Patents by Inventor Masashi Hisamoto

Masashi Hisamoto 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 producing nicotinic acid derivative or salt thereof
    Patent number: 8039633
    Abstract: To provide a method for producing a specific nicotinic acid derivative or a salt thereof. A method for producing a nicotinic acid derivative represented by the formula (I): wherein each of X1 and X2 which are independent of each other, is a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a haloalkyl group or a haloalkoxy group; R is an alkyl group; and Hal is a chlorine atom or a bromine atom; or a salt thereof, is provided which comprises reacting a compound represented by the formula (II): is wherein X1, X2 and R are as defined above, or a salt thereof, with a halogenating agent.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: October 18, 2011
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeyuki Nishimura, Fumio Kanamori, Masashi Hisamoto
  • METHOD FOR PRODUCING NICOTINIC ACID DERIVATIVE OR SALT THEREOF
    Publication number: 20090054656
    Abstract: To provide a method for producing a specific nicotinic acid derivative or a salt thereof. A method for producing a nicotinic acid derivative represented by the formula (I): wherein each of X1 and X2 which are independent of each other, is a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a haloalkyl group or a haloalkoxy group; R is an alkyl group; and Hal is a chlorine atom or a bromine atom; or a salt thereof, is provided which comprises reacting a compound represented by the formula (II): is wherein X1, X2 and R are as defined above, or a salt thereof, with a halogenating agent.
    Type: Application
    Filed: April 20, 2006
    Publication date: February 26, 2009
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Shigeyuki Nishimura, Fumio Kanamori, Masashi Hisamoto