Patents by Inventor Takashi Tsurue

Takashi Tsurue 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 preparing magnetostrictive material in microgravity environment
    Patent number: 6508854
    Abstract: A method of preparing a magnetostrictive material, including the steps of: (a) forming a melt of metals having a composition corresponding to the magnetostrictive material; (b) subjecting the melt to a micro-gravity environment; and (c) cooling the melt in the micro-gravity environment at a rate of at least 50° C. per second, while applying a magnetic field to the melt, to solidity the melt.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: January 21, 2003
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Hideki Minagawa, Takeshi Okutani, Hideaki Nagai, Takashi Tsurue, Yoshinori Nakata, Keiji Kamada
  • Method of fabricating crystal thin plate under micro-gravity environment
    Patent number: 6497762
    Abstract: A method of fabricating a crystal thin plate of a substance capable of forming a crystal, wherein a molten layer of the substance formed on a support is cooled in the atmosphere of an inert gas or in vacuum at a rate of 10-300° C. per second under a micro-gravity environment to solidify and crystallize the molten layer. The cooling is performed by contacting a portion of the support with a cooling medium.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: December 24, 2002
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Takeshi Okutani, Hideki Minagawa, Yoshinori Nakata, Hideaki Nagai, Masaaki Suzuki, Takashi Tsurue, Yoshiho Ito
  • Method of preparing magnetostrictive material in microgravity environment
    Publication number: 20020029823
    Abstract: A method of preparing a magnetostrictive material, including the steps of:
    Type: Application
    Filed: December 21, 2000
    Publication date: March 14, 2002
    Inventors: Hideki Minagawa, Takeshi Okutani, Hideaki Nagai, Takashi Tsurue, Yoshinori Nakata, Keiji Kamada
  • Method of preparing crystalline or amorphose material from melt
    Patent number: 6235109
    Abstract: A method of preparing a crystalline or amorphous material, wherein a droplet of a melt of a metal-containing material is cooled in the atmosphere of an inert gas or in vacuum and in a microgravity environment to solidify the droplet. The cooling is performed by impingement of the droplet prior to solidification against a cooling surface.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: May 22, 2001
    Assignees: Secretary of Agency of Industrial Science and Technology
    Inventors: Takeshi Okutani, Hideaki Nagai, Hideki Minagawa, Yoshinori Nakata, Takashi Tsurue, Masaki Orihashi