Patents by Inventor Riichi Nishimura
Riichi Nishimura 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).
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Patent number: 9321919Abstract: A method of manufacturing a nanocomposite having a continuous organic phase and oligomer-modified nanoplatelet mesomorphic structures, wherein the oligomer has a molecular weight of at least 100 g/mol.Type: GrantFiled: October 1, 2013Date of Patent: April 26, 2016Assignees: THE TEXAS A&M UNIVERSITY SYSTEM, KANEKA CORPORATIONInventors: Hung-Jue Sue, Minhao Wong, Peng Li, Riichi Nishimura
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Publication number: 20150037239Abstract: A method for dispersing nanotubes, comprising forming a nanocomposite solution with associated nanotubes and nanoplatelets, mixing a surfactant to the nanocomposite solution, separating the nanocomposite in solution, wherein the nanotubes remain suspended in the surfactant solution, and isolating the nanotubes in solution. In certain instances, the method further comprises functionalizing the nanotubes in solution.Type: ApplicationFiled: October 22, 2014Publication date: February 5, 2015Applicants: KANEKA NORTH AMERICA LLC, THE TEXAS A&M UNIVERSITY SYSTEMInventors: Hung-Jue SUE, Xi ZHANG, Riichi NISHIMURA
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Patent number: 8894963Abstract: A method for dispersing nanotubes, comprising forming a nanocomposite solution with associated nanotubes and nanoplatelets, mixing a surfactant to the nanocomposite solution, separating the nanocomposite in solution, wherein the nanotubes remain suspended in the surfactant solution, and isolating the nanotubes in solution. In certain instances, the method further comprises functionalizing the nanotubes in solution.Type: GrantFiled: December 28, 2010Date of Patent: November 25, 2014Assignees: The Texas A&M University System, Kaneka Texas CorporationInventors: Hung-Jue Sue, Xi Zhang, Riichi Nishimura
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Publication number: 20140193590Abstract: A method of manufacturing a nanocomposite having a continuous organic phase and oligomer-modified nanoplatelet mesomorphic structures, wherein the oligomer has a molecular weight of at least 100 g/mol.Type: ApplicationFiled: October 1, 2013Publication date: July 10, 2014Applicants: Kaneka Corporation, The Texas A&M University SystemInventors: Hung-Jue Sue, Minhao Wong, Peng Li, Riichi Nishimura
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Publication number: 20120095143Abstract: A method for dispersing nanotubes, comprising forming a nanocomposite solution with associated nanotubes and nanoplatelets, mixing a surfactant to the nanocomposite solution, separating the nanocomposite in solution, wherein the nanotubes remain suspended in the surfactant solution, and isolating the nanotubes in solution. In certain instances, the method further comprises functionalizing the nanotubes in solution.Type: ApplicationFiled: December 28, 2010Publication date: April 19, 2012Applicants: KANEKA TEXAS CORPORATION, THE TEXAS A&M UNIVERSITY SYSTEMInventors: Hung-Jue Sue, Xi Zhang, Riichi Nishimura
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Patent number: 7482382Abstract: The present invention is directed to novel sol-gel methods in which metal oxide precursor and an alcohol-based solution are mixed to form a reaction mixture that is then allowed to react to produce nanosized metal oxide particles. The methods of the present invention are more suitable for preparing nanosized metal oxide than are previously-described sol-gel methods. The present invention can provide for nanosized metal oxide particles more efficiently than the previously-described sol-gel methods by permitting higher concentrations of metal oxide precursor to be employed in the reaction mixture. The foregoing is provided by careful control of the pH conditions during synthesis and by ensuring that the pH is maintained at a value of about 7 or higher.Type: GrantFiled: May 19, 2004Date of Patent: January 27, 2009Assignees: The Texas A&M University System, Kaneka CorporationInventors: Yuntao Li, Hung-Jue Sue, Riichi Nishimura, Nobuo Miyatake
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Patent number: 7338706Abstract: A resin composition for capstock, comprising 100 to 30 parts by weight of an impact resistance modifier having a multilayer structure, and 0 to 70 parts by weight of a methyl methacrylate (co)polymer containing 50 to 100% by weight of methyl methacrylate and 50 to 0% by weight of a monomer which is copolymerizable therewith, wherein the total amount of the impact resistance modifier and the methyl methacrylate (co)polymer is 100 parts by weight, wherein the outer layer of said impact resistance modifier and/or said methyl methacrylate copolymer is copolymerized with 0.5 to 40% by weight of a reactive monomer based on the total amount of the impact resistance modifier and the methyl methacrylate (co)polymer as a polymer component, and wherein the homopolymer of said reactive monomer has an SP value of 9.8 (cal/cm3)/1/2 or more.Type: GrantFiled: April 23, 2002Date of Patent: March 4, 2008Assignees: Kaneka Corporation, Kaneka Texas CorporationInventors: Riichi Nishimura, Takahiko Sugaya
