Patents by Inventor Ichiro Igarashi

Ichiro Igarashi 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: 6503961
    Abstract: An active energy beam-curable adhesive composition is provided. The adhesive composition comprises (A), (B), and if required, (C) components. The component (A) is urethane (meth)acrylate derived from polyester polyol or polycarbonate polyol. The component (B) is a compound having at least one ethylenically unsaturated group together with at least one a cyclic imide group represented by the following general formula (1) .
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: January 7, 2003
    Assignee: Toagosei Co., Ltd.
    Inventors: Eiichi Okazaki, Ichiro Igarashi, Kunihiko Mizutani
  • Patent number: 6143803
    Abstract: The present invention provides a curable composition for back-protecting material used in making shadow masks which gives a cured film excellent in all of etching resistance, alkali solubility or peelability, and pattern formability even when a second etching is carried out at high temperatures. That is, the present invention provides a curable composition for back-protecting material used at a second etching step in making shadow masks which comprises the following components (a), (b) and (c) and which gives a cured film having alkali solubility or alkali peelability:(a) a compound having one carboxyl group and one (meth)acryloyl group,(b) a tri(meth)acrylate of an alkylene oxide adduct of isocyanuric acid, and(c) (c1) a (meth)acrylate compound having two or more (meth)acryloyl groups, (c2) a chain transfer agent, or a combination of (c1) and (c2).
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: November 7, 2000
    Assignee: Toagosei Co., Ltd.
    Inventors: Ichiro Igarashi, Tetsuji Jitsumatsu
  • Patent number: 5674922
    Abstract: Active energy beam-curable compositions which comprise (1) at least one compound having one oxetane ring and one hydroxyl group in the molecule, (2) at least one compound having one or more oxirane rings in the molecule and (3) at least one compound which initiates cathionic polymerization by irradiation of active energy beams, are provided. The compositions can be rapidly cured by irradiation of active energy beams, such as ultraviolet rays and electron beams, to give excellent adhesion to basic materials.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: October 7, 1997
    Assignee: Toagosei Co., Ltd.
    Inventors: Ichiro Igarashi, Hiroshi Sasaki
  • Patent number: 5496589
    Abstract: A curing composition and a method for impregnating wood using the curing composition, which comprises a reaction product represented by formula (1) obtained by reacting an alkylene oxide adduct of a hydrocarbon polyol and (meth)acrylic acid: ##STR1## wherein R.sup.10 represents a residual group of a hydrocarbon polyol having from 3 to 15 carbon atoms and (c1+d1) hydroxyl groups; R.sup.11 represents an alkylene group having from 2 to 4 carbon atoms; R.sup.12 represents an alkylene group having from 2 to 4 carbon atoms; R.sup.13 represents a hydrogen atom or a methyl group; a1 represents a number of from 0 to 10; b1 represents a number of from 0 to 10; c1 represents a number of not less than 1.5; and d1 represents a number of not less than 0.5; provided that (a1+b1) is not less than 1.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: March 5, 1996
    Assignee: Toagosei Chemical Industry Co., Ltd.
    Inventors: Ichiro Igarashi, Hiroyuki Ota, Yoshio Mizoguchi
  • Patent number: 5348779
    Abstract: A refrigerant transporting hose having a laminar structure including an inner tube consisting of at least one layer, an outer tube disposed radially outwardly of and coaxially with the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes. The inner tube includes a resin layer formed of a resin composition which consists of a blend of modified polyolefin and polyamide resin, and 1-10% by weight of .epsilon.-caprolactam. A proportion by weight of the modified polyolefin to the polyamide resin is selected within a range between 40/60 and 10/90. The hose may have a sealing layer formed on the inner surface of the inner tube. The sealing layer consists of a chlorinated elastomer containing a dispersion of an acid receptive agent. Alternately, the sealing layer may be provided on the outer surface of a hose connector nipple.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: September 20, 1994
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Ichiro Igarashi
  • Patent number: 5336574
    Abstract: A curable composition comprising the following components (a), (b), (c) and (d) and/or (e):(a) a compound having one carboxyl group and one (meth)acryloyl group in the molecule,(b) a compound having two or more (meth)acryloyl groups in the molecule,(c) a levelling agent, and(d) a chain transfer agent and/or(e) a tertiary amine type photoinitiator; and a process for producing a shadow mask, comprising two etching steps, wherein the above curable composition is used as a secondary etching resist material.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: August 9, 1994
    Assignee: Toagosei Chemical Industry Co., Ltd.
