Patents by Inventor Katsumi Murofushi

Katsumi Murofushi 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: 20100233596
    Abstract: It is an object of the present invention to provide a photopolymerization initiator composition having high sensitivity and excellent storage properties, a photosensitive composition containing the photopolymerization initiator composition, and a thiourethane compound preferable for the photopolymerization initiator composition. The thiourethane compound of the present invention has 2 to 6 units each of which contains a moiety represented by the following formula (i) and a moiety represented by the following formula (ii). wherein R1 is a hydrogen atom or a methyl group, and R2 is —CO—, —COO— or —COOR3— (wherein R3 is an alkylene group of 2 to 6 carbon atoms).
    Type: Application
    Filed: August 14, 2007
    Publication date: September 16, 2010
    Applicant: SHOWA DENKO K.K.
    Inventors: Haruhiko Ikeda, Hideo Miyata, Yotaro Hattori, Katsumi Murofushi
  • Publication number: 20100210812
    Abstract: It is an object of the present invention to provide a curable composition having excellent curability and capable of forming a cured film which is excellent in surface hardness, scratch resistance, flexibility, bending property, transparency and curling property, and a cured product thereof. The curable composition of the present invention is characterized by comprising (A) a urethane compound represented by the following general formula (1), (B) a thiol compound and (C) a polymerization initiator.
    Type: Application
    Filed: June 26, 2008
    Publication date: August 19, 2010
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoshifumi Urakawa, Nobuaki Ishii, Miyuki Tomita, Yotaro Hattori, Haruhiko Ikeda, Katsumi Murofushi
  • Publication number: 20100160557
    Abstract: An object of the present invention is to provide a reactive urethane compound having superior curability, adhesion to substrates, transparency, molecular flexibility, and mechanical properties, a curable composition containing the compound, and a cured material formed from the composition. An ethylenically-unsaturated-group containing reactive urethane compound of the present invention is represented by formula (I): wherein R1 and R2 are each independently a hydrogen atom or an alkylene group; R3 is a hydrogen atom, a alkyl group, or an aryl group; R4 is a single bond or an alkylene group; R5 is a hydrogen atom or a methyl group; R6 is an oxygen atom, a sulfur atom, or an imino group; n is 2 to 12; m is 1 to 300; and X is an aliphatic, aromatic or heterocyclic compound residue.
    Type: Application
    Filed: May 21, 2008
    Publication date: June 24, 2010
    Applicant: SHOWA DENKO K.K.
    Inventors: Katsumi Murofushi, Nobuaki Ishii, Miyuki Tomita, Yotaro Hattori, Yoshifumi Urakawa
  • Patent number: 7714032
    Abstract: The present invention relates to a thiol compound represented by formula (1): wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist composition using the same which have high sensitivity and excellent property of retaining a line width in fine line patterns at the time of alkaline development, that is, being excellent in development latitude.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: May 11, 2010
    Assignee: Showa Denko K.K.
    Inventors: Hirotoshi Kamata, Mina Onishi, Katsumi Murofushi
  • Publication number: 20100087611
    Abstract: It is an object of the present invention to provide a urethane compound capable of providing a cured product which is excellent in surface hardness, scratch resistance, flexibility and bending property, has reduced curling property and also has good transparency, a curable composition containing the same and a cured product thereof. The curable composition of the present invention is characterized by containing a specific urethane compound having an isocyanurate ring skeleton and a polymerization initiator.
    Type: Application
    Filed: April 24, 2008
    Publication date: April 8, 2010
    Applicant: SHOWA DENKO K.K.
    Inventors: Yoshifumi Urakawa, Nobuaki Ishii, Nobuyuki Mitarai, Yotaro Hattori, Hiroko Oi, Katsumi Murofushi
  • Publication number: 20100047713
    Abstract: Curable compositions have high sensitivity and excellent developability, and further have good storage properties as required. The compositions include a hydroxythiol compound represented by Formula (1) below and a compound with an ethylenically unsaturated double bond: wherein R1 and R2 are each independently a hydrogen atom, a C1-10 alkyl group or an aromatic ring; X is an aliphatic group, an aromatic ring-containing group or a heterocyclic ring-containing group; Y is an ester bond; k and l are each an integer ranging from 1 to 20; m is an integer of 0, 1 or 2; and n is 0 or 1.
    Type: Application
    Filed: November 15, 2007
    Publication date: February 25, 2010
    Applicant: SHOWA DENKO K.K.
    Inventor: Katsumi MUROFUSHI
  • Publication number: 20100029876
    Abstract: A polymerization accelerator includes a specific thiol compound. A curable composition of excellent thermal stability contains the polymerization accelerator. A cured product is obtained from the curable composition. The polymerization accelerator includes a thiol compound having two or more groups represented by Formula (1) below: wherein R1 is a hydrogen atom or a C1-10 alkyl group, and m is an integer of 0, 1 or 2.
