Patents by Inventor Yukihiro Okubo

Yukihiro Okubo 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: 20030181557
    Abstract: The present invention provides an aqueous emulsion dispersion widely applicable and capable of providing excellent properties even when used by mixing into other conventional emulsions used for many utilities. The aqueous emulsion dispersion has improved stability over time and mechanical stability, and when used as an asphalt modifier, the aqueous emulsion dispersion can be easily mixed and dissolved into hot asphalt or asphalt emulsion and can improve flow resistance, toughness and low temperature flexibility of asphalt without losing workability. The present invention also relates to a process for preparing the aqueous emulsion dispersion.
    Type: Application
    Filed: February 26, 2003
    Publication date: September 25, 2003
    Applicant: JSR CORPORATION
    Inventors: Ginpei Suzuki, Yukihiro Okubo, Etuo Ito, Masayo Kuze
  • Patent number: 6518354
    Abstract: There is provided a dispersing emulsion excellent in storage stability and mechanical stability, particularly an asphalt modifier of an water based dispersing emulsion, which can be mixed with a hot asphalt or an asphalt emulsion, and can improve rutting resistance, toughness, and flexibility at a low temperature without losing workability. There is provided a dispersing emulsion of a thermoplastic elastomer, which is emulsified and dispersed in the presence of at least one nonionic emulsifier selected from the group consisting of a styrenated phenol poly(alkylene oxide), a poly(alkylene polyamine) poly(alkylene oxide), polyalcohol fatty acid esters, polyalcohol fatty acid esters poly(alkylene oxide), and a benzylated phenol poly(alkylene oxide).
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: February 11, 2003
    Assignees: JSR Corporation, Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Ginpei Suzuki, Yukihiro Okubo, Toshiyuki Nishitani, Masayo Kuze
  • Patent number: 4912152
    Abstract: A one-pack type thermosetting composition comprising (A) at least one polyisocyanate compound having dispersed therein (B) at least one compound selected from the group consisting of (1) a solid polyfunctional compound having at least one functional group selected from the group consisting of hydrazino, primary amido and sulfamoyl groups, (2) a solid compound having at least one amidino group and (3) a solid compound having a heterocyclic ring and a plurality of active hydrogen atoms, or a one-pack type thermosetting composition comprising (A') a mixture consisting of (a) at least one polyisocyanate compound and (b) at least one high boiling polar compound, having dispersed therein (B') a solid polyfunctional compound having at least one active hydrogen atom. Said one-pack type thermosetting composition is storable and suitable for use in adhesives, sealing materials, coatings and shaped articles of resin.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: March 27, 1990
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Kazumi Nejigaki, Kenichi Kurosawa, Isao Nishiwaki, Yukihiro Okubo
  • Patent number: 4546166
    Abstract: This polyurethane sealant composition for construction materials or automotive parts cures quickly without foaming and comprises an isocyanate-terminated prepolymer and a curing agent consisting of a polyhydroxy compound, a polyamine compound, a monoamine compound, and a curing agent.
    Type: Grant
    Filed: October 22, 1984
    Date of Patent: October 8, 1985
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Masahiro Niinomi, Yukihiro Okubo, Yoshinori Igarashi, Masashi Yoshinari