Patents by Inventor Masahiko Toba

Masahiko Toba 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).

  • Patent number: 10851199
    Abstract: An epoxy (meth)acrylate compound represented by general formula (1): where at least one of R1 to R5 has a structure represented by formula (2): * denotes the bonding position to a carbon atom that constitutes the benzene ring to which R1 to R5 are bonded in formula (1), R7 denotes a hydrogen atom or a methyl group, the remainder of R1 to R5 are each independently selected from the group consisting of hydrogen atoms, alkyl groups and alkoxy groups having 1-6 carbon atoms, and R6 denotes a hydrogen atom or a methyl group. In the epoxy (meth)acrylate compound, the content of halogen atoms is 100 ppm by mass or less. A curable composition for forming a protective film for an electrically conductive pattern obtained by mixing the epoxy (meth)acrylate compound with a photopolymerization initiator and at least one type of monomer or oligomer that contains a (meth)acryloyl group.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: December 1, 2020
    Assignee: SHOWA DENKO K. K.
    Inventors: Masahiko Toba, Jun Dou, Chika Yamashita, Yoshitaka Ishibashi, Hiroshi Uchida
  • Publication number: 20190388933
    Abstract: To provide: a transparent conductive substrate containing silver nanowires and having excellent optical characteristics, electrical characteristics and light resistance; and a method for producing the same. A transparent conductive substrate characterized by comprising: a substrate; a transparent conductive film formed on at least one principal surface of the substrate, and containing a binder resin and conductive fibers; and a protective film formed on the transparent conductive film, wherein the thermal decomposition starting temperature of the binder resin is 210° C. or higher, and the protective film is a thermal-cured film obtained using a thermosetting resin.
    Type: Application
    Filed: November 29, 2017
    Publication date: December 26, 2019
    Applicant: SHOW A DENKO K.K.
    Inventors: Masahiko TOBA, Eri NAKAZAWA, Shigeru YAMAKI
  • Publication number: 20190330493
    Abstract: A composition for a protective film for electroconductive patterns, including: (A) a polyurethane containing a carboxyl group; (B) an epoxy compound; (C) a curing accelerator; and (D) a solvent, wherein the percentage of the solvent (D) contained is from 95.0% to 99.9% by mass, and the solvent (D) contains (D1) a solvent containing a hydroxyl group and having a boiling point in excess of 100° C., and (D2) a solvent having a boiling point that does not exceed 100° C., wherein the content of the solvent (D2) having a boiling point that does not exceed 100° C. is 30% to less than 70% by mass of total solvent in total. The composition can be cured by heating at a temperature not exceeding 100° C. for a heating time not exceeding 10 minutes.
    Type: Application
    Filed: November 29, 2017
    Publication date: October 31, 2019
    Applicant: SHOWA DENKO K.K.
    Inventors: Masahiko TOBA, Eri NAKAZAWA, Shigeru YAMAKI
  • Publication number: 20190153149
    Abstract: [Problem] To provide an epoxy (meth)acrylate compound that serves as a material for a protective film that is unlikely to cause migration to an electrically conductive pattern, and a curable composition containing the epoxy (meth)acrylate compound. [Solution] Provided is an epoxy (meth)acrylate compound which is characterized by being represented by general formula (1) and in which the content of halogen atoms, which are impurities, is 100 ppm by mass or less. In addition, provided is a curable composition for forming a protective film for an electrically conductive pattern, the curable composition being obtained by mixing this epoxy (meth)acrylate compound with a photopolymerization initiator and at least one type of monomer or oligomer that contains a (meth)acryloyl group.
    Type: Application
    Filed: July 24, 2017
    Publication date: May 23, 2019
    Applicant: SHOWA DENKO K. K.
    Inventors: Masahiko TOBA, Jun DOU, Chika YAMASHITA, Yoshitaka ISHIBASHI, Hiroshi UCHIDA
  • Patent number: 8617722
    Abstract: The present invention provides a polymer material capable of preparing organic EL elements having low driving voltage and high durability. The polymer compound of the present invention includes a constituting unit derived from a monomer represented by the formula (1); (in the formula (1), each of A1's is independently a condensed polycyclic aromatic group optionally having a heteroatom as a ring-constituting atom; the condensed polycyclic aromatic group links to A2 at the meta position to the bonding position of the ring represented by the following formula; each of A2's is independently a six-membered ring aromatic group optionally having a heteroatom as a ring-constituting atom; at least one of A1 and A2 has a substituent having a polymerizable functional group; at least one of X's is a nitrogen atom, and n's are independently 1 or 2).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: December 31, 2013
    Assignee: Showa Denko K.K.
    Inventors: Masahiko Toba, Tsuyoshi Kato
  • Patent number: 8426037
    Abstract: The polymer compound of the present invention is characterized by comprising a constitutional unit derived from a compound represented by the formula (1): wherein A1, A3 and A5 are each independently a monovalent aromatic group which may have a hetero atom as a ring-constituting atom, A2, A4 and A6 are each independently a divalent aromatic group which may have a hetero atom as a ring-constituting atom, at least one of A1 to A6 has a substituent having a polymerizable functional group, A1 to A6 may have a substituent other than a substituent having a polymerizable functional group, m is an integer of 1 to 2, n is an integer of 0 to 2, and p is an integer of 0 to 2.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: April 23, 2013
    Assignee: Showa Denko K.K.