    Type: Application
    Filed: June 13, 2007
    Publication date: February 4, 2010
    Inventors: Hideo Miyata, Haruhiko Ikeda, Katsumi Murofushi, Yotaro Hattori, Katsuro Urakawa
  • Patent number: 7622613
    Abstract: The present invention relates to a thiol compound represented by formula (1): wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist composition using the same which have high sensitivity and excellent property of retaining a line width in fine line patterns at the time of alkaline development, that is, being excellent in development latitude.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: November 24, 2009
    Assignee: Showa Denko K.K.
    Inventors: Hirotoshi Kamata, Mina Onishi, Katsumi Murofushi
  • Patent number: 7579066
    Abstract: There are provided a novel ethylenically unsaturated group-containing isocyanate compound, a process for producing the same, and a reactive monomer produced from the isocyanate compound, a reactive polymer and its use. The ethylenically unsaturated group-containing isocyanate compound according to the present invention is represented by formula (I).
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: August 25, 2009
    Assignee: Showa Denko K.K.
    Inventors: Kaneo Nozawa, Katsutoshi Morinaka, Toru Sasaki, Katsumi Murofushi
  • Patent number: 7544536
    Abstract: (1) A metal oxide dispersion for a dye-sensitized solar cell, which contains metal oxide fine particles, a binder composed of a polymer compound having an action to bind to the fine particles and a solvent; (2) a method for producing a photoactive electrode for a dye-sensitized solar cell by coating a dispersion containing the above-mentioned binder and metal oxide fine particles on a sheet-shaped electrode; (3) a photoactive electrode for a dye-sensitized solar cell, obtained by the method, which electrode has metal oxide containing the above-mentioned binder and metal oxide fine particles; and (4) a dye-sensitized solar cell with the above-mentioned photoactive electrode.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: June 9, 2009
    Assignee: Showa Denko K.K.
    Inventors: Katsumi Murofushi, Kunio Kondo, Ryusuke Sato
  • Publication number: 20080286690
    Abstract: The present invention relates to a thiol compound represented by formula (1): wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist composition using the same which have high sensitivity and excellent property of retaining a line width in fine line patterns at the time of alkaline development, that is, being excellent in development latitude.
    Type: Application
    Filed: July 25, 2008
    Publication date: November 20, 2008
    Inventors: Hirotoshi KAMATA, Mina Onishi, Katsumi Murofushi
  • Publication number: 20080139688
    Abstract: The present invention relates to a thiol compound represented by formula (1): wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist composition using the same which have high sensitivity and excellent property of retaining a line width in fine line patterns at the time of alkaline development, that is, being excellent in development latitude.
    Type: Application
    Filed: October 25, 2005
    Publication date: June 12, 2008
    Applicant: SHOWA DENKO K.K.
    Inventors: Hirotoshi Kamata, Mina Onishi, Katsumi Murofushi
  • Publication number: 20080132597
    Abstract: There are provided a novel ethylenically unsaturated group-containing isocyanate compound, a process for producing the same, and a reactive monomer produced from the isocyanate compound, a reactive polymer and its use. The ethylenically unsaturated group-containing isocyanate compound according to the present invention is represented by formula (I).
    Type: Application
    Filed: October 31, 2005
    Publication date: June 5, 2008
    Inventors: Kaneo Nozawa, Katsutoshi Morinaka, Toru Sasaki, Katsumi Murofushi
  • Publication number: 20070083012
    Abstract: There are provided a novel curable polymer compound of the present invention comprises having a structure represented by the following Formula (I): CH2?C(R1)COO(R2O)nCH2CH(OH)CH2OOC— ??Formula (I) wherein R1 represents a hydrogen atom or a methyl group, R2 independently has one or more organic residues selected from the group consisting of an alkylene group, a branched alkylene group, an alkenylene group, a branched alkenylene group, a cycloalkylene group, a cycloalkenylene group and an arylene group, and n represents an integer of 0 to 1, a method of preparing the polymer compound, a radical polymerizable and curable composition using the polymer compound, and a cured product obtained by photo-curing the radical polymerizable and curable composition.
    Type: Application
    Filed: November 1, 2004
    Publication date: April 12, 2007
    Inventors: Masanao Kamijo, Mina Onishi, Katsumi Murofushi
  • Publication number: 20070069338
    Abstract: (1) A metal oxide dispersion for a dye-sensitized solar cell, which contains metal oxide fine particles, a binder composed of a polymer compound having an action to bind to the fine particles and a solvent; (2) a method for producing a photoactive electrode for a dye-sensitized solar cell by coating a dispersion containing the above-mentioned binder and metal oxide fine particles on a sheet-shaped electrode; (3) a photoactive electrode for a dye-sensitized solar cell, obtained by the method, which electrode has metal oxide containing the above-mentioned binder and metal oxide fine particles; and (4) a dye-sensitized solar cell with the above-mentioned photoactive electrode.
