Patents by Inventor Katumi Kojima

Katumi Kojima 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 treating waste water containing radioactive substances
    Patent number: 4161447
    Abstract: A process for treating waste water containing radioactive substances comprising treating the waste water by reverse osmosis in the presence of at least one organic surfactant selected from the group consisting of anionic surfactants, cationic surfactants and nonionic surfactants.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: July 17, 1979
    Assignees: Daicel Ltd., Mitsui Shipbuilding & Engineering Co., Ltd.
    Inventor: Katumi Kojima
  • Method for the manufacture of fruit wines from fruit juices of low sugar content
    Patent number: 3979521
    Abstract: Fruit wines excellent in taste and bouquet can be manufactured from fruit juices of low sugar content by subjecting the crude fruit juices to a semi-permeable membrane separation process (reverse osmosis or ultrafiltration), thereby to concentrate the crude fruit juices. The time periods required for fermenting the concentrated fruit juices and aging the wines made therefrom are considerably shorter in comparison with other wine-making processes.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: September 7, 1976
    Assignee: Daicel Ltd.
    Inventors: Yasuhiro Sakaguchi, Kiyoshi Ishii, Katumi Kojima