Patents by Inventor Tokuo Oike

Tokuo Oike 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 hydrogen chloride
    Patent number: 6540973
    Abstract: The process according to the invention comprises bringing gaseous hydrogen chloride in a non-condensable gas into contact with an absorbing medium selected from water or a dilute aqueous hydrogen chloride solution in an absorption column to cause the medium to absorb the gaseous hydrogen chloride, and subjecting the resultant absorbed solution to distillation in the presence of a salt having a salting-out effect to produce anhydrous hydrogen chloride.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: April 1, 2003
    Assignee: Toyo Engineering Corporation
    Inventors: Masakazu Sasaki, Tomomichi Tomita, Tokuo Oike, Yuzuru Yanagisawa