Patents by Inventor Toshiro Hiraoka
Toshiro Hiraoka 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: 8269205Abstract: According to one embodiment, an information recording and reproducing device includes a first layer, a second layer and a recording layer. The recording layer is provided between the first layer and the second layer and being capable of reversibly changing between a first state having a first resistance and a second state having a second resistance higher than the first resistance. The recording layer includes a first compound layer and a second compound layer. The first compound layer contains a first compound. The first compound includes a first cation element and a second cation element of a type different from the first cation element. The second compound layer contains a second compound. The second compound includes a transition element having a d-orbital partially filled with electron, and the second compound includes a void site capable of storing at least one of the first cation element and the second cation element.Type: GrantFiled: September 20, 2010Date of Patent: September 18, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Kohichi Kubo, Chikayoshi Kamata, Takayuki Tsukamoto, Shinya Aoki, Takahiro Hirai, Tsukasa Nakai, Toshiro Hiraoka
-
Publication number: 20120231213Abstract: A structure includes a substrate, a first layer formed on the substrate, and a second layer formed on the first layer. The first layer is comprised of a self-assembled monolayer and contains 4-(6-hydroxyhexyloxy)-4?-methoxybiphenyl. The second layer is obtained by micro-phase separation of a block copolymer containing a hydrophilic polymer comprised of polyethylene oxide and a hydrophobic polymer comprised of polymethacrylic acid containing azobenzene at the side chain. The second layer contains a cylinder phase with its long axis being oriented perpendicular to the substrate. The thickness T of the second layer is within a range of A?T?50 nm, where A is a phase separation period length satisfying 5 nm?A?50 nm.Type: ApplicationFiled: March 21, 2012Publication date: September 13, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Ryosuke Yamamoto, Hiroki Tanaka, Naoko Kihara, Toshiro Hiraoka
-
Patent number: 8237145Abstract: According to one embodiment, a nonvolatile memory device includes a stacked body including a first layer, a second layer and a recording layer. The recording layer is provided between the first layer and the second layer. The recording layer is capable of reversibly changing between a first state and a second state having a resistance higher than a resistance in the first state by a current supplied via the first layer and the second layer. The recording layer includes a first portion and a second portion provided in a plane of a major surface of the recording layer. The second portion has a nitrogen amount higher than a nitrogen amount in the first portion.Type: GrantFiled: August 18, 2010Date of Patent: August 7, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Chikayoshi Kamata, Takayuki Tsukamoto, Kohichi Kubo, Shinya Aoki, Takahiro Hirai, Toshiro Hiraoka
-
Patent number: 8207518Abstract: According to one embodiment, an information recording and reproducing device includes a first layer, a second layer and a recording layer. The recording layer is provided between the first layer and the second layer and being capable of reversibly changing between a first state having a first resistance and a second state having a second resistance higher than the first resistance by a current supplied via the first layer and the second layer. The recording layer includes a first compound layer and an insulating layer. The first compound layer contains a first compound. The first compound includes a first cation element and a second cation element of a type different from the first cation element. The insulating layer contains a third compound, and the third compound includes an element selected from group 1 to 4 elements and group 12 to 17 elements in the periodic table.Type: GrantFiled: September 20, 2010Date of Patent: June 26, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Kohichi Kubo, Chikayoshi Kamata, Takayuki Tsukamoto, Shinya Aoki, Takahiro Hirai, Tsukasa Nakai, Toshiro Hiraoka
-
Patent number: 8188455Abstract: An information recording/reproducing device includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having a spinel structure. The recording layer is AxMyX4 (0.1?x?2.2, 1.0?y?2.0), where A includes one selected from a group of Zn, Cd and Hg, M includes one selected from a group of Ti, Zr, Hf, V, Nb and Ta, and X includes O.Type: GrantFiled: December 11, 2009Date of Patent: May 29, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Takayuki Tsukamoto, Kohichi Kubo, Chikayoshi Kamata, Takahiro Hirai, Shinya Aoki, Toshiro Hiraoka
