Patents by Inventor Yukihiro Ikegami

Yukihiro Ikegami 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: 7928175
    Abstract: An object of the present invention is to provide an antifouling paint composition which shows an excellent antifouling effect in seawater for a long period of time, and has excellent adhesion and recoating properties to a substrate. The present invention relates to an antifouling pain composition comprising a copolymer which is obtained by polymerizing a monomer mixture comprising silicon-containing polymerizable monomer (a) having two (meth)acryl end groups, and which contains bivalent metal atom. The copolymer is also obtained by polymerizing a monomer mixture comprising silicon-containing polymerizable monomer (b) having one (meth)acryl end group, and metal atom containing polymerizable monomer (c,) having two unsaturated groups and metal atom selected from Mg, Zn, and Cu.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: April 19, 2011
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Mitsunori Sugihara, Yukihiro Ikegami, Kazuhiko Hotta, Kunio Iwase, Junichi Nakamura
  • Publication number: 20060258772
    Abstract: An object of the present invention is to provide an antifouling paint composition which shows an excellent antifouling effect in seawater for a long period of time, and has excellent adhesion and recoating properties to a substrate. The present invention relates to an antifouling pain composition comprising a copolymer which is obtained by polymerizing a monomer mixture comprising silicon-containing polymerizable monomer (a) having two (meth)acryl end groups, and which contains bivalent metal atom. The copolymer is also obtained by polymerizing a monomer mixture comprising silicon-containing polymerizable monomer (b) having one (meth)acryl end group, and metal atom containing polymerizable monomer (c1) having two unsaturated groups and metal atom selected from Mg, Zn, and Cu.
    Type: Application
    Filed: March 12, 2004
    Publication date: November 16, 2006
    Applicant: Mitsubishi Rayon Co. Ltd.
    Inventors: Mitsunori Sugihara, Yukihiro Ikegami, Kazuhiko Hotta, Kunio Iwase, Junichi Nakamura
  • Patent number: 6727304
    Abstract: A metal-containing monomer dissolved mixture comprising a reaction product of an inorganic metal compound with a carboxyl group-containing radical polymerizable monomer, an organic solvent including at least an alcohol-based solvent, and water, wherein the water content is from 0.01 to 30% by weight; a metal-containing resin obtained by copolymerizing the metal-containing monomer (A) in this dissolved mixture with the other radical-polymerizable unsaturated monomer (B); an antifouling paint composition obtained by using this metal-containing resin; and an antifouling paint composition comprising a divalent metal-containing resin (C), a compound (D) of R1—SH (wherein, R1 represents an organic group having 1 to 30 carbon atoms.), and copper oxide (E), are disclosed.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: April 27, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Mitsunori Sugihara, Yukihiro Ikegami, Kazuhiko Hotta, Toshio Nagasaka, Kunio Iwase
  • Publication number: 20020019457
    Abstract: A metal-containing monomer dissolved mixture comprising a reaction product of an inorganic metal compound with a carboxyl group-containing radical polymerizable monomer, an organic solvent including at least an alcohol-based solvent, and water, wherein the water content is from 0.01 to 30% by weight; a metal-containing resin obtained by copolymerizing the metal-containing monomer (A) in this dissolved mixture with the other radical-polymerizable unsaturated monomer (B); an antifouling paint composition obtained by using this metal-containing resin; and an antifouling paint composition comprising a divalent metal-containing resin (C), a compound (D) of R1—SH (wherein, R1 represents an organic group having 1 to 30 carbon atoms.), and copper oxide (E), are disclosed.
