Patents by Inventor Keizoo Ukita

Keizoo Ukita 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).

  • Process for producing coke
    Patent number: 4957596
    Abstract: In a process for producing a coke by carbonization of a starting coal, the improvement wherein a coal containing a bulk density improving agent composed of a high-molecular organic compound capable of forming a hydrous gel in the presence of moisture is used as the starting coal.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: September 18, 1990
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Keizoo Ukita, Tetsuo Hamaguchi, Masaaki Inoue