Patents by Inventor Masatoshi Arai

Masatoshi Arai 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: 20220179314
    Abstract: A resist composition containing a resin component that exhibits changed solubility in a developing solution under action of acid and a photodecomposable base that controls the diffusion of the acid generated upon exposure, the resin component has a constitutional unit represented by General Formula (a0-1), and the photodecomposable base has an anion moiety and a cation moiety, where the energy of LUMO of the cation moiety is ?4.
    Type: Application
    Filed: November 18, 2021
    Publication date: June 9, 2022
    Inventors: Rin ODASHIMA, Masatoshi ARAI, Masahito YAHAGI
  • Publication number: 20220171286
    Abstract: A resist composition containing a metal compound and a polymer. A structure of the metal compound is changed upon exposure, and the metal compound exhibits changed solubility in a developing solution. The polymer segregates on a surface of a resist film in a case where the resist film is formed using the resist composition. The metal compound contains a metal ion of a metal atom of Group 3 to Group 16 in the long periodic table or a metal oxide of the metal atom, and a bonder that is bonded to the metal ion or the metal oxide. The content of the metal atom contained in the metal ion or the metal oxide is in a range of 0.2% to 3% by mass with respect to a total mass of the resist composition.
    Type: Application
    Filed: November 15, 2021
    Publication date: June 2, 2022
    Inventors: Takatoshi INARI, Masatoshi ARAI, Takaya MAEHASHI, Yoshitaka KOMURO, Daisuke KAWANA, Kiwamu SUE, Sho KATAOKA
  • Publication number: 20220121116
    Abstract: A resist composition containing a resin component (A1) having a constitutional unit (a01) derived from a compound represented by General Formulae (a0-1) and one or more compounds selected from the group consisting of a compound (B01) represented by General Formula (b0-1) and a compound (B02) represented by General Formula (b0-2), W01 represents a polymerizable group-containing group, Ya01 represents a single bond or the like, Rx01 represents an acid dissociable group, Rb1 and Rb4 represents an aryl group having a fluorine atom, Rb2, Rb3, and Rb5 represents an aryl group or the like which may have a substituent, and X01? and X02? represents a counter anion
    Type: Application
    Filed: October 11, 2021
    Publication date: April 21, 2022
    Inventors: Koshi ONISHI, Masatoshi ARAI, Masahito YAHAGI, Yosuke SUZUKI, Yuta IWASAWA
  • Publication number: 20220121117
    Abstract: A resist composition that generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid, which contains a resin component (A1) exhibiting changed solubility in a developing solution under action of acid, the resin component (A1) has a constitutional unit (a01) derived from a compound represented by General Formula (a0-1), W01 represents a polymerizable group-containing group, Ya01 represents a single bond or a divalent linking group, Ra01 represents a cyclic acid dissociable group, q represents an integer in a range of 0 to 3, and n represents an integer of 1 or more, provided that n?q×2+4 is satisfied
    Type: Application
    Filed: October 11, 2021
    Publication date: April 21, 2022
    Inventors: Koshi ONISHI, Masatoshi ARAI, Junichi MIYAKAWA
  • Patent number: 11307377
    Abstract: A light source device includes an excitation-light light source which emits excitation light, a reflection member which reflects the excitation light, a lens which is arranged on an optical path of the excitation light which leads from the excitation-light light source to the reflection member and refracts the excitation light, a housing which houses the reflection member in a hermetically sealed internal space, an operation member which is exposed from the housing in a direction which intersects the optical path and is moved towards the inside and outside of the housing, and an adjustment mechanism which adjusts a length of an optical path between the reflection member and the lens in linkage with the operation member which is moved towards the inside and outside of the housing.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: April 19, 2022
    Assignee: MAXELL, LTD.
