Patents by Inventor Hiroyasu Nishida

Hiroyasu Nishida 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: 6827639
    Abstract: In polishing particles each having a core-shell structure, a polishing rate can be controlled by adjusting a thickness and/or density of a shell portion. The polishing particles have the core-shell structure with an average diameter in the range from 5 to 300 nm, and the shell portion of the polishing particles includes silica with a thickness in the range from 1 to 50 nm. A density of the shell portion is in the from 1.6 to 2.2 g/cc, while the Na content of the shell portion is less than 10 ppm.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: December 7, 2004
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Yoshinori Wakamiya, Michio Komatsu
  • Patent number: 6777069
    Abstract: The transparent film-coated substrate includes a substrate and a transparent coating film formed on the surface of the substrate, the transparent coating film comprising (i) a matrix containing a silicone having a fluorine-substituted alkyl group, and (ii) inorganic compound particles comprising a shell, and a porous matter or a cavity enclosed therein, wherein the porous matter or the cavity remains unchanged in the formed transparent coating film.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: August 17, 2004
    Assignees: Kabushiki Kaisha Toshiba, Asahi Glass Co., Ltd., Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Takeo Ito, Hidemi Matsuda, Yoshimi Otani, Kazuhiko Yui, Toshiharu Hirai, Hiroyasu Nishida, Michio Komatsu
  • Patent number: 6740702
    Abstract: The invention provides a recording sheet having an ink-receiving layer, which comprises a substrate sheet and an ink-receiving layer formed thereon, said ink-receiving layer comprising oxide particles, wherein the ink-receiving layer has pores having a diameter in the range of 3.4 to 2,000 nm, the pore volume of pores having a diameter of 3.4 to 30 nm is in the range of 0.2 to 1.8 ml/g, and the pore volume of pores having a diameter of 30 to 2,000 nm is in the range of 0.1 to 1.5 ml/g. It is preferable that the oxide particles have an average particle diameter of 2 to 1,000 nm and are a mixture of hydrophobic oxide particles and hydrophilic oxide particles. This recording sheet shows sufficient strength, has excellent printability such that images of uniform density and high sharpness can be printed thereon without bleeding, and is excellent in water resistance, weathering resistance and fading resistance.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: May 25, 2004
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Mitsuru Nakai, Michio Komatsu
  • Patent number: 6680040
    Abstract: The porous composite oxide particle is coated with a porous silica-based inorganic oxide layer, and also a substrate has a coating film with the fine particles thereon, which has a low refractive index and excellent in adhesion with a resin or the like, strength, the ability to reduce reflection and the like. The fine particles include porous composite oxide with silica and an inorganic oxide other than silica, wherein the fine particles are coated with a porous silica-based inorganic oxide layer having a thickness from 0.5 to 20 nm. The fine particles include preferably an organic group directly bonded to silicon, and SR/ST, the ratio of the molar amount of silicon having the organic group directly bonded thereto (SR) vs the molar amount of the total silicon (ST), is preferably in the range from 0.001 to 0.9.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: January 20, 2004
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Mitsuru Nakai, Michio Komatsu, Hiroo Yoshitome
  • Patent number: 6669748
    Abstract: The present invention provides a dispersion liquid of silica particles for polishing with a low content of Na ions and also with a content of ions other than Na ions in a prespecified range. This dispersion liquid is a dispersion liquid of silica particles in which the silica particles having the average particle diameter in the range from 5 to 300 nm is dispersed, and a content of Na ions in the silica particle is less than 100 ppm, while a contents of ions other than Na ions is in the range from 300 ppm to 2 weight %.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: December 30, 2003
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Yoshinori Wakamiya, Manabu Watanabe, Michio Komatsu
  • Publication number: 20030193037
    Abstract: The inorganic compound sol of the present invention comprises a dispersion medium and, dispersed therein, inorganic compound particulates whose surface has been modified by an organic compound exhibiting a molecular polarizability of from 2×10−40 to 850×10−40 C2m2J−1. This inorganic compound sol modified by an organic compound has desirable affinity with dispersion media, so that its dispersion stability in solvents is excellent without aggregation of particulates.
    Type: Application
    Filed: March 11, 1998
    Publication date: October 16, 2003
    Inventors: TSUGUO KOYANAGI, HIROYASU NISHIDA
  • Publication number: 20030186634
    Abstract: In the polishing particles each having a core-shell structure, the polishing rate can be controlled by adjusting the thickness and/or density of the shell portion. The polishing particles having the core-shell structure with the average diameter (D) in the range from 5 to 300 nm, and the shell portion of the polishing particles comprises silica with the thickness (ST) in the range from 1 to 50 nm, and the density of the shell portion is in the range from 1.6 to 2.2 g/cc, while the Na content of the shell portion is less than 10 ppm.
    Type: Application
    Filed: March 24, 2003
    Publication date: October 2, 2003
    Applicant: CATALYSTS & CHEMICALS INDUSTRIES CO., LTD.
