Patents by Inventor Cheol-seung Cho

Cheol-seung Cho 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).

  • Engine using compressed air
    Patent number: 5491977
    Abstract: An engine (32) driven by compressed air, including an electric motor (36) driven by a battery (B), a compressor for generating the compressed air by use of a drive power of the electric motor (36), an intake manifold (40) connected with an outlet of the compressor with the intake manifold (40), a crank shaft having four separate crank pins being connected to a piston in the cylinder by a connecting rod, and a cam shaft connected with the crank shaft by a belt or chain.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: February 20, 1996
    Assignee: Cheol-seung Cho
    Inventors: Cheol-seung Cho, Kwang-soo Han