Patents by Inventor Choong M. Cho

Choong M. 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).

  • Method of manufacturing a waterproof paper container
    Patent number: 5002523
    Abstract: A method of manufacturing a waterproof paper container which is a thick paper tube made of multiple paper layers by adhering an adhesive and coating a thermofusible synthetic resin on the surface of the adhesive.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: March 26, 1991
    Inventor: Choong M. Cho
  • Water proof paper canister
    Patent number: 4595119
    Abstract: Present invention relates to water proof paper canister, by giving the water proof characteristics to the surface of the circumference, top and bottom of tubular canister made of many fold thick paper, and forming the contents such as ammunition etc. stored in canister can be protected against permeation of moisture, formed to be able to relieve any shock from the top and bottom of canister.
    Type: Grant
    Filed: June 13, 1985
    Date of Patent: June 17, 1986
    Inventor: Choong M. Cho