Patents by Inventor Tadashi Ohkawa

Tadashi Ohkawa 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).

  • Corynebacterium SP. N having decomposability for ethanolamines
    Patent number: 5686291
    Abstract: By utilizing Corynebacterium sp. N according to the present invention, massive amounts of the waste fluid containing high concentration ethanolamines can effectively be treated without causing an environmental pollution. According to the present invention, it is possible to treat the waste fluid containing ethanolamines in a small-scale manner. The apparatus for treating the waste fluid according to the present invention can readily be installed, and the initial and running costs such as a maintenance of the apparatus are inexpensive.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: November 11, 1997
    Assignees: Kabushiki Kaisha Neos, Nachi-Fujikoshi Corp.
    Inventors: Tadashi Ohkawa, Hiromi Aoki, Keizo Aiba, Takashi Yoneshima, Koji Nakatani, Goichi Sugasawa