Patents by Inventor Kazuharu Hojo

Kazuharu Hojo 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 for oil-extracting treatment of wastes
    Patent number: 5426259
    Abstract: In a method for oil-extracting treatment of wastes for extracting oil by heating wastes contained in a waste containing chamber in a manner to be shut off from air, an inert gas is injected into the waste containing chamber after termination of thermal decomposition of the wastes to force out the combustible gas within said waste containing chamber and said waste containing chamber is then opened, so as to prevent an explosion due to mixing of the residual combustible gas within the waste containing chamber and air after the termination of thermal decomposition of the wastes.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: June 20, 1995
    Assignee: Hojo Co., Ltd.
    Inventors: Kazuharu Hojo, Toshio Koguchi