    Type: Application
    Filed: November 28, 2006
    Publication date: March 29, 2007
    Inventors: Katsumi Murofushi, Kunio Kondo, Ryusuke Sato
  • Patent number: 7157788
    Abstract: (1) A metal oxide dispersion for a dye-sensitized solar cell, which contains metal oxide fine particles, a binder composed of a polymer compound having an action to bind to the fine particles and a solvent; (2) a method for producing a photoactive electrode for a dye-sensitized solar cell by coating a dispersion containing the above-mentioned binder and metal oxide fine particles on a sheet-shaped electrode; (3) a photoactive electrode for a dye-sensitized solar cell, obtained by the method, which electrode has metal oxide containing the above-mentioned binder and metal oxide fine particles; and (4) a dye-sensitized solar cell with the above-mentioned photoactive electrode.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: January 2, 2007
    Assignee: Showa Denko K.K.
    Inventors: Katsumi Murofushi, Kunio Kondo, Ryusuke Sato
  • Publication number: 20050258406
    Abstract: The present invention relates to a black resist composition for color filter which contains titanium black (A) with an average primary particle size of 100 nm, carbon black (B) with an average primary particle size of 60 nm or less, an acrylic copolymer dispersant (C) with an amino group and/or a quaternary ammonium salt, an organic solvent (D) and a binder resin (E) with a carboxyl group and an ethylenic unsaturated group, where the ratio in mass between the titanium black (A) and the titanium black (B) is 100:5 to 1000. According to the black resist composition for color filter of the present invention, patterns can readily be formed by photolithography, and the composition has high light resistance and high insulation property, and can be made into a thin film to attain sufficient sensitivity and resolution property.
    Type: Application
    Filed: May 13, 2005
    Publication date: November 24, 2005
    Inventors: Mina Onishi, Masanao Kamijo, Katsumi Murofushi
  • Publication number: 20040157140
    Abstract: A photosensitive coloring composition for color filters using coloring compositons containd (A) a binder resin having an amido group and a carboxyl group and (B) a coloring material has excellent photosensitivity and has improved dispersibility upon producing in particular a coloring composition containing a black pigment such as a carbon black. Use of (A) an epoxy(meth)acrylate resin can further improve the photosensitivity and from a black matrix having sufficient film strenght and low reflectivity. Furhter, use of a modified carbon black treated with a compound having a isocyanate group and an ethylenically unsaturaged bond in a molecule as the coloring material can give rise to a photosensitive resin composition excellent in optically opaque property, photosensitivity and dispersion stability.
    Type: Application
    Filed: November 12, 2003
    Publication date: August 12, 2004
    Inventors: Hirotoshi Kamata, Mina Onishi, Tsuyoshi Katoh, Yoshio Miyajima, Katsumi Murofushi
  • Publication number: 20040067613
    Abstract: (1) A metal oxide dispersion for a dye-sensitized solar cell, which contains metal oxide fine particles, a binder composed of a polymer compound having an action to bind to the fine particles and a solvent; (2) a method for producing a photoactive electrode for a dye-sensitized solar cell by coating a dispersion containing the above-mentioned binder and metal oxide fine particles on a sheet-shaped electrode; (3) a photoactive electrode for a dye-sensitized solar cell, obtained by the method, which electrode has metal oxide containing the above-mentioned binder and metal oxide fine particles; and (4) a dye-sensitized solar cell with the above-mentioned photoactive electrode.
    Type: Application
    Filed: August 21, 2003
    Publication date: April 8, 2004
    Inventors: Katsumi Murofushi, Kunio Kondo, Ryusuke Sato
  • Patent number: 6033829
    Abstract: An ultraviolet and/or visible light curing photopolymerizable composition comprising as essential components: (a) a thermoplastic polymer obtained by copolymerization of at least one monomer selected from among .alpha.,.beta.-unsaturated carboxyl group-containing monomers and another monomer, (b) a crosslinking monomer with at least two ethylenic unsaturated groups per molecule and (c) an ultraviolet and/or visible light polymerization initiator comprising a quaternary boron salt and a sensitizing dye, as well as a dry film resist containing the composition as its main component.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: March 7, 2000
    Assignee: Showa Denko K.K.
    Inventors: Morihiko Yamada, Tsuyoshi Katoh, Katsumi Murofushi