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Patent number: 7105602Abstract: The present invention provides a processing aid for thermoplastic resin having a weight average molecular weight of 10,000 to 300,000, which is obtained by polymerizing an alkyl (meth)acrylate, or an alkyl (meth)acrylate and another vinyl monomer copolymerizable therewith, in the presence of a mercaptan having an alkyl ester group with C4-20 alkyl group as a chain transfer agent, and/or an organic peroxide having a tertiary-butyl peroxy group as a polymerization initiator.Type: GrantFiled: April 14, 2000Date of Patent: September 12, 2006Assignee: Kaneka CorporationInventors: Takenobu Sunagawa, Riichi Nishimura, Toshiyuki Mori, Akira Takaki
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Publication number: 20050260122Abstract: The present invention is directed to novel sol-gel methods in which metal oxide precursor and an alcohol-based solution are mixed to form a reaction mixture that is then allowed to react to produce nanosized metal oxide particles. The methods of the present invention are more suitable for preparing nanosized metal oxide than are previously-described sol-gel methods. The present invention can provide for nanosized metal oxide particles more efficiently than the previously-described sol-gel methods by permitting higher concentrations of metal oxide precursor to be employed in the reaction mixture. The foregoing is provided by careful control of the pH conditions during synthesis and by ensuring that the pH is maintained at a value of about 7 or higher.Type: ApplicationFiled: May 19, 2004Publication date: November 24, 2005Applicants: Texas A&M University SystemInventors: Yuntao Li, Hung-Jue Sue, Riichi Nishimura, Nobuo Miyatake
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Patent number: 6844396Abstract: An acrylic resin composition with excellent impact resistance, weatherability, processability and low gloss is provided. The acrylic resin composition comprises, (A) 10 to 40 parts by weight of a high molecular weight acrylic (co)polymer which is a one-step or multi-step polymer containing 72 to 100% by weight of methyl methacrylate and 0 to 28% by weight of a copolymerizable monomer, the (co)polymer having a specific viscosity of at least 0.5 (solvent: toluene, concentration: 0.4%, temperature: 30° C.), wherein a polymer layer obtained in one of the steps contains at least 72% by weight of methyl methacrylate, has a specific viscosity of at least 0.5 and makes up at least 55% by weight of the total weight of the high molecular weight acrylic (co)polymer (A); (B) 0 to 80 parts by weight of an acrylic (co)polymer containing 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of a copolymerizable monomer, the acrylic (co)polymer having a specific viscosity of less than 0.Type: GrantFiled: August 28, 2002Date of Patent: January 18, 2005Assignees: Kaneka Corporation, Kaneka Texas CorporationInventors: Takahiko Sugaya, Riichi Nishimura, Kazuhisa Tajima
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Patent number: 6773821Abstract: An acrylic resin composition suitable for the preparation of capstock for siding panels and having excellent impact resistance, weatherability and processability and a low gloss, which comprises 30 to 100% by weight of an impact modifier having a multilayer structure and 0 to 70% by weight of a methyl methacrylate homopolymer or copolymer and whose MFI (melt flow index measured according to ASTM D-1238 at 230° C. and a load of 3.8 kg) is not more than 0.35 g/10 minutes.Type: GrantFiled: December 28, 2001Date of Patent: August 10, 2004Assignees: Kaneka Corporation, Kaneka Texas CorporationInventors: Kazuhisa Tajima, Riichi Nishimura, Takahiko Sugaya
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Publication number: 20040102578Abstract: A resin composition for capstock, comprising 100 to 30 parts by weight of an impact resistance modifier having a multilayer structure, and 0 to 70 parts by weight of a methyl methacrylate (co)polymer containing 50 to 100% by weight of methyl methacrylate and 50 to 0% by weight of a monomer which is copolymerizable therewith, wherein the total amount of the impact resistance modifier and the methyl methacrylate (co)polymer is 100 parts by weight, wherein the outer layer of said impact resistance modifier and/or said methyl methacrylate copolymer is copolymerized with 0.5 to 40% by weight of a reactive monomer based on the total amount of the impact resistance modifier and the methyl methacrylate (co)polymer as a polymer component, and wherein the homopolymer of said reactive polymer has an SP value of 9.8 (cal/cm3)½ of more.Type: ApplicationFiled: June 30, 2003Publication date: May 27, 2004Inventors: Riichi Nishimura, Takahiko Sugaya
