Patents by Inventor Nobuyoshi Asai

Nobuyoshi Asai 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).

  • Device for holding helically wound wire resistor of a wire-wound type potentiometer
    Patent number: 4652852
    Abstract: Device for holding a helically wound wire resistor of a potentiometer in a helical groove comprising, an outer cylindrical member having an inwardly projecting ridge extending over the length thereof and a projecting claw, and an inner cylindrical member of an elastic nature having an outer surface engagable with the inner surface of the outer member, wherein the inner member has a cut out portion extending over the length thereof to receive the ridge from the outer member, and a recess in the outer surface to receive the claw of the outer member.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: March 24, 1987
    Assignee: Copal Company Limited
    Inventor: Nobuyoshi Asai
  • Aminosulfenyl chloride derivatives
    Patent number: 4421693
    Abstract: An aminosulfenyl chloride derivative represented by the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are defined in the specification, which is useful as an intermediate for the preparation of a carbamate derivative represented by the formula (III): ##STR2## wherein R.sup.1 and R.sup.2 are the same as defined above, the carbamate derivative having an insecticidal, miticidal or nematocidal activity, is disclosed. A process for preparing the aminosulfenyl chloride of the formula (I), and a process for preparing the carbamate derivative of the formula (III) using the aminosulfenyl chloride of the formula (I) are also disclosed.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: December 20, 1983
    Assignee: Otsuka Chemical Co., Ltd.
    Inventors: Takeshi Goto, Takashi Soeda, Nobuyoshi Asai, Akira Tanaka
  • Carbamate derivatives and insecticidal, miticidal or nematocidal compositions containing the same
    Patent number: 4413005
    Abstract: This invention relates to carbamate derivatives represented by the formula (I): ##STR1## a process for preparing the derivatives and insecticides containing the derivatives.
    Type: Grant
    Filed: February 26, 1982
    Date of Patent: November 1, 1983
    Assignee: Otsuka Kagaku Yakuhin Kabushiki Kaisha
    Inventors: Takeshi Goto, Hisashi Takao, Takashi Soeda, Nobuyoshi Asai, Sadahiko Iida, Mitsuyasu Kawata, Norio Osaki, Norio Yasudomi, Tadateru Murata, Akira Tanaka