Patents by Inventor Shigeji Konagaya
Shigeji Konagaya 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: 10804004Abstract: A conducting film of the present invention includes (A) graphene and/or graphene oxide, and/or derivatives thereof, and (B) a compound having a sulfonic acid group, and/or derivatives thereof, and has a volume resistivity of 1×104 ?·cm or less. A method for producing the conducting film of the present invention includes preparing a dispersion by dispersing a component including (A) graphene and/or graphene oxide, and/or derivatives thereof, and (B) a compound having a sulfonic acid group, and/or derivatives thereof in a dispersion medium, applying the dispersion on a substrate and drying it, and performing heat treatment at a temperature of 100° C. or more. Thereby, the present invention provides a conducting film that has high conductivity and can be applied to a wide range of composites including graphenes, and a method for producing the same.Type: GrantFiled: July 11, 2016Date of Patent: October 13, 2020Assignees: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, FUJI POLYMER INDUSTRIES CO., LTD.Inventors: Shigeji Konagaya, Toshio Saruyama, Hitoshi Shibuya
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Patent number: 9862840Abstract: A conducting composition of the present invention includes a cellulose nanofiber and a fine particle. The conducting composition includes (A) a cellulose nanofiber, and (B) at least one type of an inorganic powder selected from graphene, graphene oxide, and derivatives thereof. A method for producing the conducting composition includes preparing a dispersion by adding water or a mixed solvent of water and a hydrophilic solvent to (A) a cellulose nanofiber and (B) at least one type of an inorganic powder selected from graphene, graphene oxide, and derivatives thereof, and removing the water or the mixed solvent of water and a hydrophilic solvent from the dispersion. Accordingly, the present invention provides a conducting composition that utilizes a cellulose nanofiber and an inorganic powder having the conductivity at a nano-scale size, can improve the conductivity, and further can have properties such as anisotropy and transparency.Type: GrantFiled: September 14, 2015Date of Patent: January 9, 2018Assignees: National University Corporation Nagoya University, Fuji Polymer Industries Co., Ltd.Inventors: Shigeji Konagaya, Hitoshi Shibuya, Toshio Saruyama
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Publication number: 20170018327Abstract: A conducting film of the present invention includes (A) graphene and/or graphene oxide, and/or derivatives thereof, and (B) a compound having a sulfonic acid group, and/or derivatives thereof, and has a volume resistivity of 1×104 ?·cm or less. A method for producing the conducting film of the present invention includes preparing a dispersion by dispersing a component including (A) graphene and/or graphene oxide, and/or derivatives thereof, and (B) a compound having a sulfonic acid group, and/or derivatives thereof in a dispersion medium, applying the dispersion on a substrate and drying it, and performing heat treatment at a temperature of 100° C. or more. Thereby, the present invention provides a conducting film that has high conductivity and can be applied to a wide range of composites including graphenes, and a method for producing the same.Type: ApplicationFiled: July 11, 2016Publication date: January 19, 2017Inventors: Shigeji KONAGAYA, Toshio SARUYAMA, Hitoshi SHIBUYA
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Publication number: 20160340520Abstract: A conducting composition of the present invention includes a cellulose nanofiber and a fine particle. The conducting composition includes (A) a cellulose nanofiber, and (B) at least one type of an inorganic powder selected from graphene, graphene oxide, and derivatives thereof. A method for producing the conducting composition includes preparing a dispersion by adding water or a mixed solvent of water and a hydrophilic solvent to (A) a cellulose nanofiber and (B) at least one type of an inorganic powder selected from graphene, graphene oxide, and derivatives thereof, and removing the water or the mixed solvent of water and a hydrophilic solvent from the dispersion. Accordingly, the present invention provides a conducting composition that utilizes a cellulose nanofiber and an inorganic powder having the conductivity at a nano-scale size, can improve the conductivity, and further can have properties such as anisotropy and transparency.Type: ApplicationFiled: September 14, 2015Publication date: November 24, 2016Inventors: Shigeji KONAGAYA, Hitoshi SHIBUYA, Toshio SARUYAMA
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Publication number: 20160319176Abstract: A thermally conducting composition of the present invention includes (A) a cellulose nanofiber, and (B) at least one type of an inorganic powder selected from a metal oxide and a diamond having an average particle diameter of 50 nm or less. A method for producing the thermally conducting composition includes the steps of preparing a dispersion by adding water or a mixed solvent of water and a hydrophilic solvent to (A) a cellulose nanofiber and (B) at least one type of an inorganic powder selected from a metal oxide and a diamond having an average particle diameter of 50 nm or less; and removing the water or the mixed solvent of water and a hydrophilic solvent from the dispersion.Type: ApplicationFiled: September 14, 2015Publication date: November 3, 2016Inventors: Shigeji KONAGAYA, Hitoshi SHIBUYA, Toshio SARUYAMA
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Patent number: 6017610Abstract: A conductive laminate comprising an inorganic or organic substrate and a conductive layer formed on at least a part of a surface of said substrate, the conductive layer having a surface resistance at 25.degree. C., under 15% RH atmosphere of 10.sup.6 -10.sup.12 .OMEGA./.quadrature., a charge attenuation time of not more than 2 sec and a variation in surface resistance after heating at 250.degree. C. for one minute of not more than 5.0. The present invention provides an economical conductive laminate having antistatic performance even under low humidity, which performance being sufficient to overcome problems caused by static electricity, superior heat resistance and transparency, as well as superior characteristics of a structure such as a thermoplastic film.Type: GrantFiled: December 11, 1997Date of Patent: January 25, 2000Assignee: Toyo Boseki Kabushiki KaishaInventors: Kazuhiro Abe, Shigeji Konagaya, Chikao Morishige, Atsushi Hoshio
