Patents by Inventor Hajime Komaki

Hajime Komaki 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).

  • OPTICAL COUPLER AND VISIBLE LIGHT SOURCE MODULE
    Publication number: 20240126015
    Abstract: This optical coupler for coupling a plurality of visible light beams having different wavelengths includes: a substrate made of a material different from lithium niobate; and an optical coupling function layer formed on a main surface of the substrate. The optical coupling function layer includes: two multimode-interference-type optical coupling parts; optical-input-side waveguides and an optical-output-side waveguide connected to one multimode-interference-type optical coupling part, and optical-input-side waveguides and an optical-output-side waveguide connected to the other multimode-interference-type optical coupling part. The multimode-interference-type optical coupling parts, the optical-input-side waveguides, and the optical-output-side waveguides are made of a lithium niobate film.
    Type: Application
    Filed: October 6, 2023
    Publication date: April 18, 2024
    Applicant: TDK CORPORATION
    Inventors: Hajime UTSUNOMIYA, Yasuhiro TAKAGI, Hiroki HARA, Atsushi SHIMURA, Jiro YOSHINARI, Takashi KIKUKAWA, Tsuyoshi KOMAKI, Hideaki FUKUZAWA
  • Method for synthesizing trioxane
    Patent number: 4563536
    Abstract: A method for synthesizing trioxane by heating and reacting an aqueous formaldehyde solution in the presence of a heteropolyacid. As the heteropolyacid, there is preferably used one that contains, as a coordinating element or coordinating elements, W, Mo, V or Nb alone or two or more of them.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: January 7, 1986
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Koichi Yoshida, Toshiyuki Iwaisako, Junzo Masamoto, Katsuhiko Hamanaka, Hajime Komaki
  • Method for synthesizing trioxane
    Patent number: 4381397
    Abstract: A method for synthesizing trioxane by heating and reacting an aqueous formaldehyde solution in the presence of a heteropolyacid. As the heteropolyacid, there is preferably used one that contains, as a coordinating element or coordinating elements, W, Mo, V or Nb alone or two or more of them.
    Type: Grant
    Filed: February 11, 1981
    Date of Patent: April 26, 1983
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Koichi Yoshida, Toshiyuki Iwaisako, Junzo Masamoto, Katsuhiko Hamanaka, Hajime Komaki