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Publication number: 20040043235Abstract: An acrylic resin composition with excellent impact resistance, weatherability, processability and low gloss is provided. The acrylic resin composition comprises, (A) 10 to 40 parts by weight of a high molecular weight acrylic (co)polymer which is a one-step or multi-step polymer containing 72 to 100% by weight of methyl methacrylate and 0 to 28% by weight of a copolymerizable monomer, the (co)polymer having a specific viscosity of at least 0.5 (solvent: toluene, concentration: 0.4%, temperature: 30° C.), wherein a polymer layer obtained in one of the steps contains at least 72% by weight of methyl methacrylate, has a specific viscosity of at least 0.5 and makes up at least 55% by weight of the total weight of the high molecular weight acrylic (co)polymer (A); (B) 0 to 80 parts by weight of an acrylic (co)polymer containing 50 to 100% by weight of methyl methacrylate and 0 to 50% by weight of a copolymerizable monomer, the acrylic (co)polymer having a specific viscosity of less than 0.Type: ApplicationFiled: August 28, 2002Publication date: March 4, 2004Inventors: Takahiko Sugaya, Riichi Nishimura, Kazuhisa Tajima
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Patent number: 6555245Abstract: An acrylic resin composition suitable for the preparation of capstock for siding panels and having excellent impact resistance, weatherability and processability and a low gloss, which comprises 30 to 100% by weight of an impact modifier having a multilayer structure and 0 to 70% by weight of a methyl methacrylate homopolymer or copolymer and whose MFI (melt flow index measured according to ASTM D-1238 at 230° C. and a load of 3.8 kg) is no more than 0.2 g/10 minutes.Type: GrantFiled: December 20, 2000Date of Patent: April 29, 2003Assignees: Kaneka Corporation, Kaneka Texas CorporationInventors: Kazuhisa Tajima, Riichi Nishimura, Takahiko Sugaya
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Publication number: 20020177658Abstract: An acrylic resin composition suitable for the preparation of capstock for siding panels and having excellent impact resistance, weatherability and processability and a low gloss, which comprises 30 to 100% by weight of an impact modifier having a multilayer structure and 0 to 70% by weight of a methyl methacrylate homopolymer or copolymer and whose MFI (melt flow index measured according to ASTM D-1238 at 230° C. and a load of 3.8 kg) is no more than 0.2 g/10 minutes.Type: ApplicationFiled: December 20, 2000Publication date: November 28, 2002Applicant: KANEKA CORPORATION,Inventors: Kazuhisa Tajima, Riichi Nishimura, Takahiko Sugaya
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Publication number: 20020123568Abstract: An acrylic resin composition suitable for the preparation of capstock for siding panels and having excellent impact resistance, weatherability and processability and a low gloss, which comprises 30 to 100% by weight of an impact modifier having a multilayer structure and 0 to 70% by weight of a methyl methacrylate homopolymer or copolymer and whose MFI (melt flow index measured according to ASTM D-1238 at 230° C. and a load of 3.8 kg) is not more than 0.35 g/10 minutes.Type: ApplicationFiled: December 28, 2001Publication date: September 5, 2002Applicant: Kaneka CorporationInventors: Kazuhisa Tajima, Riichi Nishimura, Takahiko Sugaya
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Patent number: 6204327Abstract: A vinyl chloride resin composition containing a graft copolymer A having an average particle diameter of at least 0.15 &mgr;m, prepared by polymerizing 50 to 90% of a solid matter of a rubber latex having a glass transition temperature of at most O° C., the rubber latex being prepared by polymerizing 50 to 100% of butadiene and/or alkyl acrylate, 0 to 40% of an aromatic vinyl monomer, 0 to 10% of a vinyl monomer and 0 to 5% of a polyfunctional monomer, with 10 to 50% of a mixture comprising 10 to 100% of an alkyl methacrylate, 0 to 90% of an aromatic vinyl monomer, 0 to 25% of a vinyl cyamide monomer and 0 to 20% of a vinyl monomer; a graft copolymer B having an average particle diameter of 0.05 to 0.Type: GrantFiled: April 27, 1999Date of Patent: March 20, 2001Assignee: Kaneka CorporationInventors: Akira Takaki, Shinichi Yauchi, Koji Yui, Riichi Nishimura, Kentaro Takesada