Patents by Inventor Norio Yoshizaki

Norio Yoshizaki 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).

  • Publication number: 20070144964
    Abstract: The present invention relates to a mixed liquid separating apparatus for separating a particular substance from a mixed liquid containing at least two kinds of substances C and O of which follow-rotating property is different. It comprises a cylindrical outer member 1, a rod-shaped inner member 2 and a driving means 3. The outer member 1 has an inducing port 11 for inducing the mixed liquid at one end thereof, and an expelling port 16 for expelling the separated particular substance O at other end thereof. The inner member 2 is disposed coaxially with said outer member 1 to be relatively rotatable thereto. The driving means 3 relatively rotates said outer member 1 and said inner member 2. Here, at least one of an inner peripheral surface of said outer member 1 and an outer peripheral surface of said inner member 2 has a spiral guiding wall for guiding the particular substance O from the one end to the other end, by the relative rotation between said outer member and said inner member.
    Type: Application
    Filed: October 21, 2004
    Publication date: June 28, 2007
    Applicant: RIX Corporation
    Inventors: Masaaki Isogai, Norio Yoshizaki, Hiroyuki Okamoto, Tatsuya Hisaji
  • Patent number: 4268362
    Abstract: A method for purifying raw acetic acid containing formaldehyde is provided wherein raw acetic acid is heat-treated at a temperature of about its boiling point or higher, in advance of the conventional distillation for removing a lower boiling fraction, and the acetic acid thus heat-treated is distilled to remove the lower boiling fraction, whereby the content of formaldehyde can be reduced down to 30 ppm or lower.
    Type: Grant
    Filed: December 28, 1976
    Date of Patent: May 19, 1981
    Assignee: Chisso Corporation
    Inventors: Tetsuya Ogawa, Norio Yoshizaki, Tadakatsu Katsuragi, Makoto Nakamura, Kiyonori Shiiba