    Type: Application
    Filed: June 22, 2001
    Publication date: February 14, 2002
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Mitsunori Sugihara, Yukihiro Ikegami, Kazuhiko Hotta, Toshio Nagasaka, Kunio Iwase
  • Patent number: 6323259
    Abstract: The present invention is directed to an acrylic resin composition obtained by adding a non-crosslinked polymer powder having a bulk density within the range from 0.1 to 0.7 g/ml, an oil absorption based on linseed oil within the range from 60 to 200 ml/100 g and a degree of swelling by methyl methacrylate of 16-fold or more as a thickening agent to acrylic syrup; and acrylic premix obtained by mixing an inorganic filler with this composition; and acrylic premix obtained by extruding constituent components by a kneading extruder to continuously form the mixture; and a method for producing an acrylic artificial marble in which these acrylic premixes are cured.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: November 27, 2001
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yukihiro Ikegami, Seiya Koyanagi, Yuichiro Kishimoto, Yoshihito Nakahara
  • Patent number: 6288174
    Abstract: An acrylic polymer powdery material, which is a particularly useful powdery material as a modifier for cementitious material, comprising fine particles of a core-shell structure comprising a core polymer being comprised of an acrylic polymer having a glass transition temperature (Tg) of −20-+15° C., a weight average molecular weight of 100000-2000000, an acid value of 25 mg KOH/g or less and a shell polymer being comprised of an acrylic polymer having a Tg of 50-90° C., a weight average molecular weight of 100000-2000000, an acid value of 30-130 mg KOH/g, wherein the weight ratio of the core polymer and shell polymer is 30/70-80/20 (% by weight).
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: September 11, 2001
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Yukihiro Ikegami, Toshihiro Kasai
  • Patent number: 5277840
    Abstract: A phosphor paste composition is disclosed, which uses as an organic binder an acrylic polymer obtained by copolymerizing an alkyl methacrylate as a principal component with a specific amount of at least one monomer selected from unsaturated carboxylic acids and hydroxyalkyl (meth)acrylates. Also disclosed is a phosphor paste composition making use of a phosphor having a volume average particle size in a range of 1-7 .mu.m, with particles having a particle size of 1-9 .mu.m accounting for at least 60 wt.%. These phosphor paste compositions have excellent firing characteristics and provide phosphor coatings excellent in both light-emitting characteristics and resolution.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: January 11, 1994
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norihisa Osaka, Yukihiro Ikegami
  • Patent number: 5256463
    Abstract: A method for manufacturing a phosphor screen used in a color CRT takes the steps of multilayering a red phosphor layer, a green phosphor layer, a blue phosphor layer, and a non-luminescent layer being laid between the adjacent color phosphor layer, cutting the multilayered block into filmy pieces toward the thickness, adhering or pressurizing the filmy cut pieces on a glass plate for front panel of the color CRT, and burning the cut pieces. This method makes it possible to efficiently manufacture a high-definition and high-resolution color phosphor screen and form fine RGB stripes. This method, thus, may apply to a small-sized CRT about which the realization of the high-definition and high-resolution color phosphor screen has been difficult.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: October 26, 1993
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norihisa Osaka, Yukihiro Ikegami
  • Patent number: 5208065
    Abstract: A process is described for the formation of an undercoat which is in turn useful in forming a CRT metal back layer. According to the process, a pretreatment composition is coated on a glass panel having a fluorescent layer overlaid thereon, so that a water film is formed. The pretreatment composition is composed of 2-20 wt. % of an alkyl monoalcohol having a C.sub.1-3 alkyl group, 0.05-1 wt. % of a water-soluble, high molecular compound and 79-97.95 wt. % of water. An undercoating composition is then coated on the water film by a wet-on-wet coating method, whereby a coating layer is formed. The undercoating composition is composed of 1-7 parts by weight of an acrylic resin, which has been obtained by polymerizing 90-100 wt. % of an alkyl methacrylate having a C.sub.1-4 alkyl group other than tertbutyl methacrylate and 0-10 wt. % of an ethylenically unsaturated monomer copolymerizable therewith, and 99-93 parts by weight of a solvent containing at least 80 wt. % of toluene.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: May 4, 1993
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norihisa Osaka, Yukihiro Ikegami, Kiichiro Ishiguro, Shuichiro Tokuda, Masanori Itakura
  • Patent number: 5132045
    Abstract: A phosphor paste composition is disclosed, which uses as an organic binder an acrylic polymer obtained by copolymerizing an alkyl methacrylate as a principal component with a specific amount of at least one monomer selected from unsaturated carboxylic acids and hydroxyalkyl (meth)acrylates. Also disclosed is a phosphor paste composition making use of a phosphor having a volume average particle size in a range of 1-7 .mu.m, with particles having a particle size of 1-9 .mu.m accounting for at least 60 wt. %. These phosphor paste compositions have excellent firing characteristics and provide phosphor coatings excellent in both light-emitting characteristics and resolution.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: July 21, 1992
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Norihisa Osaka, Yukihiro Ikegami