    Inventors: Hiroyasu Nishida, Yoshinori Wakamiya, Michio Komatsu
  • Publication number: 20030157317
    Abstract: A transparent film-coated substrate is provided which has a transparent film having a low refractive index, and a less shrinking property; and being excellent in adhesiveness to a substrate or a transparent electroconductive film formed on the substrate, and in the film strength, the water resistance, the chemical resistance, and so forth.
    Type: Application
    Filed: November 8, 2002
    Publication date: August 21, 2003
    Inventors: Takeo Ito, Hidemi Matsuda, Yoshimi Otami, Kazuhiko Yui, Toshiharu Hirai, Hiroyasu NIshida, MIchio Komatsu
  • Publication number: 20030089276
    Abstract: The present invention provides amorphous inorganic particles as a dental material comprising silica and inorganic oxide(s) other than silica and having high x-ray impermeability. The inorganic particles as a dental material comprise silica with the content in the range from 70 to 98 weight % and oxide(s) of one or more elements selected from the group consisting of Zr, Ti, La, Ba, Sr, Hf, Y, Zn, AL, and B, wherein 5 to 70 weight % of the silica is originated from an acidic silicic acid solution and 30 to 95 weight % of the silica is originated from a sol of silica. This inorganic particles as a dental material have average particle diameter in the range from 1 to 10 &mgr;m, specific surface area in the range from 50 to 350 m2/g, pore volume in the range from 0.05 to 0.5 ml/g, amorphous crystallinity as observed by x-ray diffraction, and the refractive index in the range from 1.47 to 1.60.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 15, 2003
    Applicant: CATALYSTS & CHEMICALS INDUSTRIES CO., LTD.
    Inventors: Hiroyasu Nishida, Noboru Senju, Michio Komatsu
  • Publication number: 20030068893
    Abstract: The present invention provides a dispersion liquid of silica particles for polishing with a low content of Na ions and also with a content of ions other than Na ions in a prespecified range. This dispersion liquid is a dispersion liquid of silica particles in which the silica particles having the average particle diameter in the range from 5 to 300 nm is dispersed, and a content of Na ions in the silica particle is less than 100 ppm, while a contents of ions other than Na ions is in the range from 300 ppm to 2 weight %.
    Type: Application
    Filed: September 26, 2002
    Publication date: April 10, 2003
    Inventors: Hiroyasu Nishida, Yoshinori Wakamiya, Manabu Watanabe, Michio Komatsu
  • Publication number: 20030054077
    Abstract: Finings comprising a silica sol which is added to beer during the lagering process have at least two peaks in the particle size distribution curve of the colloidal particles of said silica sol, of which particle diameters Dp and Dq are in the range of 20 nm Dp 40 nm and 150 nm Dq 600 nm, respectively.
    Type: Application
    Filed: May 20, 2002
    Publication date: March 20, 2003
    Applicant: KIRIN BEER KABUSHIKI KAISHA
    Inventors: Yoshihisa Ishiwata, Takeshi Ohnogi, Hiroyasu Nishida, Mitsuru Nakai, Akihiko Okada
  • Publication number: 20030031840
    Abstract: The invention provides a recording sheet having an ink-receiving layer, which comprises a substrate sheet and an ink-receiving layer formed thereon, said ink-receiving layer comprising oxide particles, wherein the ink-receiving layer has pores having a diameter in the range of 3.4 to 2,000 nm, the pore volume of pores having a diameter of 3.4 to 30 nm is in the range of 0.2 to 1.8 ml/g, and the pore volume of pores having a diameter of 30 to 2,000 nm is in the range of 0.1 to 1.5 ml/g. It is preferable that the oxide particles have an average particle diameter of 2 to 1,000 nm and are a mixture of hydrophobic oxide particles and hydrophilic oxide particles. This recording sheet shows sufficient strength, has excellent printability such that images of uniform density and high sharpness can be printed thereon without bleeding, and is excellent in water resistance, weathering resistance and fading resistance.
