Patents by Inventor Natsuru HIRAGURI

Natsuru HIRAGURI 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).

  • Heterocyclic compound and harmful-arthropod control agent containing same
    Patent number: 11203590
    Abstract: A compound represented by formula (I), which is highly effective in controlling harmful arthropods, an intermediate thereof and a production method thereof are described. In formula (I), A1 represents CH or a nitrogen atom; R1 represents a C1-C6 alkyl group optionally having one or more halogen atoms; R5 represents CF3, C2F5, or S(O)mCF3; Q represents NR2C(O)OR3 or N?CR4R6; R2 represents a hydrogen atom or the like; R3 represents a C1-C6 alkyl group optionally having one or more halogen atoms or the like; R4 represents a hydrogen atom or the like; R6 represents a phenyl group optionally having one or more substituents selected from group D, or the like; and n and m each independently are 0, 1, or 2. Group D: a group consisting of C1-C6 alkyl groups optionally having one or more halogen atoms and C1-C6 alkoxy groups optionally having one or more halogen atoms or the like.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: December 21, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takayuki Shioda, Daisuke Oohira, Kaori Ikari, Natsuru Hiraguri
  • HETEROCYCLIC COMPOUND AND HARMFUL-ARTHROPOD CONTROL AGENT CONTAINING SAME
    Publication number: 20200165244
    Abstract: A compound represented by formula (I), which is highly effective in controlling harmful arthropods, an intermediate thereof and a production method thereof are described. In formula (I), A1 represents CH or a nitrogen atom; R1 represents a C1-C6 alkyl group optionally having one or more halogen atoms; R5 represents CF3, C2F5, or S(O)mCF3; Q represents NR2C(O)OR3 or N?CR4R6; R2 represents a hydrogen atom or the like; R3 represents a C1-C6 alkyl group optionally having one or more halogen atoms or the like; R4 represents a hydrogen atom or the like; R6 represents a phenyl group optionally having one or more substituents selected from group D, or the like; and n and m each independently are 0, 1, or 2. Group D: a group consisting of C1-C6 alkyl groups optionally having one or more halogen atoms and C1-C6 alkoxy groups optionally having one or more halogen atoms or the like.
    Type: Application
    Filed: July 12, 2018
    Publication date: May 28, 2020
    Inventors: Takayuki SHIODA, Daisuke OOHIRA, Kaori IKARI, Natsuru HIRAGURI
  • Method for producing (R)-1,1,3-trimethyl-4-aminoindane
    Patent number: 9765032
    Abstract: A method for producing (R)-1,1,3-trimethyl-4-aminoindane includes the following steps (A), (B), and (C). Step (A) is a step of optically resolving 1,1,3-trimethyl-4-aminoindane to obtain (R)-1,1,3-trimethyl-4-aminoindane and (S)-1,1,3-trimethyl-4-aminoindane, step (B) is a step of racemizing the (S)-1,1,3-trimethyl-4-aminoindane obtained in the step (A) or (C) to obtain 1,1,3-trimethyl-4-aminoindane, and step (C) is a step of optically resolving the 1,1,3-trimethyl-4-aminoindane obtained in the step (B) to obtain (R)-1,1,3-trimethyl-4-aminoindane and (S)-1,1,3-trimethyl-4-aminoindane.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: September 19, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tadafumi Matsunaga, Natsuru Hiraguri, Tomoaki Takahashi, Tomohiko Inui, Masaya Tanimoto
  • METHOD FOR PRODUCING (R)-1,1,3-TRIMETHYL-4-AMINOINDANE
    Publication number: 20170166532
    Abstract: A method for producing (R)-1,1,3-trimethyl-4-aminoindane includes the following steps (A), (B), and (C). Step (A) is a step of optically resolving 1,1,3-trimethyl-4-aminoindane to obtain (R)-1,1,3-trimethyl-4-aminoindane and (S)-1,1,3-trimethyl-4-aminoindane, step (B) is a step of racemizing the (S)-1,1,3-trimethyl-4-aminoindane obtained in the step (A) or (C) to obtain 1,1,3-trimethyl-4-aminoindane, and step (C) is a step of optically resolving the 1,1,3-trimethyl-4-aminoindane obtained in the step (B) to obtain (R)-1,1,3-trimethyl-4-aminoindane and (S)-1,1,3-trimethyl-4-aminoindane.
    Type: Application
    Filed: December 26, 2014
    Publication date: June 15, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tadafumi MATSUNAGA, Natsuru HIRAGURI, Tomoaki TAKAHASHI, Tomohiko INUI, Masaya TANIMOTO