Patents by Inventor Tadahiro Sakamoto

Tadahiro Sakamoto 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).

  • EMBEDDING METHOD AND PROCESSING SYSTEM
    Publication number: 20240153818
    Abstract: An embedding method includes: preparing a substrate including an insulating film formed with a recess and a metal film exposed from a bottom of the recess; embedding a first ruthenium film from the bottom of the recess to a middle of the recess by CVD using a ruthenium-containing gas while heating the substrate to a first temperature; and embedding a second ruthenium film over the first ruthenium film in the recess by CVD using the ruthenium-containing gas while heating the substrate to a second temperature lower than the first temperature.
    Type: Application
    Filed: March 9, 2022
    Publication date: May 9, 2024
    Inventors: Masato SAKAMOTO, Tadahiro ISHIZAKA, Issei TAKEYASU, Kohichi SATOH
  • Power converting system multiplexed with voltage dividing transformers, the voltage transformers, and controller for the system
    Patent number: 6169677
    Abstract: A power converting system has power converters for converting a direct current into an alternating current, a DC power source arranged on the DC side of the power converters, and voltage dividing transformers having windings whose first ends are connected to the power converters phase by phase and whose second ends are joined together and connected to a load phase by phase. Also provided is a controller for controlling the power converting system.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: January 2, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Kitahata, Hiroyuki Nishikawa, Hiroshi Uchino, Takashi Fujita, Takahisa Kageyama, Takeo Kanai, Akira Kawaguchi, Tadahiro Sakamoto