Patents by Inventor Kazuyuki Hayashi

Kazuyuki Hayashi 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).

  • Organic and inorganic composite pigments, and paint and resin composition using the same
    Patent number: 6596071
    Abstract: Organic and inorganic composite pigments having an average particle diameter of 0.01 to 10.0 &mgr;m composed of a white inorganic particle, an organosilane compound obtained from alkoxysilanes, or polysiloxanes coating on the white inorganic particle, and an organic pigment coat formed on said coating. An ultraviolet light-absorbing agent is present in any portion from the surface of the white inorganic particle to surface of the organic pigment coat. These composite pigments have reduced amounts of organic pigments desorbed from their surface and exhibit excellent light resistance due to their ultraviolet absorbing property.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: July 22, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Kazuyuki Hayashi, Keisuke Iwasaki, Mineko Ohsugi, Yusuke Shimohata, Hiroko Morii
  • Black colorant for ink-jet printing ink, ink-jet printing ink, and aqueous pigment dispersion containing the black colorant
    Publication number: 20030131761
    Abstract: A black colorant for ink-jet printing ink, has an average particle diameter of 0.001 to 0.
    Type: Application
    Filed: June 6, 2002
    Publication date: July 17, 2003
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Keisuke Iwasaki
  • Magnetic composite particles for magnetic recording medium, process for producing the same and magnetic recording medium the same
    Publication number: 20030134152
    Abstract: Magnetic composite particles of the present invention comprise:
    Type: Application
    Filed: November 5, 2002
    Publication date: July 17, 2003
    Applicant: TODA KOGYO
    Inventors: Kazuyuki Hayashi, Mineko Ohsugi, Mamoru Kamigaki, Hiroko Morii
  • Coloring composition for color filter containing colorant and color filter using the same
    Publication number: 20030116758
    Abstract: A coloring composition for a color filter, comprises:
    Type: Application
    Filed: September 25, 2002
    Publication date: June 26, 2003
    Inventors: Hiroko Morii, Keisuke Iwasaki, Kazuyuki Hayashi
  • Weather strip
    Publication number: 20030106268
    Abstract: A elastic member of weatherstrip has a base portion with nearly U-shaped section, lips extending from ends of the base portion. An edge of a door glass is adapted to be accommodated in an accommodating portion provided in the elastic member. Each of the inner wall of the accommodating portion, and the inner walls and the outer walls of the lips is covered with a surface treatment layer having a predetermined film thickness. In contrast, the outer wall of the base portion is not covered. An embossing for obtaining a surface like a pearskin-finished one with a surface irregularity is preliminarily performed on the outer wall of the base portion and the outer wall of each of the lips, so that the surface has gloss and color close to those of the surface treatment layer.
    Type: Application
    Filed: December 11, 2002
    Publication date: June 12, 2003
    Inventors: Kenji Kobayashi, Tsuyoshi Shimizu, Taketoshi Ito, Kazuyuki Hayashi, Kenichi Tsuboi
  • Composite particles, and tread rubber composition, paint and resin composition using the same
    Publication number: 20030105213
    Abstract: Composite particles capable of an excellent dispersibility and an excellent light resistance of the present invention have an average particle diameter of 0.001 to 12.
    Type: Application
    Filed: May 13, 2002
    Publication date: June 5, 2003
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Keisuke Iwasaki, Mineko Ohsugi, Yusuke Shimohata
  • Organic and inorganic composite pigments, and paint and resin composition using the same
    Publication number: 20030101908
    Abstract: Organic and inorganic composite pigments have an average particle diameter of 0.01 to 10.
