Patents by Inventor Takashi Wakasugi

Takashi Wakasugi 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).

  • Method for preparing monochloroacetaldehyde trimer
    Patent number: 5008462
    Abstract: A method for preparing a monochloroacetaldehyde trimer in a high yield is here disclosed which comprises the steps of dissolving, in an organic solvent, a solution containing monochloroacetaldehyde as the main component, and then trimerizing monochloroacetaldehyde in the presence of sulfuric acid. The thus prepared monochloroacetaldehyde trimer can be heated at 120.degree. C. under atmospheric pressure to obtain pure monochloroacetaldehyde.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: April 16, 1991
    Assignee: Kureha Chemical Industry Co., Ltd.
    Inventors: Makoto Ishizuka, Takashi Wakasugi