Patents by Inventor Naokatsu Tsuda

Naokatsu Tsuda 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 manufacturing lead grid plates for batteries
    Patent number: 3959016
    Abstract: A method for manufacturing a lead grid plate for batteries comprising the first process of preparing a rolled lead alloy plate measuring 0.5 to 1 mm in thickness; the second process of press punching the rolled lead alloy plate by means of a metal mold to obtain a lead grid plate, the width of the grid forming members of the plate measuring about the same as the thickness of the plate; and the third process of hardening said lead grid plate through a heat treatment with or without a prior shape correcting process carried out before the third process.
    Type: Grant
    Filed: December 24, 1974
    Date of Patent: May 25, 1976
    Assignee: The Furukawa Electric Co., Ltd.
    Inventor: Naokatsu Tsuda