Patents by Inventor Jin Arakida
Jin Arakida 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: 12257810Abstract: Specifically, the present invention provides a decorative sheet comprising a laminate, the laminate comprising at least a base material sheet and a first surface-protecting layer in sequence in the thickness direction; (1) the first surface-protecting layer comprising an ionizing radiation-curable resin containing two kinds of aliphatic urethane acrylates, i.e., resin A and resin B, wherein resin A is an aliphatic urethane acrylate with an isocyanurate skeleton, and resin B is an aliphatic urethane acrylate with an alicyclic skeleton without an isocyanurate skeleton, (2) the first surface-protecting layer having a nanoindentation hardness of 160 MPa or more and 240 MPa or less, and (3) the base material sheet comprising a polyolefin resin and having a nanoindentation hardness of 30 MPa or more and 80 MPa or less.Type: GrantFiled: March 11, 2021Date of Patent: March 25, 2025Assignee: Dai Nippon Printing Co., Ltd.Inventors: Masataka Wada, Toshinaru Kayahara, Jin Arakida, Risa Yoshinami
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Patent number: 12050227Abstract: The disclosure generally relates generally to lipid nanodiscs, in particular to lipid nanodiscs formed from acryloyl-based copolymers. A lipid nanodisc according to the disclosure includes a lipid bilayer having a first hydrophilic face and a second hydrophilic face opposing the first hydrophilic face, and a hydrophobic edge between the opposing hydrophilic faces, and an acryloyl-based copolymer encircling the hydrophobic edge of the lipid bilayer. The acryloyl-based copolymer includes a first monomer unit having a pendant hydrophobic group and a second monomer unit having a pendant hydrophilic group. Methods of making and characterizing the lipid nanodiscs are also disclosed.Type: GrantFiled: April 17, 2019Date of Patent: July 30, 2024Assignees: Nara Institute of Science and Technology, THE REGENTS OF THE UNIVERSITY OF MICHIGANInventors: Ayyalusamy Ramamoorthy, Thirupathi Ravula, Bikash Sahoo, Kazuma Yasuhara, Jin Arakida, Jun-Ichi Kikuchi
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Publication number: 20240165925Abstract: The invention provides a decorative sheet having a surface-protecting layer on its outermost surface, (1) the surface-protecting layer having a Martens hardness of 30 to 170 N/mm2, the Martens hardness being a value measured in a manner that when the surface-protecting layer contains fine particles, a diamond indenter is pressed into a position avoiding the fine particles to measure the Martens hardness of a cross-section, (2) the surface-protecting layer having irregularities, the irregularities having an embossed shape with a pebbly pattern, a wood-grain pattern, a wooden pattern, a marble grain pattern, or a leather pattern, and the irregularities having an average interval Sm of 180 ?m to 950 ?m, (3) the surface-protecting layer having a maximum height Rz of 10 to 45 ?m, and (4) the surface-protecting layer having a ratio of the area of a portion from the surface to a depth of 30 ?m of 40% or more.Type: ApplicationFiled: March 18, 2022Publication date: May 23, 2024Applicant: Dai Nippon Printing Co., Ltd.Inventors: Toshinaru Kayahara, Shinji Iwata, Tomomi Nakajima, Jin Arakida
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Publication number: 20230158783Abstract: Specifically, the present invention provides a decorative sheet comprising a laminate, the laminate comprising at least a base material sheet and a first surface-protecting layer in sequence in the thickness direction; (1) the first surface-protecting layer comprising an ionizing radiation-curable resin containing two kinds of aliphatic urethane acrylates, i.e., resin A and resin B, wherein resin A is an aliphatic urethane acrylate with an isocyanurate skeleton, and resin B is an aliphatic urethane acrylate with an alicyclic skeleton without an isocyanurate skeleton, (2) the first surface-protecting layer having a nanoindentation hardness of 160 MPa or more and 240 MPa or less, and (3) the base material sheet comprising a polyolefin resin and having a nanoindentation hardness of 30 MPa or more and 80 MPa or less.Type: ApplicationFiled: March 11, 2021Publication date: May 25, 2023Applicant: Dai Nippon Printing Co., Ltd.Inventors: Masataka Wada, Toshinaru Kayahara, Jin Arakida, Risa Yoshinami
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Patent number: 11458708Abstract: A decorative sheet having a surface-protecting layer, the surface-protecting layer having excellent contamination resistance, alkali resistance, etc., for a long period of time, while limiting the occurrence of breakage and cracks when an impact is applied thereto or during processing; and a decorative plate using the decorative sheet is provided. Specifically, a decorative sheet comprising a laminate, the laminate comprising at least a base material sheet and a first surface-protecting layer in sequence in the thickness direction; (1) the first surface-protecting layer comprising an ionizing radiation-curable resin containing two kinds of aliphatic urethane acrylates, i.e., resin A and resin B, wherein resin A is an aliphatic urethane acrylate with an isocyanurate skeleton, and resin B is an aliphatic urethane acrylate with an alicyclic skeleton without an isocyanurate skeleton, and (2) the first surface-protecting layer having a nanoindentation hardness of 160 MPa or more and 240 MPa or less.Type: GrantFiled: September 5, 2019Date of Patent: October 4, 2022Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yohei Shimizu, Jin Arakida, Masataka Wada
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Publication number: 20210276309Abstract: A decorative sheet having a surface-protecting layer, the surface-protecting layer having excellent contamination resistance, alkali resistance, etc., for a long period of time, while limiting the occurrence of breakage and cracks when an impact is applied thereto or during processing; and a decorative plate using the decorative sheet is provided. Specifically, a decorative sheet comprising a laminate, the laminate comprising at least a base material sheet and a first surface-protecting layer in sequence in the thickness direction; (1) the first surface-protecting layer comprising an ionizing radiation-curable resin containing two kinds of aliphatic urethane acrylates, i.e., resin A and resin B, wherein resin A is an aliphatic urethane acrylate with an isocyanurate skeleton, and resin B is an aliphatic urethane acrylate with an alicyclic skeleton without an isocyanurate skeleton, and (2) the first surface-protecting layer having a nanoindentation hardness of 160 MPa or more and 240 MPa or less.Type: ApplicationFiled: September 5, 2019Publication date: September 9, 2021Applicant: Dai Nippon Printing Co., Ltd.Inventors: Yohei Shimizu, Jin Arakida, Masataka Wada
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Publication number: 20190346464Abstract: The disclosure generally relates generally to lipid nanodiscs, in particular to lipid nanodiscs formed from acryloyl-based copolymers. A lipid nanodisc according to the disclosure includes a lipid bilayer having a first hydrophilic face and a second hydrophilic face opposing the first hydrophilic face, and a hydrophobic edge between the opposing hydrophilic faces, and an acryloyl-based copolymer encircling the hydrophobic edge of the lipid bilayer. The acryloyl-based copolymer includes a first monomer unit having a pendant hydrophobic group and a second monomer unit having a pendant hydrophilic group. Methods of making and characterizing the lipid nanodiscs are also disclosed.Type: ApplicationFiled: April 17, 2019Publication date: November 14, 2019Inventors: Ayyalusamy Ramamoorthy, Thirupathi Ravula, Bikash Sahoo, Kazuma Yasuhara, Jin Arakida, Jun-Ichi Kikuchi