Patents by Inventor Ushio Maeda

Ushio Maeda 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 and apparatus for separation of stable isotope compound
    Patent number: 6202440
    Abstract: Stable isotope atoms present in the form of stable isotope compounds, for example, 13C present in the form of 13CO, are separated by distillation using a distillation column packed orderly with a formed packing, and preferably by distillation using a distillation column packed with a “promoting-fluid-dispersion type” structured packing.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: March 20, 2001
    Assignee: Nippon Sanso Corporation
    Inventors: Shigeru Hayashida, Katsuyoshi Kuwata, Hiroshi Kawakami, Ushio Maeda