Patents by Inventor Takaharu Imamura

Takaharu Imamura 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).

  • Tempered glass and laminated glass employing it
    Publication number: 20030031835
    Abstract: A tempered glass having a compressive stress layer formed at the surface and a tensile stress layer formed inside, wherein the glass thickness (t) is from 1.5 to 3.5 mm, and the minimum thickness (a) of the compressive stress layer in the direction of glass thickness is from 0.15 to 0.7 mm.
    Type: Application
    Filed: July 29, 2002
    Publication date: February 13, 2003
    Applicant: Asahi Glass Company, Limited
    Inventors: Shigeyuki Seto, Takaharu Imamura
  • Method for bending glass plates for a laminated glass
    Patent number: 4828598
    Abstract: A method for bending a glass plate for a laminated glass comprises a step of heating at least two glass plates separately at a temperature suitable to conduct bending operation and bending them; a step of gradually cooling each of them; a step of transferring the at least two glass plates onto a bending ring mold in an overlapping state; and a step of heat-shaping the overlapping glass plates on the bending ring mold so that the surfaces of the glass plates are fitted to and are in coincidence with each other.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: May 9, 1989
    Assignee: Asahi Glass Company Ltd.
    Inventors: Takaharu Imamura, Hiroshi Tsuji, Chikao Aruga, Tohru Kawatsura