Patents by Inventor Masaro Fukui

Masaro Fukui 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).

  • Structure of lead terminal of electronic device
    Patent number: 5270492
    Abstract: A small bore or a cut portion is formed in a leading end portion of a lead terminal extended from a package main body. A gas produced when the leading end portion is contacted with and soldered to a land provided on a printed wiring board is allowed to escape through the small bore or the cut portion and, therefore, solder is easy to enter between the lead terminal and the land, which improves the soldering performance of the lead terminal. Also, the provision of the small bore or cut portion increases the area of a peripheral portion of the lead terminal to be in contact with the solder to thereby increasing the strength of the soldering.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: December 14, 1993
    Assignee: Rohm Co., LTD.
    Inventor: Masaro Fukui