Patents by Inventor Taichi Abe

Taichi Abe 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).

  • Publication number: 20230134165
    Abstract: A composition containing a phosphorescent compound represented by the formula (1) and a compound (F) having a condensed hetero ring skeleton containing at least one atom (a) selected from the group consisting of a nitrogen atom and a boron atom in the ring is provided. If the value of the energy level in the lowest triplet excited state of the above-described phosphorescent compound is expressed as Tp (eV), the value of the energy level of the lowest triplet excited state of the above-described compound (F) is expressed as TF (eV) and the number of the above-described atom (a) in the condensed hetero ring skeleton per 1000 of the molecular weight of the above-described compound (F) is expressed as Nf, then, the formula (A) and the formula (B) are satisfied: |TP|?|TF|?0.15??(A) 0.01?Nf?4.
    Type: Application
    Filed: March 9, 2021
    Publication date: May 4, 2023
    Inventors: Takakazu SAITO, Ryuji MATSUMOTO, Takayuki IIJIMA, Kohei ASADA, Taichi ABE
  • Publication number: 20230103250
    Abstract: There is provided a pharmaceutical composition comprising lemborexant exhibiting a favorable dissolution profile by using a granular material having a 90% cumulative diameter (D90) of 64 ?m or less as a lemborexant active pharmaceutical ingredient.
    Type: Application
    Filed: January 14, 2021
    Publication date: March 30, 2023
    Inventors: Taichi ABE, Yusuke AYATA, Nobuya SUZUKI, Yurie AKIMOTO, Futoshi SHIKATA, Yasuhiro Zaima, Nobuo YOSHIDA
  • Publication number: 20220194925
    Abstract: The present application discloses a method and a compound that are useful for preparation of a compound of Formula (XI). Furthermore, the present application discloses the compound of Formula (XI) comprising a small amount of impurities.
    Type: Application
    Filed: May 13, 2020
    Publication date: June 23, 2022
    Inventors: Taichi Abe, Kazuhiro Yoshizawa, Yuzo Watanabe, Takeshi Miura, Yusuke Ayata, Yoshinori Yasuda
  • Publication number: 20220048862
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Application
    Filed: October 27, 2021
    Publication date: February 17, 2022
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Patent number: 11186547
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: November 30, 2021
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Publication number: 20210036241
    Abstract: A composition contains metal complexes represented formulas (1) and (2): M1 and M2 represent an iridium atom; n1 and n3 represent an integer of 1 or more; n2 and n4 represent an integer of 0 or more; Ring R1A represents a triazole ring; Ring R2 represents an aromatic hydrocarbon ring; R11A to R13A are each hydrogen or a substituent; A1-G1-A2 represents an anionic bidentate ligand; at least one of E11A to E13A is a nitrogen atom, and at least one of R11A to R13A bonding to the nitrogen atom is a group represented by the formula (Ar-1A). Ring A represents an aromatic hydrocarbon ring and R2 represents a substituent. EL represents a carbon atom; Ring L1 represents a 6-membered aromatic hetero ring; Ring L2 represents an aromatic hydrocarbon ring; A3-G2-A4 represents an anionic bidentate ligand, and at least one of Ring L1 and Ring L2 has a substituent.
    Type: Application
    Filed: September 19, 2018
    Publication date: February 4, 2021
    Inventors: Toshiaki SASADA, Kohei ASADA, Taichi ABE, Mayu YOSHIOKA
  • Publication number: 20200407322
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Application
    Filed: September 16, 2020
    Publication date: December 31, 2020
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Patent number: 10822277
    Abstract: The present invention relates to an oxidation-induced highly-functional self-healing ceramic composition, a method for producing the ceramic composition, a use of the ceramic composition and a method for achieving the enhancement of the functionality of the ceramic composition, by focusing on a repairing stage and a remodeling state in a self-healing process and by carrying out elemental and structural designing of an oxidation-induced self-healing ceramic composition for the purpose of speeding up these stages.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: November 3, 2020
    Assignee: National Institute for Materials Science
    Inventors: Toshio Osada, Kiichi Kamoda, Toru Hara, Masanori Mitome, Taichi Abe, Takahito Ohmura, Wataru Nakao
  • Patent number: 10822307
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: November 3, 2020
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Publication number: 20200194695
    Abstract: A composition is provided in which a phosphorescent compound represented by formula (1) and a host material are blended with each other. The amount of chlorine atoms contained as impurities in the phosphorescent compound is 3.5 ppm by mass or less with respect to the total amount of solid contents blended in the composition. In Formula (1), M1 represents an iridium atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, n1+n2 is 2 or 3; E1 and E2 represent a carbon atom or a nitrogen atom; R1 ring represents a 5-membered aromatic heterocyclic ring and R2 ring represents an aromatic hydrocarbon ring; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 represent a nitrogen atom; and G1 represents a single bond.
