Patents by Inventor Koji Morihara
Koji Morihara 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: 11752501Abstract: A silicone member used for a micro device and a micro device which achieve both electrification suppression and light transmittance are provided. The silicone member is used as a micro device and has a holding part for holding samples, or defines the holding part through the combination with a counterpart member. The silicone member includes a silicone material which has silicone and an ionic conductive agent, and the content of the ionic conductive agent is 0.01 part by mass or higher and 1 part by mass or lower with respect to 100 parts by mass of the silicone. The micro device includes the silicone member.Type: GrantFiled: September 15, 2020Date of Patent: September 12, 2023Assignee: Sumitomo Riko Company LimitedInventors: Koji Morihara, Katsumi Okashita, Yasunori Nimura, Kazumi Yoshida
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Publication number: 20230207839Abstract: A member for a fuel cell in which a lip 4b is directly fixed to the surface of a separator 5. In the member for a fuel cell, the lip 4b is a cross-linked body of a radically curable composition containing components (A) to (E) below at a specific ratio, and the glass transition temperature (Tg) of the cross-linked body is ?30° C. or less. (A) (Meth)acrylic polymer having a (meth)acryloyl group at a molecular chain end. (B) Monofunctional (meth)acrylic monomer having a glass transition temperature (Tg) of 0° C. or more and having a polycyclic structure. (C) Monofunctional (meth)acrylic monomer except for component (B). (D) Polyfunctional (meth)acrylic monomer. (E) Radical polymerization initiator.Type: ApplicationFiled: March 6, 2023Publication date: June 29, 2023Applicant: Sumitomo Riko Company LimitedInventors: Yasunori Nimura, Shota Taniguchi, Koji Morihara
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Publication number: 20210094031Abstract: A silicone member used for a micro device and a micro device which achieve both electrification suppression and light transmittance are provided. The silicone member is used as a micro device and has a holding part for holding samples, or defines the holding part through the combination with a counterpart member. The silicone member includes a silicone material which has silicone and an ionic conductive agent, and the content of the ionic conductive agent is 0.01 part by mass or higher and 1 part by mass or lower with respect to 100 parts by mass of the silicone. The micro device includes the silicone member.Type: ApplicationFiled: September 15, 2020Publication date: April 1, 2021Applicant: Sumitomo Riko Company LimitedInventors: Koji MORIHARA, Katsumi OKASHITA, Yasunori NIMURA, Kazumi YOSHIDA
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Publication number: 20200241416Abstract: Provided is a flexographic printing plate precursor which can suppress chipping of relief images while maintaining printing properties. The flexographic printing plate precursor (10) includes a photosensitive layer (16) which includes (A) a water-dispersed latex, (B) a millable rubber, (C) a surfactant, (D) photopolymerizable compounds, and (E) a photopolymerization initiator, the (D) including the following (d1) to (d3). (d1) is a photopolymerizable compound of a chain structure having no cyclic structure, (d2) is a monofunctional photopolymerizable compound having a cyclic structure, and (d3) is a bifunctional photopolymerizable compound having a cyclic structure.Type: ApplicationFiled: April 10, 2020Publication date: July 30, 2020Applicant: Sumitomo Riko Company LimitedInventors: Koji MORIHARA, Hideyuki HASHIMOTO, Daisuke INOUE, Koki MATSUOKA, Yasuyuki HAYASAKI
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Publication number: 20160378012Abstract: There is provided a charging member (1) capable of improving adhesion of an elastic layer (3) with a surface layer (4), which is used for an electrophotographic image forming device. The charging member (1) has a shaft body (2) having conductivity, the elastic layer (3) having conductivity which is formed along the outer circumference of the shaft body (2), and the surface layer (4) formed along the outer circumference of the elastic layer (3). The elastic layer (3) contains a rubber and a calcium carbonate having a spindle shape. The surface layer (4) is composed of a cured material of a composition containing a matrix polymer, a polyisocyanate having two or more isocyanate groups in a molecule, and a porous particle. The calcium carbonate in the elastic layer (3) exists more at a side closer to the surface layer (4) than at a side closer to the shaft body (2).Type: ApplicationFiled: September 13, 2016Publication date: December 29, 2016Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Masanori Satoh, Satoshi Tatsumi, Yukio Oyama, Masanori Ishida, Koji Morihara
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Patent number: 9095870Abstract: The object of the present invention is to provide a conductive roll having high resistance to permanent set and high resistance to adhesion. The conductive roll 1 has a rubber elastic portion formed of a rubber material including a carbon-carbon double bond and exhibiting electric conductivity. The surface of the rubber elastic portion is exposed as the surface of the roll. An organic group including one or more groups selected from silicone groups and fluorine-containing groups is bonded through an isocyanuric acid skeleton to the surface of the rubber elastic portion. The organic group may be a group derived from an organic compound including one or more groups selected from silicone groups and fluorine-containing groups and having a carbon-carbon double bond.Type: GrantFiled: August 30, 2012Date of Patent: August 4, 2015Assignee: SUMITOMO RIKO COMPANY LIMITEDInventors: Shinkichi Kashihara, Satoshi Tatsumi, Minobu Iinuma, Yosuke Hayashi, Koji Morihara
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Publication number: 20130053229Abstract: The object of the present invention is to provide a conductive roll having high resistance to permanent set and high resistance to adhesion. The conductive roll 1 has a rubber elastic portion formed of a rubber material including a carbon-carbon double bond and exhibiting electric conductivity. The surface of the rubber elastic portion is exposed as the surface of the roll. An organic group including one or more groups selected from silicone groups and fluorine-containing groups is bonded through an isocyanuric acid skeleton to the surface of the rubber elastic portion. The organic group may be a group derived from an organic compound including one or more groups selected from silicone groups and fluorine-containing groups and having a carbon-carbon double bond.Type: ApplicationFiled: August 30, 2012Publication date: February 28, 2013Applicant: TOKAI RUBBER INDUSTRIES, LTD.Inventors: Shinkichi Kashihara, Satoshi Tatsumi, Minobu Iinuma, Yosuke Hayashi, Koji Morihara