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Patent number: 6013275Abstract: Since an inorganic and/or organic antibacterial agent and a hydrophilic substance are used in combination in this invention to produce an antibacterial composition, the intrinsic antibacterial activity of the inorganic or organic antibacterial agent is markedly increased, so that the antibacterial agent used even in a low concentration shows a high antibacterial activity. High antibacterial moldings can be obtained at a relatively low cost by laminating the antibacterial composition of the invention on an inorganic or organic substrate.Type: GrantFiled: January 8, 1998Date of Patent: January 11, 2000Assignee: Toyo Boseki Kabushiki KaishaInventors: Shigeji Konagaya, Hideto Ohashi, Akito Hamano, Masahiro Seko, Masakazu Tanaka
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Patent number: 5932685Abstract: Heat-shrinkable polyester films having a heat shrinkability of 30% or more, preferably 40% or more, in the direction of major shrinkage after treatment in hot water at 80.degree. C. for 30 seconds, the ratio of heat shrinkability in the direction of major shrinkage after treatment in hot water at 80.degree. C. for 5 seconds to heat shrinkability in the direction of major shrinkage after treatment in hot water at 80.degree. C. for 30 seconds being 0.8 or less, preferably 0.7 or less. The heat-shrinkable polyester films are suitable for label applications because of their particular heat-shrinkable properties such that not only do they scarcely cause longitudinal sinking when shrunk but also they have very few wrinkles, shrinkage spots and strains remaining after shrinkage.Type: GrantFiled: August 26, 1997Date of Patent: August 3, 1999Assignee: Toyo Boseki Kabushiki KaishaInventors: Kuniharu Mori, Norimi Tabota, Koji Yamada, Shigeji Konagaya, Tsutomu Oko, Hiroaki Esaki, Seizo Takabayashi, Shinichiro Okumura, Tsutomu Isaka
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Patent number: 5783570Abstract: The present invention relates to an organic solvent-soluble mucopolysaccharide consisting of an ionic complex of at least one mucopolysaccharide (preferably heparin or heparin derivative) and a quaternary phosphonium, an antibacterial antithrombogenic composition comprising said organic solvent-soluble mucopolysaccharide and an organic polymer material, an antibacterial antithrombogenic composition comprising said organic solvent-soluble mucopolysaccharide and an antibacterial agent (preferably inorganic antibacterial agent such as silver zeolite), and to a medical material comprising said organic solvent-soluble mucopolysaccharide.Type: GrantFiled: December 23, 1996Date of Patent: July 21, 1998Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Yokota, Masakazu Tanaka, Masahiro Seko, Noriko Monden, Susumu Arimori, Shigeji Konagaya
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Patent number: 5679453Abstract: A polyester film containing organic particles comprising a matrix polymer and fine polymer particles is provided. The fine particles are interpenetrating network type cross-linked fine polymer particles, each particle containing, in its cross-linked polymer network, a hydrophilic polymer in an amount of 1 to 40% by weight which is not substantially bonded to the cross-linked polymer chemically. The cross-linked polymer is a vinyl type polymer or a siloxane type polymer comprising as its main components a polymerizable monomer and at least one cross-linking monomer contained in an amount of 5% by weight or more based on the total weight of the monomers. The interpenetrating network type cross-linked fine polymer particles have an average particle size in the range of 0.01 to 5 .mu.m and are contained in the film in an amount of 0.001 to 5.0% by weight.Type: GrantFiled: October 3, 1995Date of Patent: October 21, 1997Assignees: Toyo Boseki Kabushiki Kaisha, Nippon Magphane Co. Ltd.Inventors: Shigeji Konagaya, Yasuhiro Nishino, Hideto Ohashi
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Patent number: 5434000Abstract: A biaxially oriented polyester film of a polyester composed of an aromatic dicarboxylic acid as a major acid component and at least one glycol component, said polyester film containing 100-20000 ppm of a particulate compound oxide composed of two or more metals (selected from Al, B, Si, Ti, Zr, W, and Fe) and oxygen whose average primary particle diameter is 0.005-0.1 .mu.m. The compound oxide contains 0.1-5 wt % by weight of chlorine. The polyester film finds use as a base film for magnetic tape with improved scratch resistance.Type: GrantFiled: July 26, 1993Date of Patent: July 18, 1995Assignee: Toyo Boseki Kabushiki KaishaInventors: Shigeji Konagaya, Yasuhiro Nishino, Hideto Ohashi
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Patent number: 4695383Abstract: A permselective membrance suitable for obtaining fresh water by the desalination of sea water and salt water is provided herein, said permselective membrane being prepared by the reaction of an aromatic polycarboxylic acid component with a mixed diamine component comprising a diaminodiphenylsulfone compound of the formula (I), ##STR1## wherein R.sup.1 is hydrogen atom or a C.sub.1 -C.sub.12 hydrocarbon group, R.sup.2 s may be same or different, each representing a monovalent organic group, and n is an integer of 0 or 1 to 3, and an alicyclic diamine compound containing two secondary amino groups in the same or different ring(s).Type: GrantFiled: March 5, 1987Date of Patent: September 22, 1987Assignee: Toyo Boseki Kabushiki KaishaInventors: Shigeji Konagaya, Osamu Watanabe, Hideshi Kuzumoto, Masaya Tokai, Haruhiko Narusawa, Yasuo Kato