    Inventors: Masatoshi Arai, Kazuo Shikita
  • Patent number: 11281099
    Abstract: A resist composition including a compound represented by formula (b1) in which Rb1 represents an aryl group which may have a substituent; Rb2 and Rb3 each independently represents an aryl group which may have a substituent or an alkyl group which may have a substituent; provided that at least one of the aryl group represented by Rb1 and the aryl group or the alkyl group represented by Rb2 or Rb3 has a substituent containing a halogen atom, and at least one of the aryl group represented by Rb1 and the aryl group or the alkyl group represented by Rb2 or Rb3 has a substituent containing a sulfonyl group; and X? represents a counteranion.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: March 22, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Hiroto Yamazaki, Masatoshi Arai, Yoshitaka Komuro
  • Publication number: 20220085191
    Abstract: According to one embodiment, a semiconductor device includes first and second metal members, and a semiconductor element. The first metal member is electrically connected to a first terminal. The semiconductor element includes first and second electrodes, first to third semiconductor regions, and a gate electrode. The second metal member is provided on the second electrode, and electrically connected to the second electrode and a second terminal. The semiconductor element includes a first portion that overlaps the second metal member in the first direction, and a second portion that does not overlap the second metal member in the first direction. A length in the second direction of the first semiconductor region between an adjacent pair of the gate electrodes is greater than a length in the second direction of the first semiconductor region between an adjacent pair of the gate electrodes.
    Type: Application
    Filed: March 10, 2021
    Publication date: March 17, 2022
    Inventor: Masatoshi ARAI
  • Patent number: 11275307
    Abstract: A resist composition including a resin component which exhibits changed solubility in a developing solution under action of acid, the resin component including a structural unit represented by general formula (a0) shown below in which Vax0 represents a single bond or a divalent linking group; Wa represents a divalent aromatic hydrocarbon group which may have a substituent; Ya0 represents a carbon atom; Xa0 represents a group which forms a cyclic hydrocarbon group together with Ya0; Ra00 represents a hydrocarbon group which may have a substituent; provided that at least one of Xa0 and Ra00 has a carbon atom constituting a carbon-carbon unsaturated bond at an ?-position of Ya0.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: March 15, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Masatoshi Arai, Takaya Maehashi, Koshi Onishi
  • Patent number: 11256169
    Abstract: A resist composition containing a resin component having a structural unit containing a group which is dissociated under the action of an acid and compound represented by the general formula (bd1). In the formula (bd1), Rx1 to Rx4 represent a hydrocarbon group or a hydrogen atom or may be mutually bonded to form a ring structure, Ry1 to Ry2 represent a hydrocarbon group or a hydrogen atom or may be mutually bonded to form a ring structure, and Rz1 to Rz4 represent a hydrocarbon group or a hydrogen atom or may be mutually bonded to form a ring structure.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: February 22, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takuya Ikeda, Nobuhiro Michibayashi, Mari Murata, Hiroto Yamazaki, Masatoshi Arai, Yoshitaka Komuro
  • Publication number: 20220019142
    Abstract: A resist composition containing a resin component (A1) having a constitutional unit derived from a compound represented by General Formula (a01-1).
    Type: Application
    Filed: June 23, 2021
    Publication date: January 20, 2022
    Inventors: Masatoshi ARAI, KhanhTin NGUYEN
  • Patent number: 11221552
    Abstract: A light source device comprises: an excitation light source configured to generate excitation light; a wavelength conversion member including a base and a phosphor layer which is provided on the base and configured to convert the excitation light into fluorescence; and a converging optical system including a converging lens for converging the excitation light on the phosphor layer, wherein the light source device further comprises a housing for accommodating the wavelength conversion member, the excitation light source is provided outside the housing, a wall surface of the housing includes a lens hole into which the converging lens is inserted, and the converging lens which is inserted into the lens hole and the wall surface of the housing isolate an internal space of the housing from an outer space of the housing.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: January 11, 2022
    Assignee: MAXELL, LTD.