    Inventor: Masahiko Toba
  • Patent number: 8404362
    Abstract: The organic light-emitting element of the present invention is an organic light-emitting element constituted by arranging a light-emitting layer between an anode and a cathode, and is characterized in that the light-emitting layer contains a polymer compound comprising a constitutional unit derived from an electron transport polymerizable compound represented by the following formula (1) and a constitutional unit derived from a phosphorescent polymerizable compound; wherein R1 to R14 are each independently a hydrogen atom, a halogen atom, a cyano group, an amino group, an alkyl group of 1 to 12 carbon atoms or the like, R15 is a hydrogen atom or an alkyl group of 1 to 12 carbon atoms, and X1 is a single bond or the like.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: March 26, 2013
    Assignee: Showa Denko K.K.
    Inventor: Masahiko Toba
  • Publication number: 20100327738
    Abstract: The present invention provides a polymer material capable of preparing organic EL elements having low driving voltage and high durability. The polymer compound of the present invention includes a constituting unit derived from a monomer represented by the formula (1); (in the formula (1), each of A1's is independently a condensed polycyclic aromatic group optionally having a heteroatom as a ring-constituting atom; the condensed polycyclic aromatic group links to A2 at the meta position to the bonding position of the ring represented by the following formula; each of A2's is independently a six-membered ring aromatic group optionally having a heteroatom as a ring-constituting atom; at least one of A1 and A2 has a substituent having a polymerizable functional group; at least one of X's is a nitrogen atom, and n's are independently 1 or 2).
    Type: Application
    Filed: February 20, 2009
    Publication date: December 30, 2010
    Applicant: SHOWA DENKO K.K.
    Inventors: Masahiko Toba, Tsuyoshi Kato
  • Publication number: 20100201258
    Abstract: The organic light-emitting element of the present invention is an organic light-emitting element constituted by arranging a light-emitting layer between an anode and a cathode, and is characterized in that the light-emitting layer contains a polymer compound comprising a constitutional unit derived from an electron transport polymerizable compound represented by the following formula (1) and a constitutional unit derived from a phosphorescent polymerizable compound; wherein R1 to R14 are each independently a hydrogen atom, a halogen atom, a cyano group, an amino group, an alkyl group of 1 to 12 carbon atoms or the like, R15 is a hydrogen atom or an alkyl group of 1 to 12 carbon atoms, and X1 is a single bond or the like.
    Type: Application
    Filed: July 10, 2008
    Publication date: August 12, 2010
    Applicant: SHOWA DENKO K.K.
    Inventor: Masahiko Toba
  • Publication number: 20100201257
    Abstract: The polymer compound of the present invention is characterized by comprising a constitutional unit derived from a compound represented by the formula (1): wherein A1, A3 and A5 are each independently a monovalent aromatic group which may have a hetero atom as a ring-constituting atom, A2, A4 and A6 are each independently a divalent aromatic group which may have a hetero atom as a ring-constituting atom, at least one of A1 to A6 has a substituent having a polymerizable functional group, A1 to A6 may have a substituent other than a substituent having a polymerizable functional group, m is an integer of 1 to 2, n is an integer of 0 to 2, and p is an integer of 0 to 2.
    Type: Application
    Filed: July 10, 2008
    Publication date: August 12, 2010
    Applicant: SHOWA DENKO K.K.
    Inventor: Masahiko Toba
  • Publication number: 20100026172
    Abstract: An organic light-emitting device includes at least one organic layer sandwiched between anode and cathode wherein at least one of the at least one organic layer is a light-emitting layer that includes a polymer compound including structural units from a polymerizable compound (A) of Formula (1) below. The organic light-emitting device has high brightness and long life as well as high luminous efficiency. wherein at least one of R1 to R33 is a substituent group having a polymerizable functional group, and those of R1 to R33 that are not substituent groups having a polymerizable functional group are each independently a hydrogen atom, a halogen atom, a C1-10 alkyl group or other substituent group disclosed in the specification.
    Type: Application
    Filed: October 12, 2007
    Publication date: February 4, 2010
    Applicant: SHOWA DENKO K.K.
    Inventor: Masahiko Toba
  • Patent number: 7056483
    Abstract: A bed of calcium oxide and/or barium oxide in particulate form is continuously moved through a contact reaction zone such that it enters into countercurrent reaction with the feedstock and the reaction is performed in a reaction column equipped with an agitating/moving device by which the halide which is the product of reaction between the organic halide and the oxide is continuously discharged to the outside of the reaction zone.
    Type: Grant
    Filed: May 4, 2004
    Date of Patent: June 6, 2006
    Assignees: Morikawa Industries Corp., Japan Science & Technology Corp.
    Inventors: Taneaki Yahata, Yuji Tsuchiya, Masahiko Toba