Patents by Inventor Hikaru Yamagata

Hikaru Yamagata 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).

  • Biaxially oriented polyester film, process for producing the same, and magnetic recording medium
    Patent number: 6835461
    Abstract: The object of this invention is to provide a biaxially oriented polyester film suitable as a base film for high density magnetic recording media, small in track deviation and excellent in traveling durability and preservability, and to provide a production method thereof. The object of this invention can be achieved by a biaxially oriented polyester film, characterized in that the dimensional change rate (A) in the transverse direction of the film is in a range of −0.3 to 0% when the film is allowed to stand at 49° C. and 90% RH for 72 hours, while being loaded with 32 MPa in the machine direction.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: December 28, 2004
    Assignee: Toray Industries, Inc.
    Inventors: Hikaru Yamagata, Masaaki Kotoura, Hirofumi Hosokawa, Tetsuya Tsunekawa
  • Culturing apparatus
    Patent number: 4951415
    Abstract: A culturing apparatus including a culturing tank for culturing cells, organs or tissue strips of a plant, internally therein, and a cutting device for cutting cultured plant bodies arranged within the culturing tank, wherein a push-out means for urging the plant bodies against the cutting device is further provided or the cutting means is made movable so as to be urged against the plant bodies.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: August 28, 1990
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Waichiro Kawarabayashi, Koichi Matsubara, Toshihiro Yoshioka, Hikaru Yamagata, Shigeru Takahashi, Yukimasa Hirata, Yoshiko Shirane