    Inventors: Masatoshi Arai, Hiroshi Shiina, Kentaro Sano
  • Patent number: 11221557
    Abstract: A resist composition containing a compound represented by the general formula (bd1-1), (bd1-2) or (bd1-3); in the formula, Rx1 to Rx4 represent a hydrocarbon group or a hydrogen atom or may be mutually bonded to form a ring structure; Ry1 to Ry2 represent a hydrocarbon group or a hydrogen atom or may be mutually bonded to form a ring structure, Rz1 to Rz4 represent a hydrocarbon group or a hydrogen atom or may be mutually bonded to form a ring structure. At least one of Rx1 to Rx4, Ry1 to Ry2 and Rz1 to Rz4 has an anion group, M1m+ represents a sulfonium cation having a sulfonyl group, R001 to R003 each independently represent a monovalent organic group; provided that at least one of R001 to R003 is an organic group having an acid dissociable group; and M3m+ represents an m-valent organic cation having an electron-withdrawing group.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 11, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takuya Ikeda, Masahiro Shiosaki, Masatoshi Arai, Yoshitaka Komuro
  • Publication number: 20210389668
    Abstract: A resist composition including a compound represented by formula (b1) in which Rb1 represents an aryl group which may have a substituent; Rb2 and Rb3 each independently represents an aryl group which may have a substituent or an alkyl group which may have a substituent; provided that at least one of the aryl group represented by Rb1 and the aryl group or the alkyl group represented by Rb2 or Rb3 has a substituent containing a halogen atom, and at least one of the aryl group represented by Rb1 and the aryl group or the alkyl group represented by Rb2 or Rb3 has a substituent containing a sulfonyl group; and X? represents a counteranion
    Type: Application
    Filed: August 4, 2021
    Publication date: December 16, 2021
    Inventors: Hiroto YAMAZAKI, Masatoshi ARAI, Yoshitaka KOMURO
  • Patent number: 11201240
    Abstract: A semiconductor device includes: a first semiconductor layer of first conductivity type; a second semiconductor layer of first conductivity type provided on the first semiconductor layer and having a first region and a second region; a first semiconductor region of second conductivity type provided on the first region; a second semiconductor region of first conductivity type provided on the first semiconductor region; a second electrode provided in a first trench reaching the first region from above the first semiconductor region, the second electrode facing the first semiconductor region via a first insulating film, the second electrode being electrically connected to a first electrode provided above the first semiconductor layer; a fourth electrode provided below the second electrode in the first trench, the fourth electrode facing the first region via a second insulating film, the fourth electrode being electrically connected to a third electrode provided on the second semiconductor region and electrically
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: December 14, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Masatoshi Arai
  • Patent number: 11181822
    Abstract: A resist composition including a compound represented by formula (bd1), a total amount of the acid-generator component and the basic component being 20 to 70 parts by weight, relative to 100 parts by weight of the base material component. In the formula, Rx1 to Rx4 represents a hydrogen atom or a hydrocarbon group, or two or more of Rx1 to Rx4 may be mutually bonded to form a ring structure; Ry1 and Ry2 represents a hydrogen atom or a hydrocarbon group, or Ry1 and Ry2 may be mutually bonded to form a ring structure; Rz1 to Rz4 represents a hydrogen atom or a hydrocarbon group, or two or more of Rz1 to Rz4 may be mutually bonded to form a ring structure; provided that at least one of Rx1 to Rx4, Ry1, Ry2 and Rz1 to Rz4 has an anionic group; and Mm+ represents an m-valent organic cation).
