Patents by Inventor Tomotsugu Katoh

Tomotsugu Katoh 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).

  • Patent number: 8314825
    Abstract: A laser beam direct imaging apparatus and an imaging method which can precisely determine a back-surface-side position with respect to a front-surface-side position even if any kind of photosensitive material is used. In the laser direct imaging apparatus, a laser beam is deflected toward a main scanning direction (X-axis direction) while a workpiece mounted on a table is moved in a sub-scanning direction (Y-axis direction) so that a pattern is imaged on the surface of the workpiece. Hollow pins are disposed on the table so that the tips of the hollow pins 20 project over the surface of the table by a predetermined distance. The workpiece is sucked onto the table so that indentations (indentations by the tips of the hollow pins) are formed on the back surface of the workpiece. When a pattern is imaged on the back surface, imaging is performed with reference to the indentations.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: November 20, 2012
    Assignee: Hitachi Via Mechanics, Ltd.
    Inventors: Yoshitatsu Naito, Mitsuhiro Suzuki, Tomotsugu Katoh
  • Publication number: 20090086009
    Abstract: A laser beam direct imaging apparatus and an imaging method which can precisely determine a back-surface-side position with respect to a front-surface-side position even if any kind of photosensitive material is used. In the laser direct imaging apparatus, a laser beam is deflected toward a main scanning direction (X-axis direction) while a workpiece mounted on a table is moved in a sub-scanning direction (Y-axis direction) so that a pattern is imaged on the surface of the workpiece. Hollow pins are disposed on the table so that the tips of the hollow pins 20 project over the surface of the table by a predetermined distance. The workpiece is sucked onto the table so that indentations (indentations by the tips of the hollow pins) are formed on the back surface of the workpiece. When a pattern is imaged on the back surface, imaging is performed with reference to the indentations.
    Type: Application
    Filed: August 14, 2008
    Publication date: April 2, 2009
    Applicant: Hitachi Via Mechanics, Ltd.
    Inventors: Yoshitatsu Naito, Mitsuhiro Suzuki, Tomotsugu Katoh