Patents by Inventor Yoshitsugu Ohigashi

Yoshitsugu Ohigashi 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 for cutting a single crystal ingot
    Patent number: 7228855
    Abstract: The object of the present invention is to provide a method whereby it is possible to cut a single crystal ingot comparatively accurately while allowing resulting slices to have a flat surface, and to lengthen the life of the blade more than would be possible with conventional methods. A single crystal ingot 10a is arranged below a straightly running portion 18a of the blade which is made to run endlessly along a circuit such that the longitudinal axis of ingot 10a crosses at right angles with the straightly running portion 18a of the blade, thereby enabling the straightly running portion 18a of the blade to cut the ingot 10a perpendicularly.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: June 12, 2007
    Assignee: Sumco Corporation
    Inventors: Masahiko Yamasaki, Yoshitsugu Ohigashi
  • Method for cutting a single crystal ingot
    Publication number: 20060174862
    Abstract: The object of the present invention is to provide a method whereby it is possible to cut a single crystal ingot comparatively accurately while allowing resulting slices to have a flat surface, and to lengthen the life of the blade more than would be possible with conventional methods. A single crystal ingot 10a is arranged below a straightly running portion 18a of the blade which is made to run endlessly along a circuit such that the longitudinal axis of ingot 10a crosses at right angles with the straightly running portion 18a of the blade, thereby enabling the straightly running portion 18a of the blade to cut the ingot 10a perpendicularly.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 10, 2006
    Inventors: Masahiko Yamasaki, Yoshitsugu Ohigashi