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: November 23, 2021
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Koshi Onishi, KhanhTin Nguyen, Masatoshi Arai, Yoshitaka Komuro
  • Publication number: 20210302688
    Abstract: A light source device includes an excitation-light light source which emits excitation light, a reflection member which reflects the excitation light, a lens which is arranged on an optical path of the excitation light which leads from the excitation-light light source to the reflection member and refracts the excitation light, a housing which houses the reflection member in a hermetically sealed internal space, an operation member which is exposed from the housing in a direction which intersects the optical path and is moved towards the inside and outside of the housing, and an adjustment mechanism which adjusts a length of an optical path between the reflection member and the lens in linkage with the operation member which is moved towards the inside and outside of the housing.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 30, 2021
    Inventors: Masatoshi ARAI, Kazuo SHIKITA
  • Publication number: 20210296491
    Abstract: A semiconductor device includes: a first semiconductor layer of first conductivity type; a second semiconductor layer of first conductivity type provided on the first semiconductor layer and having a first region and a second region; a first semiconductor region of second conductivity type provided on the first region; a second semiconductor region of first conductivity type provided on the first semiconductor region; a second electrode provided in a first trench reaching the first region from above the first semiconductor region, the second electrode facing the first semiconductor region via a first insulating film, the second electrode being electrically connected to a first electrode provided above the first semiconductor layer; a fourth electrode provided below the second electrode in the first trench, the fourth electrode facing the first region via a second insulating film, the fourth electrode being electrically connected to a third electrode provided on the second semiconductor region and electrically
    Type: Application
    Filed: September 4, 2020
    Publication date: September 23, 2021
    Inventor: Masatoshi ARAI
  • Publication number: 20210230332
    Abstract: An alternating copolymer including a structural unit (a0-1) represented by general formula (a0-1) and a structural unit (a0-2) represented by general formula (a0-2) in which Rp01 represents a hydrogen atom or the like; Vp01 represents a single bond or a divalent linking group; Rp02 and Rp03 each independently represents a hydrocarbon group which may have a substituent, or Rp02 and Rp03 are mutually bonded to form a ring; Rp04 represents a hydrogen atom, a C1-C5 alkyl group or a C1-C5 halogenated alkyl group; Rp05 represents an alkyl group, an alkoxy group, a halogen atom, a halogenated alkyl group, a cyano group or a hydroxy group; Rp06 represents a linear or branched aliphatic hydrocarbon group; and m represents an integer of 0 to 4
    Type: Application
    Filed: January 19, 2021
    Publication date: July 29, 2021
    Inventors: Akiyoshi YAMAZAKI, Daisuke KAWANA, Yoshitaka KOMURO, Masatoshi ARAI, Nobuhiro MICHIBAYASHI, Takatoshi INARI
  • Patent number: 11061329
    Abstract: A resist composition including a resin component having a structural unit derived form a compound represented by formula (a0-1) (in the formula, W represents a polymerizable group-containing group; Ra01 is a group which is bonded to Ra03 to form an aliphatic cyclic group, or bonded to Ra04 to form an aliphatic cyclic group; Ra02 represents a hydrocarbon group which may have a substituent; Ra03 is a hydrogen atom or a monovalent organic group in the case where Ra01 is not bonded thereto; Ra04 is a hydrogen atom or a monovalent organic group in the case where Ra01 is not bonded thereto; and Ra05 to Ra07 each independently represents a hydrogen atom or a monovalent organic group).
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: July 13, 2021
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takuya Ikeda, Masatoshi Arai
  • Publication number: 20210191261
    Abstract: Organically modified metal oxide nanoparticles containing two or more cores including a plurality of metal atoms and a plurality of oxygen atoms covalently bonded to the plurality of metal atoms; a first modifying group that is a ligand coordinated to each of the cores and selected from the group consisting of a carboxylic acid carboxylate, a sulfonic acid sulfonate, and a phosphonic acid phosphonate; and a second modifying group that is coordinated to each of the cores and is a ligand having a structure different from that of the first modifying group and/or an inorganic anion, in which organically modified metal oxide nanoparticles have a structure in which the cores are crosslinked through a coordinate bond by at least the first modifying group.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 24, 2021
    Inventors: Kiwamu SUE, Sho KATAOKA, Yusuke YOSHIGOE, Takatoshi INARI, Masatoshi ARAI, Takaya MAEHASHI, Yoshitaka KOMURO, Daisuke KAWANA