    Type: Application
    Filed: February 26, 2020
    Publication date: June 18, 2020
    Inventors: Toshiaki SASADA, Taichi ABE, Tomoyasu YOSHIDA, Takakazu SAITO
  • Publication number: 20190389804
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Patent number: 10407393
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: September 10, 2019
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Publication number: 20190185432
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 20, 2019
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Publication number: 20190185500
    Abstract: A metal complex represented by formula (1) is provided. In formula (1), X represents a nitrogen atom or a group represented by ?C(RX)—; R1 represents an alkyl group having 4 or more carbon atoms; R2 represents an alkyl, cycloalkyl, alkoxy, cycloalkoxy, aryl, aryloxy, monovalent heterocyclic, or substituted amino group or a halogen atom; rings A and B each independently represent an aromatic hydrocarbon ring or an aromatic heterocyclic ring; M represents a rhodium, palladium, iridium, or platinum atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, and n1+n2 is 2 or 3; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 each independently represent a carbon atom, an oxygen atom, or a nitrogen atom; and G1 represents a single bond or an atomic group constituting a bidentate ligand together with A1 and A2.
    Type: Application
    Filed: March 30, 2017
    Publication date: June 20, 2019
    Inventors: Mayu YOSHIOKA, Taichi ABE, Toshiaki SASADA, Kohei ASADA, Nobuhiko AKINO
  • Patent number: 10319020
    Abstract: A product introduction support device includes a display control part, a keyword extraction part, a sorting word selection part, and a group presentation part. The display control part is configured to create display control information to arrange a plurality of selected products in a browsable state on a web. The keyword extraction part is configured to extract a keyword representing an attribute for each of the plurality of selected products. The sorting word selection part is configured to select at least one keyword common to or similar to a plurality of products among the keywords extracted by the keyword extraction part as a sorting word. The group presentation part is configured to perform processing of presenting candidates for a product group that are bracketable by the sorting word among the plurality of selected products.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: June 11, 2019
    Assignee: Rakuten, Inc.
    Inventors: Taichi Abe, Chisa Yamamoto
  • Patent number: 10259791
    Abstract: Provided is a compound represented by formula (IV) or a salt thereof, wherein the content of the compound represented by formula (I) is 350 ppm by mass or less.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: April 16, 2019
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Taiju Nakamura, Taichi Abe, Yusuke Miyashita, Hirofumi Kuroda, Yusuke Ayata, Atsushi Akao
  • Publication number: 20190036046
    Abstract: A composition is provided in which a phosphorescent compound represented by formula (1) and a host material are blended with each other. The amount of chlorine atoms contained as impurities in the phosphorescent compound is 3.5 ppm by mass or less with respect to the total amount of solid contents blended in the composition In Formula (1), M1 represents an iridium atom; n1 represents an integer of 1 or more, n2 represents an integer of 0 or more, n1+n2 is 2 or 3; E1 and E2 represent a carbon atom or a nitrogen atom; R1 ring represents a 5-membered aromatic heterocyclic ring and R2 ring represents an aromatic hydrocarbon ring; A1-G1-A2 represents an anionic bidentate ligand; A1 and A2 represent a nitrogen atom; and G1 represents a single bond.
    Type: Application
    Filed: January 24, 2017
    Publication date: January 31, 2019
    Inventors: Toshiaki SASADA, Taichi ABE, Tomoyasu YOSHIDA, Takakazu SAITO
  • Publication number: 20180170811
    Abstract: The present invention relates to an oxidation-induced highly-functional self-healing ceramic composition, a method for producing the ceramic composition, a use of the ceramic composition and a method for achieving the enhancement of the functionality of the ceramic composition, by focusing on a repairing stage and a remodeling state in a self-healing process and by carrying out elemental and structural designing of an oxidation-induced self-healing ceramic composition for the purpose of speeding up these stages.
    Type: Application
    Filed: June 13, 2016
    Publication date: June 21, 2018
    Applicants: National Institute for Materials Science, National University Corporation YOKOHAMA National University
    Inventors: Toshio OSADA, Kiichi KAMODA, Toru HARA, Masanori MITOME, Taichi ABE, Takahito OHMURA, Wataru NAKAO
  • Patent number: 10000458
    Abstract: A method for producing a 1,2,4-triazole compound involves reacting an amide compound represented by formula (2) with a hydrazide compound represented by formula (3) in a solvent in the presence of a Lewis acid and a Lewis base, thereby obtaining a 1,2,4-triazole compound represented by formula (1): R1 represents an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryl group, an aryloxy group, a monovalent heterocyclic group or a substituted amino group, R2 and R3 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, a monovalent heterocyclic group or a substituted amino group, and Ring A and Ring B each independently represent an aromatic hydrocarbon ring or an aromatic heterocyclic ring.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: June 19, 2018
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mayu Yoshioka, Taichi Abe
  • Publication number: 20170283383
    Abstract: A method for producing a 1,2,4-triazole compound involves reacting an amide compound represented by formula (2) with a hydrazide compound represented by formula (3) in a solvent in the presence of a Lewis acid and a Lewis base, thereby obtaining a 1,2,4-triazole compound represented by formula (1): R1 represents an alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryl group, an aryloxy group, a monovalent heterocyclic group or a substituted amino group, R2 and R3 each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, a monovalent heterocyclic group or a substituted amino group, and Ring A and Ring B each independently represent an aromatic hydrocarbon ring or an aromatic heterocyclic ring.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Inventors: Mayu YOSHIOKA, Taichi ABE