Patents by Inventor Tetsunosuke Shimizu

Tetsunosuke Shimizu 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).

  • Safety lighter
    Patent number: 5913674
    Abstract: A safety lighter includes two wheel axles which can be easily and firmly engaged to two sides of the spark wheel respectively, so as to properly support the spark wheel on top of the flint and to ensure the spark wheel being absolutely driven by the two wheel axles. Since the spark wheel is supported by the two wheel axles on both side respectively, the two wheel axles will substantially prevent the spark wheel to move aside, so that the spark wheel can permanently remain in a central position between the two wheel axles.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: June 22, 1999
    Inventor: Tetsunosuke Shimizu