    Type: Application
    Filed: June 11, 2002
    Publication date: June 5, 2003
    Inventors: Kazuyuki Hayashi, Keisuke Iwasaki, Mineko Ohsugi, Yusuke Shimohata, Hiroko Morii
  • Magnetic recording medium and magnetic composite particles or magnetic recording medium
    Patent number: 6569530
    Abstract: A magnetic recording medium comprises: a non-magnetic base film; and a magnetic recording layer comprising a binder resin and magnetic composite particles having an average particle diameter of 0.02 to 0.70 &mgr;m, comprising magnetic particles as core particles, a coating formed on surface of said magnetic particle, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a phthalocyanine-based pigments coat formed on said coating layer comprising said organosilicon compound, in an amount of 1 to 100 parts by weight based on 100 parts by weight of said magnetic particles.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: May 27, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Kazuyuki Hayashi, Keisuke Iwasaki, Mamoru Kamigaki, Hiroko Morii
  • Plastic film, and shopping bag and garbage bag produced from the same
    Publication number: 20030091764
    Abstract: A plastic film which has a low hiding power and an improved heat resistance, and which exhibits an excellent color, is free from discoloration upon molding and shows a more excellent combustion efficiency upon incineration, and which comprises:
    Type: Application
    Filed: April 24, 2002
    Publication date: May 15, 2003
    Inventors: Yasuhiko Fujii, Toshiki Matsui, Minoru Ohsugi, Kazuyuki Hayashi, Mineko Ohsugi, Hiroko Morii, Tomoko Okita
  • Black magnetic toner and black magnetic composite particles therefor
    Patent number: 6562532
    Abstract: Black magnetic toner comprising: a binder resin; and black magnetic composite particles having an average particle diameter of 0.06 to 1.0 &mgr;m comprising: magnetic iron oxide particles, a coating layer formed on the surface of the magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a single carbon black coat formed on the coating layer comprising the organosilicon compound, in an amount of 26 to 55 parts by weight based on 100 parts by weight of the magnetic iron oxide particles.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: May 13, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Seiji Ishitani
  • Black magnetic toner
    Publication number: 20030073016
    Abstract: Black magnetic toner comprising:
    Type: Application
    Filed: May 10, 2002
    Publication date: April 17, 2003
    Applicant: Toda Kogyo Corp.
    Inventors: Kazuyuki Hayashi, Hiroko Morll, Yasuyuki Tanaka, Seiji Ishitani
  • Non-magnetic composite particles, process for producing the same and magnetic recording medium using the same
    Patent number: 6544647
    Abstract: Non-magnetic composite particles composed of non-magnetic core particles having an average particle size of 0.01 to 0.3 &mgr;m, and inorganic fine particles having an average particle size of 0.001 to 0.07 &mgr;m. The fine particles are present in an amount of 0.1 to 20% by weight based on the weight of the non-magnetic particles are on the surface of each non-magnetic particle, and are fixed or anchored on the surface of each non-magnetic particle through a silicon compound.The non-magnetic composite particles have a high polishing effect and a high dispersibility, and are useful as a non-magnetic undercoat layer for a magnetic recording medium.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: April 8, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Kazuyuki Hayashi, Keisuke Iwasaki, Hiroko Morii, Mineko Ohsugi
  • Colorant for ink-jet printing ink, ink-jet printing ink, aqueous pigment dispersion containing the colorant, and organic and inorganic composite particles
    Publication number: 20030056693
    Abstract: A colorant for ink-jet printing ink of the present invention, has an average particle diameter of 0.001 to 0.15 &mgr;m, and comprises: extender pigments as core particles; a gluing agent coating layer formed on at least a part of surface of said core particle; and an organic pigment coat uniformly formed on at least a part of said gluing agent coating layer. The colorant for ink-jet printing ink exhibits not only a high tinting strength and a clear hue, but also excellent dispersibility and light resistance in spite of fine particles.
