Patents by Inventor Ryotaro Tsuji
Ryotaro Tsuji 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: 10826056Abstract: An electrode sheet including a multi-walled carbon nanotube including plural graphene layers, each of which has a trioxotriangulene derivative of formula (1) dispersed therein, where X's are hydrogen, a halogen, or a monovalent organic group, and may be the same as or different from each other.Type: GrantFiled: January 12, 2018Date of Patent: November 3, 2020Assignees: KANEKA CORPORATION, NAGOYA ELECTRICAL EDUCATIONAL FOUNDATIONInventors: Ryotaro Tsuji, Megumi Fujisaki, Yasushi Morita
-
Publication number: 20180138499Abstract: An electrode sheet including a multi-walled carbon nanotube including plural graphene layers, each of which has a trioxotriangulene derivative of formula (1) dispersed therein, where X's are hydrogen, a halogen, or a monovalent organic group, and may be the same as or different from each other.Type: ApplicationFiled: January 12, 2018Publication date: May 17, 2018Applicants: KANEKA CORPORATION, NAGOYA ELECTRICAL EDUCATIONAL FOUNDATIONInventors: Ryotaro Tsuji, Megumi Fujisaki, Yasushi Morita
-
Publication number: 20160020345Abstract: The invention is to provide a method of manufacturing I-III-VI and I-II-IV-VI compound semiconductor thin-films, wherein a compound semiconductor crystal is efficiently grown to form a large grain diameter and the content of each of the elements contained in the compound semiconductor can be controlled. A substrate in which a I-III-VI or I-II-IV-VI compound semiconductor thin-film formed on the surface is heated such that a first temperature of the substrate is 100° C. to 700° C., then a non-oxidizing gas heated to a second temperature that is higher than the first temperature is flowed within a chamber so that the compound semiconductor thin-film formed on the surface of the substrate is thermally treated.Type: ApplicationFiled: March 7, 2014Publication date: January 21, 2016Applicants: OSAKA UNIVERSITY, KANEKA CORPORATIONInventors: Toshihiko Toyama, Takafumi Konishi, Ryotaro Tsuji
-
Patent number: 8933437Abstract: An organic semiconductor device according to the present invention includes a semiconductor layer 14 interposed between two electrodes 12 and 15, and the semiconductor layer 14 contains a trioxotriangulene (TOT) derivative, which is a neutral radical compound, as a semiconductor material. The semiconductor layer 14 acts as an n-type semiconductor and coacts with a p-type semiconductor layer 13 to exhibit a photoelectric conversion effect. The organic semiconductor device is characterized as including a semiconductor layer that has a narrow band gap, has light absorption performance in an infrared region, and is high in carrier mobility.Type: GrantFiled: November 25, 2009Date of Patent: January 13, 2015Assignee: Kaneka CorporationInventors: Yasushi Morita, Masaaki Yokoyama, Shozo Yanagida, Yoshihisa Tawada, Kenji Yamamoto, Ryotaro Tsuji
-
Publication number: 20120126206Abstract: An organic semiconductor device according to the present invention includes a semiconductor layer 14 interposed between two electrodes 12 and 15, and the semiconductor layer 14 contains a trioxotriangulene (TOT) derivative, which is a neutral radical compound, as a semiconductor material. The semiconductor layer 14 acts as an n-type semiconductor and coacts with a p-type semiconductor layer 13 to exhibit a photoelectric conversion effect. The organic semiconductor device is characterized as including a semiconductor layer that has a narrow band gap, has light absorption performance in an infrared region, and is high in carrier mobility.Type: ApplicationFiled: November 25, 2009Publication date: May 24, 2012Applicants: OSAKA UNIVERSITY, KANEKA CORPORATIONInventors: Yasushi Morita, Masaaki Yokoyama, Shozo Yanagida, Yoshihisa Tawada, Kenji Yamamoto, Ryotaro Tsuji
-
Publication number: 20090233090Abstract: The present invention relates to transparent nanocomposites comprising of metal oxide nanoparticles dispersed in polymer matrix. The nanoparticles have capping agents attached onto the nanoparticle surfaces and a precursor solution of capped nanoparticles and polymer is prepared and dried to obtain the nanocomposites. The nanocomposites exhibit UV absorption, low haze, and improved thermal stability. The present invention also relates to the methods associated with the preparation of capped nanoparticles, precursor solution and nanocomposites.Type: ApplicationFiled: October 3, 2006Publication date: September 17, 2009Inventors: Minhao Wong, Katsumi Yamaguchi, Ryotaro Tsuji
-
