Patents by Inventor Mariyappan DHAYALAN

Mariyappan DHAYALAN 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: 20250015037
    Abstract: A ball-bond arrangement comprising a bond pad of a semiconductor device and a wire ball-bonded to the bond pad, wherein the wire extending from the bonded ball has a diameter of 15 to 50 ?m, and comprises a silver-based wire core with a surface, the wire core having a coating layer superimposed on its surface, wherein the coating layer is a double-layer comprised of a 1 to 40 nm thick inner layer of palladium or nickel and an adjacent 20 to 500 nm thick outer layer of gold, and wherein the surface of the bonded ball has a gold coverage of 70 to 100%.
    Type: Application
    Filed: November 23, 2021
    Publication date: January 9, 2025
    Inventors: Yee Weon LIM, Murali SARANGAPANI, Mariyappan DHAYALAN, Shern Jiang CHING, Mei Hoe CHONG, Miew Wan LO, Chee Chow TAN, Yean Mee PUN, Sungsig KANG
  • Publication number: 20240084472
    Abstract: A wire comprising a wire core with a surface, the wire core having a coating layer superimposed on its surface, wherein the wire core itself is a silver-based wire core, wherein the coating layer is a double-layer comprised of a 1 to 100 nm thick inner layer of nickel or palladium and an adjacent 1 to 250 nm thick outer layer of gold, characterized in that the wire exhibits a total carbon content of ?40 wt.-ppm.
    Type: Application
    Filed: February 5, 2021
    Publication date: March 14, 2024
    Inventors: Murali SARANGAPANI, Yee Weon LIM, Wai Khee SEE THO, Mariyappan DHAYALAN, Chee Chow TAN, Juergen SCHARF, Sungsig KANG