Patents by Inventor Yoshihiro Ohhata

Yoshihiro Ohhata 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 inhibiting oxidation of oils and fats or fatty acids
    Patent number: 5948926
    Abstract: A method for inhibiting the oxidation of oils and fats or fatty acids which comprises adding an antioxidant and an oxyacid having an average particle size of 200 .mu.m or less to said oils and fats or fatty acids. According to this method, the oxyacid is easily dispersed or dissolved in said oils and fats or fatty acids, and the oxidation inhibiting effect is remarkably improved without deteriorating the quality of the oils and fats or fatty acids.
    Type: Grant
    Filed: February 7, 1995
    Date of Patent: September 7, 1999
    Assignees: NOF Corporation, Shiseido Company, Ltd.
    Inventors: Hiroyuki Takeo, Masaaki Sugino, Hideto Yamamoto, Takeshi Matsuo, Yoshihiro Ohhata, Isao Takayanagi
  • Dermatologial external agent
    Patent number: 5292531
    Abstract: A dermatological external agent such as a pharmaceutical, quasi-drug, or cosmetic comprising tetrahydroabietic acid, a salt thereof, and hydrogenated rosin and a salt thereof, formulated therein, has an excellent antibacterial action, is not harmful to the human body, and has an excellent stability.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: March 8, 1994
    Assignee: Shiseido Company Ltd.
    Inventors: Keiichi Uehara, Yoshihiro Ohhata, Akio Kawabata, Yoshikazu Inoue, Yoshihiro Yokogawa, Yuji Tsutsumi