Patents by Inventor Heihachiro Fujii

Heihachiro Fujii 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).

  • Apparatus for disposal of rubber waste
    Patent number: 3997407
    Abstract: A method and apparatus for disposal of rubber wastes is provided wherein rubber wastes such as scrap tires are dry-distilled in a vertical dry distillation retort of an internal heating type having a rotary discharge chute with a water seal, valuable substances contained in the rubber wastes, such as carbon black and oil, are effectively recovered and dry-distilled gas is used as a heat source for the dry distillation of the rubber wastes.
    Type: Grant
    Filed: September 3, 1975
    Date of Patent: December 14, 1976
    Assignee: Fuji Kasui Engineering Co., Ltd.
    Inventors: Heihachiro Fujii, Shiro Nebashi, Yoshimasa Zaitsu