Patents by Inventor Shunji Kojima

Shunji Kojima 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: 20240071354
    Abstract: A sound absorbing device for a moving body includes a resonance tube, a variable elastic membrane, and an adjustment part. The resonance tube has a pipeline, one end portion of which is disposed to face an indoor space. The variable elastic membrane has one surface disposed so as to face an indoor space and the other surface disposed so as to face an internal space of other end portion of the resonance tube. The adjustment part adjusts an elastic modulus of the variable elastic membrane.
    Type: Application
    Filed: August 18, 2023
    Publication date: February 29, 2024
    Inventors: Shunji Suzuki, Hayato Kojima, Yuma Tsuboi
  • Patent number: 5763507
    Abstract: An aqueous paint which exhibits improved dispersion property in the water and dispersion stability, has a low viscosity enabling the painting operation to be efficiently carried out, and cures at low temperatures within short periods of time to form a coating which after cured exhibits high degree of workability, high corrosion resistance, and elutes out little into the content. The aqueous paint comprises an epoxy acrylate resin prepared by modifying, with a (meth)acrylic monomer, a copolymerized epoxy resin having a number average molecular weight of 8,000 to 15,000 and containing, as phenolic components, a bisphenol-A component and a bisphenol-F component at a molar ratio of from 5:5 to 8:2, and a curing agent of a thermosetting resin having a methylol group.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: June 9, 1998
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Toshinori Moriga, Shunji Kojima, Seishichi Kobayashi
  • Patent number: 5677053
    Abstract: An adhesion structure in which the gel of an acrylic plastisol is strongly adhered to the metallic base material, featuring excellent resistance against corrosion and exhibiting small whitening tendency even under severe conditions for treatment with hot water such as retort processing, and a method of producing the same structure. The acrylic plastisol is applied onto the metallic base material or onto the metallic base material having an organic coating provided with a layer of a thermosetting resin which contains a bisphenol-type epoxy resin and a phenolic resin at a weight ratio of from 99:1 to 85:15, and is gelled by heating and is, at the same time, adhered to the base material via the thermosetting resin layer. The acrylic plastisol is gelled and is strongly adhered onto the thermosetting resin layer within short periods of time. The obtained adhesion structure exhibits excellent resistance against peeling, corrosion and retorting.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: October 14, 1997
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Toshinori Moriga, Shunji Kojima, Seishichi Kobayashi, Yusuke Obu, Shinji Odajima
  • Patent number: 5441994
    Abstract: An acrylic resin plastisol composition that forms coatings or molded articles having excellent anticreep property. The plastisol composition maintains excellent fluidity required for the coating and molding even after preserved for extended periods of time and further exhibits excellent gelation property upon heating, enabling the obtained coating or the molded article to exhibit excellent resistance against the relaxation of stress. The plastisol composition comprises a dispersing medium composed chiefly of a plasticizer and acrylic resin grains dispersed in said dispersing medium, wherein said acrylic resin grains have a functional group selected from the group consisting of carboxyl group, hydroxyl group, epoxy group, methylol group and etherified methylol group, and said dispersing medium contains a crosslinking agent that has reactivity to said functional group in a state of being at least partly solubilized in said dispersing medium.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: August 15, 1995
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Toshinori Moriga, Shunji Kojima, Seishichi Kobayashi
  • Patent number: 5110847
    Abstract: An o/w water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amines. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying. Furthermore, a process for the continuous production of an emulsion type water paint comprising a carboxyl group-containing acrylic resin component, an epoxy resin component and a curing agent resin component for the epoxy resin is disclosed.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: May 5, 1992
    Assignee: Toyo Seikan Kaisha Ltd.
    Inventors: Shunji Kojima, Yoshiki Watanabe, Hiroaki Goto, Toshinori Moriga
  • Patent number: 5087645
    Abstract: An O/W water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amine. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: February 11, 1992
    Assignee: Toyo Seikan Kaisha Ltd.
