Patents by Inventor Kouji Takei

Kouji Takei 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: 11062731
    Abstract: Approaches to pre-forming solder bumps, such as for use in electrically connecting a head slider and a suspension assembly for a hard disk drive, involves applying a height stabilizer plate over a shared solder paste applied over a substrate housing electrode pads, and reflowing the solder paste with the plate applied to create solder bumps electrically coupled to the pads. Use of such a plate functions to stabilize and contain the solder paste and create uniform solder bumps across the series of pads, where the plate may be composed of a heat-resistant and anti-solder-wetting material. The solder bump pre-forming techniques generally enable solder bonding of extremely small electrical interconnection pads.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: July 13, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventors: Takuya Satoh, Yuhsuke Matsumoto, Hiroyasu Tsuchida, Kouji Takei