Patents by Inventor Yong-Deok TARK

Yong-Deok TARK 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: 10960498
    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 includes: (a) pure silver consisting of silver and further components; or (b) doped silver consisting of silver, at least one doping element, and further components; or (c) a silver alloy consisting of silver, palladium and further components; or (d) a silver alloy consisting of silver, palladium, gold, and further components; or (e) a doped silver alloy consisting of silver, palladium, gold, at least one doping element, and further components, wherein the individual amount of any further component is less than 30 wt.-ppm and the individual amount of any doping element is at least 30 wt.-ppm, and the coating layer is a single-layer of gold or palladium or a double-layer comprised of an inner layer of nickel or palladium and an adjacent outer layer of gold.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 30, 2021
    Assignees: HERAEUS MATERIALS SINGAPORE PTE., LTD., HERAEUS DEUTSCHLAND GMBH & CO. KG
    Inventors: Il Tae Kang, Yong-Deok Tark, Mong Hyun Cho, Jong Su Kim, Hyun Seok Jung, Tae Yeop Kim, Xi Zhang, Murali Sarangapani
  • Publication number: 20180345421
    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 includes: (a) pure silver consisting of silver and further components; or (b) doped silver consisting of silver, at least one doping element, and further components; or (c) a silver alloy consisting of silver, palladium and further components; or (d) a silver alloy consisting of silver, palladium, gold, and further components; or (e) a doped silver alloy consisting of silver, palladium, gold, at least one doping element, and further components, wherein the individual amount of any further component is less than 30 wt.-ppm and the individual amount of any doping element is at least 30 wt.-ppm, and the coating layer is a single-layer of gold or palladium or a double-layer comprised of an inner layer of nickel or palladium and an adjacent outer layer of gold.
    Type: Application
    Filed: September 16, 2016
    Publication date: December 6, 2018
    Applicants: Heraeus Materials Singapore Pte., Ltd., Heraeus Oriental HiTec Co., Ltd.
    Inventors: Il Tae Kang, Yong-Deok Tark, Mong Hyun Cho, Jong Su Kim, Hyun Seok Jung, Tae Yeop Kim, Xi Zhang, Murali Sarangapani
  • Publication number: 20170256517
    Abstract: A bonding wire and a method of manufacturing the bonding wire are provided. The bonding wire contains 90.0 to 99.0 wt % of silver (Ag); 0.2 to 2.0 wt % of gold (Au); 0.2 to 4.0 wt % of palladium (Pd), platinum (Pt), rhodium (Rh), or a combination thereof; 10 to 1000 ppm of dopants; and inevitable impurities. In the wire, the ratio of (a)/(b) is 3 to 5, in which (a) represents the amount of crystal grains having <100> orientation in crystalline orientations <hkl> in a wire lengthwise direction and (b) represents the amount of crystal grains having <111> orientation in crystalline orientations <hkl> in the wire lengthwise direction.
    Type: Application
    Filed: June 29, 2015
    Publication date: September 7, 2017
    Inventors: Ki Ho KIM, Yong-Deok TARK, Il Tae KANG, Byoung Gil KIM, Tae Yeop KIM
  • Publication number: 20140063762
    Abstract: A bonding wire according to the invention contains a core having a surface, in which the core contains silver as a main component and at least one element selected from gold, palladium, platinum, rhodium, ruthenium, nickel, copper, and iridium. The wire exhibits at least one of the following properties: I. an average size of crystal grains of the core is between 0.8 ?m and 3 ?m, II. the amount of crystal grains having an orientation in the <001> direction in a wire cross section is in a range of 10-20%, III. the amount of crystal grains having an orientation in the <111> direction in a wire cross section is in a range of 5-15%, and IV. the total amount of crystal grains having orientations in the <001> and <111> directions in a wire cross section is in a range of 15-40%.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Applicant: HERAEUS MATERIALS TECHNOLOGY GMBH & CO. KG
    Inventors: Jae-Sung RYU, Eun-Kyun CHUNG, Yong-Deok TARK