Patents by Inventor Rika KASAI

Rika KASAI 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 pyridine compound
    Patent number: 9708341
    Abstract: A pyridine compound represented by formula (1) that is useful as an insecticide is produced by reacting a compound represented by formula (2) and a compound represented by formula (3). In formula (2) L1 represents a halogen atom; R2, R3, R4, R5, and R6 represent chain hydrocarbon groups, etc., having 1-6 carbon atoms optionally substituted by fluorine atoms; A1 represents —NR7—, an oxygen atom, or a sulfur atom; A2 represents a nitrogen atom or ?CR8—; and R7 and R8 represent C1-6 chain hydrocarbon groups or hydrogen atoms. In formula (3) M+ represents a sodium ion, a potassium ion, or a lithium ion.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 18, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takayuki Wakamatsu, Rika Kasai
  • METHOD FOR PRODUCING PYRIDINE COMPOUND
    Publication number: 20170152270
    Abstract: A pyridine compound represented by formula (1) that is useful as an insecticide is produced by reacting a compound represented by formula (2) and a compound represented by formula (3). In formula (2) L1 represents a halogen atom; R2, R3, R4, R5, and R6 represent chain hydrocarbon groups, etc., having 1-6 carbon atoms optionally substituted by fluorine atoms; A1 represents —NR7—, an oxygen atom, or a sulfur atom; A2 represents a nitrogen atom or ?CR8—; and R7 and R8 represent C1-6 chain hydrocarbon groups or hydrogen atoms. In formula (3) M+ represents a sodium ion, a potassium ion, or a lithium ion.
    Type: Application
    Filed: May 29, 2015
    Publication date: June 1, 2017
    Inventors: Takayuki WAKAMATSU, Rika KASAI