    Type: Application
    Filed: June 4, 2002
    Publication date: March 27, 2003
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Keisuke Iwasaki
  • Black plate-shaped ferrite composite particles with magnet oplumbite structure and magnetic recording medium using the same
    Patent number: 6531211
    Abstract: Black plate-shaped ferrite composite particles with magnetoplumbite structure, particle size of 0.01 to 0.2 &mgr;m are surface coated with an organosilicon compound(s) and a carbon black coating is applied over the organosilicon coating layer. Optionally, a coating of silicon or aluminum oxide or hydroxide is provided on the surface of the black plate-shaped composite particles and below the organosilicon layer. The particles have a high blackness and when applied to a non-magnetic substrate with a binder resin to form a magnetic medium provide low light transmittance, low surface resistivity and a smooth surface.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: March 11, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Mamoru Kamigaki, Yasuyuki Tanaka, Keisuke Iwasaki
  • Black magnetic acicular composite particles for magnetic recording medium and magnetic recording medium using the same
    Publication number: 20030027018
    Abstract: A magnetic recording medium using black magnetic acicular composite particles produced by forming a single carbon black coat between the surface of magnetic acicular cobalt-coated iron oxide particle or magnetic acicular metal particle and a coating comprising at least one organosilicon compound, in an amount of from more than 10 to 40 parts by weight based on 100 parts by weight of the magnetic acicular particles, exhibits not only a smooth surface, a smaller light transmittance and a lower surface electrical resistivity value, but also a small friction coefficient and an excellent running durability.
    Type: Application
    Filed: May 22, 2002
    Publication date: February 6, 2003
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Mamoru Kamigaki, Yasuyuki Tanaka, Keisuke Iwasaki
  • Color toner
    Publication number: 20030022085
    Abstract: A color toner comprises: a binder resin, and a colorant having an average particle diameter of 0.005 to 0.
    Type: Application
    Filed: April 25, 2002
    Publication date: January 30, 2003
    Inventors: Kazuyuki Hayashi, Keisuke Iwasaki, Hiroko Morii
  • Magnetic recording medium containing specific non-magnetic composite particles of coated hematite particles
    Patent number: 6511733
    Abstract: A magnetic recording medium comprises: a non-magnetic base film; a magnetic recording layer formed on one surface of the non-magnetic base film, comprising a binder resin and magnetic particles; and a back coat layer formed on a surface opposite of the non-magnetic base film to the surface on which the magnetic recording layer is formed, comprising a binder resin and plate-shaped non-magnetic composite particles having an average plate surface diameter of 0.1 to 5.0 &mgr;m, an average thickness of 0.001 to 0.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: January 28, 2003
    Assignee: Toda Kogyo Corporation
    Inventors: Kazuyuki Hayashi, Mamoru Kamigaki, Hiroko Morii
  • Composite magnetic metal particles containing iron as a main component, process for producing the same and magnetic recording medium
    Publication number: 20020192504
    Abstract: Composite magnetic metal particles containing iron as a main component, comprise: magnetic metal particles containing iron as a main component, and a polyether-modified polysiloxane coat formed on surface of the magnetic metal particles in an amount of 0.02 to 10% by weight, calculated as Si, based on the weight of the composite magnetic metal particles containing iron as a main component; and have an average major axis diameter of 0.02 to 0.30 &mgr;m and a soluble sodium salt content of not more than 10 ppm.
    Type: Application
    Filed: April 24, 2002
    Publication date: December 19, 2002
    Inventors: Mamoru Kamigaki, Hiroko Morii, Kazuyuki Hayashi
  • Black magnetic toner and black magnetic composite particles therefor
    Publication number: 20020192584
    Abstract: Black magnetic toner comprising:
    Type: Application
    Filed: February 12, 2002
    Publication date: December 19, 2002
    Inventors: Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Seiji Ishitani
  • Weather strip for movable roof
    Patent number: 6490833
    Abstract: A weather strip is attached to the periphery of an organic glass plate. The organic glass plate is supported by a slide panel. A space is defined between the weather strip and an end face of the periphery of the organic glass plate. The space accommodates thermal expansion of the organic glass plate. A tube is located at a corner of the weather strip. Foreign matter trapped in the space moves from the space to the tube and then is discharged from the space.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: December 10, 2002
    Assignees: Toyoda Gosei Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Teruhito Goto, Kazuyuki Hayashi, Akira Matsuura, Yasuo Oyama, Kotaro Oami