    Type: Application
    Filed: June 17, 2002
    Publication date: February 13, 2003
    Applicant: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Mitsuru Nakai, Michio Komatsu
  • Patent number: 6447881
    Abstract: The invention provides a recording sheet having an ink-receiving layer, which comprises a substrate sheet and an ink-receiving layer formed thereon, said ink-receiving layer comprising oxide particles, wherein the ink-receiving layer has pores having a diameter in the range of 3.4 to 2,000 nm, the pore volume of pores having a diameter of 3.4 to 30 nm is in the range of 0.2 to 1.8 ml/g, and the pore volume of pores having a diameter of 30 to 2,000 nm is in the range of 0.1 to 1.5 ml/g. It is preferable that the oxide particles have an average particle diameter of 2 to 1,000 nm and are a mixture of hydrophobic oxide particles and hydrophilic oxide particles. This recording sheet shows sufficient strength, has excellent printability such that images of uniform density and high sharpness can be printed thereon without bleeding, and is excellent in water resistance, weathering resistance and fading resistance.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: September 10, 2002
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Mitsuru Nakai, Michio Komatsu
  • Patent number: 5935700
    Abstract: A thermoplastic resin film excellent in slipperiness, wear resistance and transparency contains 0.05 to 0.5 wt. % of specified fine particles of composite oxide comprising silica, alkali metal oxide, and at least one inorganic oxide other than silica, wherein the fine particles satisfies the following expression (I):S .gtoreq.10,000/(Dp*SG) (I)wherein S indicates the specific surface area (m.sup.2 /g) of the fine particles of composite oxide, Dp indicates the average diameter (nm) of the fine particles, and SG indicates the true specific gravity thereof. The film is preferably a polyester film having a hazing value of 5% or less. It is suitable for use as magnetic tape, capacitor, photographic film and pressure-sensitive adhesive tape.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: August 10, 1999
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Naoyuki Enomoto, Hiroyasu Nishida, Michio Komatsu
  • Patent number: 5880201
    Abstract: A thermoplastic resin film excellent in slipperiness, wear resistance and transparency. The film contains 0.005 to 20 wt. % of specified fine particles of composite oxide comprising silica and at least one inorganic oxide other than silica. The film is preferably a polyester film having a hazing value of 5 % or less. It is suitable for use as magnetic tape, capacitor, photographic film and pressure-sensitive adhesive tape. The film is manufactured by adding a silicate of alkali metals, ammonium or organic bases and an alkali-soluble inorganic compound simultaneously to an alkali solution with pH 9 or above, generating fine particles of composite oxide without any control of the pH of this reaction solution, adding the obtaind sol to a thermoplastic resin and/or the reaction system thereof, and processing of a film.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: March 9, 1999
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Naoyuki Enomoto, Hiroyasu Nishida, Michio Komatsu
  • Patent number: 5785892
    Abstract: An organo-antimony oxide sol capable of affording an electrical conductivity property and a photo-setting coating composition containing such a sol are provided. The particulate colloidal antimony oxide, i.e. a dispersoid in the sol, has a pyrochlore structure and is surface-treated with an organo-silicon compound of the formula ##STR1## wherein R.sup.2 is hydrogen or a C.sub.1 -C.sub.5 alkyl group; R.sup.3 is hydrogen or a C.sub.1 -C.sub.5 alkyl group; R.sup.4 is a C.sub.1 -C.sub.8 alkylene group; R.sup.5 is hydrogen or a C.sub.1 -C.sub.8 alkyl group; i is an integer of 1-3; j is an integer of 0-2; and k is an integer of 1-3 equal to i+j.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: July 28, 1998
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Hiroyasu Nishida, Yoshichika Tanaka, Michio Komatsu, Teruo Migita
  • Patent number: 4987012
    Abstract: In a process for preparing spherical particles of hydroxide having a particle diameter of from 0.1 to 10 .mu.m by adding a corresponding metal alkoxide to a dispersion of water-alcohol system having dispersed therein a metal oxide or hydroxide as a seed, under alkaline conditions and allowing a decomposition product from said metal alkoxide to attach onto said seed to effect particle growth of the seed, the improvement which comprises maintaining said dispersion at a substantially constant pH within the range between 10 and 13 during the addition of the metal alkoxide to said dispersion and the subsequent particle growth of the seed, thereby to prepare mono-dispersed particles substantially free from particle aggregation having a sharp particle size distribution of a standard deviation of not greater than 0.5. The white particles so prepared may be, after separation, heat treated to provide black particles. The white or black particles may be coated with a synthetic resin in the surface.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: January 22, 1991
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Goro Sato, Michio Komatsu, Hiroyasu Nishida, Yoshichika Tanaka, Tsuguo Koyanagi, Kei-ichi Mihara
  • Patent number: 4925704
    Abstract: In a process for preparing spherical particles of a metal oxide or hydroxide having a particle size of from 0.1 to 10 .mu.m by adding a corresponding metal alkoxide to a dispersion of water-alcohol system having dispersed therein a metal oxide or hydroxide as a seed, under alkaline conditions and allowing a decomposition product from said metal alkoxide to attach onto said seed to effect particle growth of the seed, the improvement which comprises maintaining said dispersion at a substantially constant pH within the range between 10 and 13 during the addition of the metal alkoxide to said dispersion and the subsequent particle growth of the seed, thereby to prepare mono-dispersed particles substantially free from particle aggregation having a sharp particle size distribution of a standard deviation of not greater than 0.5. The white particles so prepared may be, after separation, heat treated to provide black particles. The white or black particles may be coated with a synthetic resin in the surface.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: May 15, 1990
    Assignee: Catalsts & Chemicals Industries Co., Ltd.
    Inventors: Goro Sato, Michio Komatsu, Hiroyasu Nishida, Yoshichika Tanaka, Tsuguo Koyanagi, Kei Mihara