Patents by Inventor Kosuke Mimaki

Kosuke Mimaki 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 the preparation of p-isopropenyl phenol
    Patent number: 4054611
    Abstract: Chemically stable p-isopropenyl phenol is produced in the form of a solution by contacting p-isopropenyl phenol, in the form of a gas or a liquid obtained immediately after condensation of said gas, with a polar solvent such as an alcohol, an ester, or an acid amide. The resultant solution of p-isopropenyl phenol can be used as the starting material for subsequent reaction to obtain useful compounds such as hydroquinone. Alternatively, p-isopropenyl phenol may be isolated in crystalline form by adding to the solution a poor solvent for the phenol such as water, or by cooling the solution.
    Type: Grant
    Filed: July 30, 1974
    Date of Patent: October 18, 1977
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kosuke Mimaki, Tsutomu Takase, Mitsuhiro Iwasa, Tomitaka Yamamori