Patents by Inventor Tsumoru Masui

Tsumoru Masui 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 and apparatus for detecting a crystallographic axis of a single crystal ingot for "OF" determination
    Patent number: 5187729
    Abstract: A method and an apparatus for detecting a crystallographic axis of a single crystal ingot based on the X-ray diffractometry, wherein and whereby a crystal habit line of the single crystal ingot is optically detected first, and thereafter making use of the geographical relation of the crystallographic axis to the crystal habit line, the crystallographic axis is detected with improved economy of time and labor and with improved precision, so that the orientation flat (OF) is made in the right place and direction.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: February 16, 1993
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Hiroyaki Ibe, Seiichi Terashima, Tsumoru Masui