Patent number: 7399801Abstract: Provided is a curable composition which can easily regulate the properties of a cured object prepared therefrom, which can prepare a cured object that does not substantially discolor or soften a finishing agent or coating material applied to the surface thereof, and which has a high curing rate in the inner regions. The curable composition contains (A) a polymer having at least one mercapto group at the molecular ends, the polymer being derived from a thiocarbonylthio group-containing polymer (a2) prepared by polymerizing a monomer (a1) which contains an acrylic ester as a principal component and which contains 50% by weight or more of the acrylic ester and less than 50% by weight of a monomer copolymerizable with the acrylic ester in the presence of a thiocarbonylthio group-containing compound; (B) a compound having at least two mercapto groups per molecule; and (C) an oxidizing agent.Type: GrantFiled: October 3, 2002Date of Patent: July 15, 2008Assignee: Kaneka CorporationInventors: Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20070249747Abstract: The present invention provides a process for producing polymer-modified nanoparticles in which all kinds of nanoparticles can be economically and easily isolated and purified, and obtained in the form of nanoparticles strongly bonded to a polymer. Hence, the nanoparticles can be easily formed into a coating or a film. The process includes mixing nanoparticles having a particle diameter of 100 nm or less which are selected from the group consisting of metals, metal oxides, and compound semiconductors, with a vinyl polymer having terminal SH group in a liquid to modify the surfaces of the nanoparticles with the vinyl polymer and then isolating the nanoparticles modified with the vinyl polymer from the solution.Type: ApplicationFiled: June 21, 2005Publication date: October 25, 2007Applicant: Kaneka CorporationInventors: Ryotaro Tsuji, Kazuaki Matsumoto, Yoshiharu Yonemushi
-
Patent number: 7211625Abstract: Provided are a thermoplastic resin composition which is excellent in oil resistance, heat resistance, weatherability, impact resistance, transparency, and moldability, and which can be produced economically, an elastomer composition with low hardness and high tensile strength which is excellent in oil resistance and compression set, and a molded object produced by molding the thermoplastic resin composition or elastomer composition. The composition is produced by compounding a thermoplastic resin or an elastomer with a block copolymer having at least one methacrylic ester polymer block and at least one acrylic ester polymer block.Type: GrantFiled: March 20, 2002Date of Patent: May 1, 2007Assignee: Kaneka CorporationInventors: Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20060199900Abstract: The present invention provides a resin composition containing ultrafine particles exhibiting excellent properties absent from conventional materials. The resin composition is produced by uniformly dispersing, in a resin, metal or semiconductor ultrafine particles with the surfaces modified with a polymer. Specifically, a polymer having a mercapto group at one end is produced by radical polymerization of an unsaturated monomer in the presence of a specified thiocarbonylthio group-containing compound and then treating the resultant polymer with a treating agent, and the surfaces of the ultrafine particles are modified with the polymer having a mercapto group at one end to prepare the polymer-modified ultrafine particles. The polymer-modified ultrafine particles are mixed with a resin to achieve the resin composition containing the ultrafine particles uniformly dispersed in the resin.Type: ApplicationFiled: July 8, 2004Publication date: September 7, 2006Inventors: Kazuaki Matsumoto, Ryotaro Tsuji, Tatsushi Yoshida
-
Patent number: 7094833Abstract: Provided are a block copolymer including a polymer block containing acrylonitrile or methacrylonitrile as a principal constituent, which is excellent in heat resistance, weatherability, oil resistance, flame retardancy, and low-temperature resistance and which can be economically produced; and a thermoplastic resin composition and an elastomer composition each containing the block copolymer. The block copolymer is produced by reversible addition-fragmentation chain transfer polymerization in the presence of a thiocarbonylthio group-containing compound.Type: GrantFiled: July 1, 2002Date of Patent: August 22, 2006Inventors: Ryotaro Tsuji, Tomoki Hiiro
-
Patent number: 7081503Abstract: Objects of the present invention are to provide a process for easily producing an alkenyl-terminated vinyl polymer without using a metal compound requiring a complicated purification step, and to provide a curable composition containing the vinyl polymer. An alkenyl group is incorporated into an end of a vinyl polymer having a thiocarbonylthio structure at the end to produce an alkenyl-terminated vinyl polymer. Mixing this vinyl polymer with a compound having a hydrogen-silicon bond and a hydrosilylation catalyst gives the curable composition.Type: GrantFiled: August 22, 2005Date of Patent: July 25, 2006Assignee: Kaneka CorporationInventors: Ryotaro Tsuji, Tomoki Hiiro
-
Patent number: 7009004Abstract: Objects of the present invention are to provide a process for easily producing an alkenyl-terminated vinyl polymer without using a metal compound requiring a complicated purification step, and to provide a curable composition containing the vinyl polymer. An alkenyl group is incorporated into an end of a vinyl polymer having a thiocarbonylthio structure at the end to produce an alkenyl-terminated vinyl polymer. Mixing this vinyl polymer with a compound having a hydrogen-silicon bond and a hydrosilylation catalyst gives the curable composition.Type: GrantFiled: February 21, 2002Date of Patent: March 7, 2006Assignee: Kaneka CorporationInventors: Ryotaro Tsuji, Tomoki Hiiro
-
