Patents by Inventor Ryuji Sugai

Ryuji Sugai 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).

  • Preventive for circulatory diseases
    Patent number: 5703212
    Abstract: A preventive for circulatory diseases which can prevent the onset of circulatory diseases, particularly cerebral stroke, without causing adverse effects such as blood-pressure fluctuation. The preventive contains as the active ingredient a low-molecular-weight peptide fraction prepared by the trypsinization of casein followed by partial purification.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: December 30, 1997
    Assignee: Kanebo, Ltd.
    Inventors: Ryuji Sugai, Umeji Murakami, Yukio Yamori
  • Method for preparing dihydric phenols
    Patent number: 5426244
    Abstract: Phenols are reacted with a hydrogen peroxide in the presence of a crystalline titanosilicate catalyst and a cyclic ether, such as dioxane, as a solvent. The method provides especially high para-selectivity compared with conventional methods, and, at the same time, provides high yields of dihydric phenols versus hydrogen peroxide.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: June 20, 1995
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Ryuji Sugai, Osamu Kondo, Yuki Motoyama, Shu Yoshida