Patents by Inventor Yasunobu Shimano

Yasunobu Shimano 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).

  • 5,5'-diamino or 5,5'-diacetamido-2,2'-bis(diphenylphosphino)-1,1'-binaphthyls
    Patent number: 4705895
    Abstract: A phosphine compound represented by formula: ##STR1## wherein R represents a hydrogen atom or an acetyl group; and Ph represents a phenyl group. The phosphine compound is capable of forming a complex with a metallic element, e.g., rhodium, ruthenium, palladium, etc., which exhibits high performances as a catalyst for asymmetric syntheses.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: November 10, 1987
    Assignee: Takasago Perfumery Co., Ltd.
    Inventors: Tamon Okano, Hidenori Kumobayashi, Susumu Akutagawa, Jitsuo Kiji, Hisatoshi Konishi, Keiichi Fukuyama, Yasunobu Shimano