Patents by Inventor Tadashi Tokimoto

Tadashi Tokimoto 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).

  • Method of producing high-purity transparent vitreous silica body
    Patent number: 4113844
    Abstract: A method of producing high-purity transparent vitreous silica body through flame hydrolysis of high-purity silane type gas, comprising forming the width in the sectional direction of the reduction area of said flame so as to be about more than 1.5 times as against the diameter of the formed vitreous silica body, and the length of the reduction area of said flame so as to be about more than 2.5 times as against said diameter, while retaining the head portion of the formed vitreous silica body within the reduction area of said flame to synthesize the high-purity transparent vitreous silica body.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: September 12, 1978
    Assignee: Komatsu Electronci Metals, Co., Ltd.
    Inventors: Tadashi Tokimoto, Kazumasa Kawaguchi, Junji Izawa, Yoshinobu Hiraishi
  • Method of producing high-purity transparent vitreous silica
    Patent number: 4038370
    Abstract: A method of producing high-purity transparent vitreous silica by supplying to a burner a high-purity silane type gas, and an inert gas, hydrogen gas and oxygen gas to effect the flame hydrolysis, comprising growing highly pure transparent vitreous silica at a controlled atmosphere of said flame that may increase the oxygen defect concentration of the vitreous silica, and thereafter heat-treating said formed body.
    Type: Grant
    Filed: September 23, 1975
    Date of Patent: July 26, 1977
    Assignee: Komatsu Electronic Metals Co., Ltd.
    Inventors: Tadashi Tokimoto, Yoshinobu Hiraishi