Patents by Inventor Toshihiro Ohishi

Toshihiro Ohishi 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 of producing optical fiber preform
    Patent number: 6895783
    Abstract: A plurality of glass particles synthesizing burners are arranged at a predetermined burner interval opposite to a rotating starting rod. The starting rod and the glass particles synthesizing burners are relatively parallely reciprocally moved, and the soot deposition is conducted. A reciprocating speed v(mm/minute), axis rotating speed r (rpm), and burner interval L (mm) are set so that a value A expressed by the expression A=(r/v)×L is in a range 40?A?8.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: May 24, 2005
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshihiro Ohishi, Yuichi Ohga, Motonori Nakamura
  • Method of producing optical fiber preform
    Publication number: 20020081377
    Abstract: A plurality of glass particles synthesizing burners are arranged at a predetermined burner interval opposite to a rotating starting rod. The starting rod and the glass particles synthesizing burners are relatively parallely reciprocally moved, and the soot deposition is conducted. A reciprocating speed v(mm/minute), axis rotating speed r (rpm), and burner interval L (mm) are set so that a value A expressed by the expression A=(r/v)×L is in a range 40≧A≧8.
    Type: Application
    Filed: September 21, 2001
    Publication date: June 27, 2002
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Toshihiro Ohishi, Yuichi Ohga, Motonori Nakamura