    Inventors: Shunji Kojima, Yoshiki Watanabe, Hiroaki Goto, Toshinori Moriga
  • Patent number: 5068266
    Abstract: An o/w water paint having excellent dispersibility and stability is prepared according to a phase conversion process comprising adding ammonia or an amine and water to a solution of an epoxy resin, a hardener resin, and an acrylic resin in an organic solvent or to a molten mixture of these resins to neutralize the acrylic resin. In view of adhesion of a coat to metal and workability, branched alkylamines or heterocyclic amines are suitable as the neutralizing amines. In applying this paint, steam optionally containing fine water droplets is preferably applied to a wet coat prior to drying. Furthermore, a process for the continuous production of an emulsion type water paint comprising a carboxyl group-containing acrylic resin component, an epoxy resin component and a curing agent resin component for the epoxy resin is disclosed.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: November 26, 1991
    Assignee: Toyo Seikan Kaisha Ltd.
    Inventors: Shunji Kojima, Yoshiki Watanabe, Hiroaki Goto, Toshinori Moriga
  • Patent number: 4477501
    Abstract: Disclosed is a coated welded can having a metal-exposed face inclusive of a seam covered with a coating, wherein the coating comprises at least one organic resin coating layer and at least one metal film, and at least the portion of the organic resin coating that adheres to the metal-exposed face is comprised of a copolymer of ethylene with a carbonyl group-containing, ethylenically unsaturated monomer or a blend containing this copolymer.In this coated welded can, the adhesion of the coating, the corrosion resistance of the seam and the appearance characteristics of the seam are highly improved. Furthermore, the coating of this welded can is not damaged by such processing as flanging, beading or double-seaming or when the welded can is subjected to the retort sterilization.
    Type: Grant
    Filed: November 19, 1982
    Date of Patent: October 16, 1984
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Shunji Kojima, Tadahiko Katsura, Hiroshi Ueno, Kazuo Taira, Tsuneo Imatani
  • Patent number: 4339483
    Abstract: In a welded metallic can wherein the can body is covered at its joint portion with a film of an organic polymeric resin, the improvement wherein said film is characterized by being a multilayered film having at least one layer of a film of an organic polymeric resin and at least one layer selected from the group consisting of metallic foils, evaporation coated metallic layers and electroplated metallic layers, and further characterized in that the layer disposed adjacent the welded can is the film of an organic polymeric resin.
    Type: Grant
    Filed: July 1, 1980
    Date of Patent: July 13, 1982
    Assignee: Toyo Seikan Kaisha Limited
    Inventors: Hiroshi Ueno, Shunji Kojima, Kazuo Taira, Tadahiko Katsura, Makoto Horiguchi, Susumu Takahashi
  • Patent number: 4189418
    Abstract: A can end sealing rubber composition(A) consisting essentially of a styrene-butadiene rubbery copolymer, a tackifier and a filler, and(B) having (1) a creep resistance coefficient K defined by the following equation of at least 0.1 but not exceeding 0.6,K=log J.sub.90.sup.C (10)-log J.sub.90.sup.C (1)wherein J.sub.90.sup.C (10) is the creep compliance measured 10 minutes after exerting a load when a fabricated article of the composition as a specimen is compressed in water at 90.degree. C. by a parallel plate plastometer, and J.sub.90.sup.C (1) is the creep compliance measured 1 minute after exerting a load when the specimen is compressed in water at 90.degree. C. by a parallel plate plastomer,and (2) a creep compliance J.sub.25.sup.C (1) of at least 3.times.10.sup.-9 cm.sup.2 /dyne but not exceeding 1.times.10.sup.-6 cm.sup.2 /dyne, the creep compliance being measured 1 minute after exerting a load when the specimen is compressed in water at 25.degree. C. by a parallel plate plastometer.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: February 19, 1980
    Assignee: Toyo Seikan Kaisha Limited
    Inventors: Hiroshi Ueno, Shunji Kojima, Masanori Aizawa, Akira Kishimoto