the first top electrode and the second top electrode include different nitrogen to titanium (N/Ti) ratios.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 21, 2024
    Applicant: UNITED MICROELECTRONICS CORP
    Inventors: Hui-Lin Wang, Si-Han Tsai, Dong-Ming Wu, Chen-Yi Weng, Ching-Hua Hsu, Ju-Chun Fan, Yi-Yu Lin, Che-Wei Chang, Po-Kai Hsu, Jing-Yin Jhang
  • Magnetoresistive random access memory structure
    Patent number: 11917923
    Abstract: A magnetoresistive random access memory (MRAM) structure, including a substrate and multiple MRAM cells on the substrate, wherein the MRAM cells are arranged in a memory region adjacent to a logic region. An ultra low-k (ULK) layer covers the MRAM cells, wherein the surface portion of ultra low-k layer is doped with fluorine, and dents are formed on the surface of ultra low-k layer at the boundaries between the memory region and the logic region.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: February 27, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Ching-Hua Hsu, Si-Han Tsai, Shun-Yu Huang, Chen-Yi Weng, Ju-Chun Fan, Che-Wei Chang, Yi-Yu Lin, Po-Kai Hsu, Jing-Yin Jhang, Ya-Jyuan Hung
  • Transparent address translation methods
    Publication number: 20060268863
    Abstract: An address translation method for a LAN (local area network) node using a real Internet protocol (IP) address to deliver and receive transparent application layer packets. First, the IP address of the local node equivalent to the WAN IP address of the router is assigned. Thereafter, the router masquerades ARP responses when the local node looks up MAC addresses of certain destinations, and rewrites the data-link layer header of packets transferred to and from the local node, such that application layer communications are deemed transparent.
    Type: Application
    Filed: October 28, 2005
    Publication date: November 30, 2006
    Inventors: Hui-Kai Chang, Cong-Yu Xu, Hung-Chih Chan