Patents by Inventor Tetsuo Komaki

Tetsuo Komaki 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).

  • Waterproof watch case
    Patent number: 4117658
    Abstract: A waterproof watch case construction depends on gaskets alone for waterproofing and is free of cement. The construction is such that a broken crystal can be readily replaced, and the watch case itself can be of any shape, including square, ovoid and hexagonal, as well as circular. The watch crystal is located positively by means of a bezel and a ring which compress a gasket both axially and radially against the watch crystal.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: October 3, 1978
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Tsutomu Miyasaka, Yoshiaki Fujimori, Shigeru Matsui, Tetsuo Komaki