Patent number: 6992138Abstract: Provided is a polyurethane polymer which is excellent in oil resistance, weatherability, light resistance, heat resistance, hot water resistance, hydrolysis resistance, strength, chlorine resistance, and chemical resistance, and which can be produced simply and economically. The polyurethane polymer is produced by polymerizing at least two components: a vinyl polymer (A) having a mercapto group at each end of the molecular chain produced by a reversible addition-fragmentation chain transfer polymerization method, and an organic polyisocyanate (B). Also provided are polyurethane-based materials containing the polyurethane polymer, and polyurethane elastic fiber.Type: GrantFiled: May 14, 2002Date of Patent: January 31, 2006Assignee: Kaneka CorporationInventors: Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20060004171Abstract: Objects of the present invention are to provide a process for easily producing an alkenyl-terminated vinyl polymer without using a metal compound requiring a complicated purification step, and to provide a curable composition containing the vinyl polymer. An alkenyl group is incorporated into an end of a vinyl polymer having a thiocarbonylthio structure at the end to produce an alkenyl-terminated vinyl polymer. Mixing this vinyl polymer with a compound having a hydrogen-silicon bond and a hydrosilylation catalyst gives the curable composition.Type: ApplicationFiled: August 22, 2005Publication date: January 5, 2006Inventors: Ryotaro Tsuji, Tomoki Hiiro
-
Patent number: 6914110Abstract: A process for producing a crosslinkable silyl group-containing polymer which is excellent in oil resistance, heat resistance, weatherability, low staining properties, and compression set characteristics, includes the steps of radically polymerizing a vinyl monomer in the presence of a thiocarbonylthio group-containing compound with a specific structure, and introducing crosslinkable silyl groups. Also provided is a curable composition which contains the polymer and which is easy to handle.Type: GrantFiled: May 14, 2002Date of Patent: July 5, 2005Assignee: Kaneka CorporationInventors: Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20050004318Abstract: The present invention provides a curable composition that comprises a polymer (A) containing a cross-linkable silyl group and a condensation catalyst (B). The polymer (A) containing a cross-linkable silyl group is obtained by a process comprising the steps of conducting a radical polymerizable monomer in the presence of a thiocarbonylthio compound. For example, the polymer (A) is obtained by (i) initiating a reversible addition-fragmentation chain transfer polymerization of a radical polymerizable monomer in the presence of a thiocarbonylthio compound, and (ii) adding an unsaturated compound containing a cross-linkable silyl group for copolymerization when a consumed amount of the radical polymerizable monomer by the polymerization has reached a level of 80% or more.Type: ApplicationFiled: November 13, 2002Publication date: January 6, 2005Inventors: Nobuaki Ohshiro, Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20040249026Abstract: Provided is a curable composition which can easily regulate the properties of a cured object prepared therefrom, which can prepare a cured object that does not substantially discolor or soften a finishing agent or coating material applied to the surface thereof, and which has a high curing rate in the inner regions. The curable composition contains (A) a polymer having at least one mercapto group at the molecular ends, the polymer being derived from a thiocarbonylthio group-containing polymer (a2) prepared by polymerizing a monomer (a1) which contains an acrylic ester as a principal component and which contains 50% by weight or more of the acrylic ester and less than 50% by weight of a monomer copolymerizable with the acrylic ester in the presence of a thiocarbonylthio group-containing compound; (B) a compound having at least two mercapto groups per molecule; and (C) an oxidizing agent.Type: ApplicationFiled: April 6, 2004Publication date: December 9, 2004Inventors: Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20040236020Abstract: Provided are a block copolymer including a polymer block containing acrylonitrile or methacrylonitrile as a principal constituent, which is excellent in heat resistance, weatherability, oil resistance, flame retardancy, and low-temperature resistance and which can be economically produced; and a thermoplastic resin composition and an elastomer composition each containing the block copolymer. The block copolymer is produced by reversible addition-fragmentation chain transfer polymerization in the presence of a thiocarbonylthio group-containing compound.Type: ApplicationFiled: January 7, 2004Publication date: November 25, 2004Inventors: Ryotaro Tsuji, Tomoki Hiiro
-
Publication number: 20040220364Abstract: A process for producing a crosslinkable silyl group-containing polymer which is excellent in oil resistance, heat resistance, weatherability, low staining properties, and compression set characteristics, includes the steps of radically polymerizing a vinyl monomer in the presence of a thiocarbonylthio group-containing compound with a specific structure, and introducing crosslinkable silyl groups. Also provided is a curable composition which contains the polymer and which is easy to handle.Type: ApplicationFiled: November 20, 2003Publication date: November 4, 2004Inventors: Ryotaro Tsuji, Tomoki Hiiro