    Inventors: Ichiro Igarashi, Hiroshi Sasaki, Tetsuji Jitsumatsu, Hiroyuki Ota, Masanobu Sato, Hirofumi Nishimuta
  • Patent number: 5264262
    Abstract: A refrigerant transporting hose having a laminar structure including an inner tube consisting of at least one layer, an outer tube disposed radially outwardly of and coaxially with the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes. The inner tube includes a resin layer formed of a resin composition which consists of a blend of modified polyolefin and polyamide resin, and 1-10% by weight of .epsilon.-caprolactam. A proportion by weight of the modified polyolefin to the polyamide resin is selected within a range between 40/60 and 10/90. The hose may have a sealing layer formed on the inner surface of the inner tube. The sealing layer consists of a chlorinated elastomer containing a dispersion of an acid receptive agent. Alternately, the sealing layer may be provided on the outer surface of a hose connector nipple.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: November 23, 1993
    Assignee: Tokai Rubber Industries, Inc.
    Inventor: Ichiro Igarashi
  • Patent number: 5223571
    Abstract: A refrigerant-transport hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, the reinforcing fiber layer and the inner and outer tubes providing an integral tubular body, and inner tube including a gas-impermeable resinous layer formed of a composition containing a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid having eight to sixteen carbon atoms.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: June 29, 1993
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ichiro Igarashi, Hiroaki Ito
  • Patent number: 5084314
    Abstract: A refrigerant transporting hose including a polyamide resin innermost layer, at least one intermediate rubber layer positioned radially outwardly of the innermost layer, a reinforcing fiber layer positioned radially outwardly of the intermediate rubber layer or layers, an outer tube which is positioned radially outwardly of the fiber layer and has at least one layer including an outermost layer, and at least one phenolic resin layer formed of a phenolic resin and having a total thickness within a range of 5-100 .mu.m. Each phenolic resin layer is provided at a corresponding one of interfaces between adjacent layers which are selected from the innermost layer, the intermediate layer or layers, the fiber layer and the layer or layers of the outer tube.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: January 28, 1992
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ichiro Igarashi, Hiroaki Ito
  • Patent number: 5016675
    Abstract: A refrigerant transporting hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, such that the reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body, the inner tube including a resinous layer formed of a composition containing as a major constituent thereof a blend of at least one aliphatic polyamide and at least one aromatic polyamide.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: May 21, 1991
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ichiro Igarashi, Hiroaki Ito
  • Patent number: 4998564
    Abstract: A refrigerant-transporting hose including an elastic tube through which a refrigerant is transported, the elastic tube including a tubular resinous layer formed of a resinous composition, the resinous composition containing as a major component thereof a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid compound having from eight to sixteen carbon atoms. The resinous composition may contain as a major component thereof a mixture of saponified ethylene-vinyl acetate copolymer and a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid compound having from eight to sixteen carbon atoms.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: March 12, 1991
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ichiro Igarashi, Hiroaki Ito
  • Patent number: 4942906
    Abstract: A rubber hose having an outer rubber tube and an inner rubber tube located radially inwardly of the outer rubber tube, the inner rubber tube including an inner layer and an outer layer located between the inner layer and the outer rubber tube, the inner layer being formed of a first polymer blend of acrylic rubber and fluorine-contained resin, the outer layer being formed of a second polymer blend which is different from the first polymer blend and which contains epichlorohydrin rubber. The rubber hose may further have a reinforcing fiber layer disposed between the outer rubber tube and the outer layer of the inner rubber tube such that the inner and outer rubber tubes and the fiber layer constitute an integral tubular body.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: July 24, 1990
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ichiro Igarashi, Kazuhiko Nishimura
  • Patent number: 4887647
    Abstract: In rubber hoses for conveying fuels, the inner tube rubber layer coming into contact with fuels generally comprises two sublayers, namely the inside fluororubber layer coming into direct contact with fuels and the outside layer of an NBR and the like. The fluororubber layer is undesirably subject to degradation due to amine type additives contained in fuels and is poor in adhesion to the outside layer. In accordance with the invention, the contents of vinylidene fluoride, one of the fluororubber constituents, is reduced to 10-50 mole percent and at the same time a monomer capable of causing crosslinking of the fluororubber in the presence of a peroxide is newly added as a component of the fluororubber composition in a specified amount. The results are prevention of the degradation due to amine type additives and improved adhesion to the outside layer.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: December 19, 1989
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ichiro Igarashi, Hiroaki Ito, Kazuhiko Nishimura