Patents by Inventor Youichi Ishii

Youichi Ishii 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).

  • Ruthenium-phosphine complex
    Patent number: 4691037
    Abstract: A ruthenium-phosphine complex represented by the formula (I)Ru.sub.x H.sub.y Cl.sub.z (R--BINAP).sub.2 (S).sub.p (I)wherein R--BINAP represents tertiary phosphine represented by the formula (II) ##STR1## R which is the same represents hydrogen, methyl or t-butyl, S represents tertiary amine, y represents 0 or 1, and when y is 0, x represents 2, z represents 4 and p represents 1, and when y is 1, x represents 1, z represents 1 and p represents 0.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: September 1, 1987
    Assignee: Takasago Perfumery Co., Ltd.
    Inventors: Sadao Yoshikawa, Masahiko Saburi, Takao Ikariya, Youichi Ishii, Susumu Akutagawa