Patents by Inventor Noboru Hasaka

Noboru Hasaka 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 forming median crack in substrate and apparatus for forming median crack in substrate
    Patent number: 7723212
    Abstract: A method for forming a median crack and an apparatus for forming a median crack are provided, where the formation of a deep, straight median crack is possible, and an excellent broken surface of a brittle substrate can be gained as a result of breaking.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: May 25, 2010
    Assignee: Mitsuboshi Diamond Industrial Co., Ltd
    Inventors: Koji Yamamoto, Noboru Hasaka
  • Method For Forming Median Crack In Substrate And Apparatus For Forming Median Crack In Substrate
    Publication number: 20080194079
    Abstract: A method for forming a median crack and an apparatus for forming a median crack are provided, where the formation of a deep, straight median crack is possible, and an excellent broken surface of a brittle substrate can be gained as a result of breaking.
    Type: Application
    Filed: July 29, 2005
    Publication date: August 14, 2008
    Inventors: Koji Yamamoto, Noboru Hasaka
  • Method of and an Apparatus for Forming a Perpendicular Crack in a Brittle Substrate
    Publication number: 20080135532
    Abstract: The forming of a heated spot (10) by using a laser beam irradiated to a brittle substrate along a predetermined scribing line (S) and the ejecting of a cooling medium, after interruption of irradiation of laser beam, to impinge on the spot to thereby form a cooled spot (20) constitute a unit operation to be repeated. The cooled spot overlapping the heated spot (10) that has a longitudinal center line (b) crossing the scribing line (S) at a right angle serves to restore thermal equilibrium in and around the spots while forming unit cracks (n) continued one from another to form a linear crack (E,U) perpendicular to the brittle substrate surface.
    Type: Application
    Filed: April 27, 2005
    Publication date: June 12, 2008
    Applicant: MITSUBOSHI DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Noboru Hasaka, Toru Kumagai, Koji Yamamoto