-
Publication number: 20120115250Abstract: A method of forming a concave-convex pattern according to an embodiment includes: forming a guide pattern on a base material, the guide pattern having a convex portion; forming a formative layer on the guide pattern, the formative layer including a stacked structure formed by stacking a first layer and a second layer, the first layer including at least one element selected from a first metal element and a metalloid element, the second layer including a second metal element different from the first metal element; selectively leaving the formative layer only at side faces of the convex portions by performing etching on the formative layer; removing the guide pattern; and forming the concave-convex pattern in the base material by performing etching on the base material, with the remaining formative layer being used as a mask.Type: ApplicationFiled: November 18, 2011Publication date: May 10, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Tomotaka Ariga, Yuichi Ohsawa, Junichi Ito, Yoshinari Kurosaki, Saori Kashiwada, Toshiro Hiraoka, Minoru Amano, Satoshi Yanagi
-
Publication number: 20120037594Abstract: A pattern forming material contains a block copolymer or graft copolymer and forms a structure having micro polymer phases, in which, with respect to at least two polymer chains among polymer chains constituting the block copolymer or graft copolymer, the ratio between N/(Nc?No) values of monomer units constituting respective polymer chains is 1.4 or more, where N represents total number of atoms in the monomer unit, Nc represents the number of carbon atoms in the monomer unit, No represents the number of oxygen atoms in the monomer unit.Type: ApplicationFiled: October 21, 2011Publication date: February 16, 2012Inventors: Koji ASAKAWA, Toshiro Hiraoka, Yoshihiro Akasaka, Yasuyuki Hotta
-
Publication number: 20120037595Abstract: A pattern forming material contains a block copolymer or graft copolymer and forms a structure having micro polymer phases, in which, with respect to at least two polymer chains among polymer chains constituting the block copolymer or graft copolymer, the ratio between N/(Nc-No) values of monomer units constituting respective polymer chains is 1.4 or more, where N represents total number of atoms in the monomer unit, Nc represents the number of carbon atoms in the monomer unit, No represents the number of oxygen atoms in the monomer unit.Type: ApplicationFiled: October 21, 2011Publication date: February 16, 2012Inventors: Koji ASAKAWA, Toshiro Hiraoka, Yoshihiro Akasaka, Yasuyuki Hotta
-
Publication number: 20120041121Abstract: A pattern forming material contains a block copolymer or graft copolymer and forms a structure having micro polymer phases, in which, with respect to at least two polymer chains among polymer chains constituting the block copolymer or graft copolymer, the ratio between N/(Nc?No) values of monomer units constituting respective polymer chains is 1.4 or more, where N represents total number of atoms in the monomer unit, Nc represents the number of carbon atoms in the monomer unit, No represents the number of oxygen atoms in the monomer unit.Type: ApplicationFiled: October 21, 2011Publication date: February 16, 2012Inventors: Koji ASAKAWA, Toshiro Hiraoka, Yoshihiro Akasaka, Yasuyuki Hotta
-
Patent number: 8043520Abstract: A pattern forming material contains a block copolymer or graft copolymer and forms a structure having micro polymer phases, in which, with respect to at least two polymer chains among polymer chains constituting the block copolymer or graft copolymer, the ratio between N/(Nc?No) values of monomer units constituting respective polymer chains is 1.4 or more, where N represents total number of atoms in the monomer unit, Nc represents the number of carbon atoms in the monomer unit, No represents the number of oxygen atoms in the monomer unit.Type: GrantFiled: January 16, 2009Date of Patent: October 25, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Koji Asakawa, Toshiro Hiraoka, Yoshihiro Akasaka, Yasuyuki Hotta
-
Patent number: 8018762Abstract: An information recording and reproducing apparatus, includes: a stacked structure including an electrode layer and a recording layer; a buffer layer added to the electrode layer; and a voltage application unit configured to apply a voltage to the recording layer, produce a phase change in the recording layer, and record information. The recording layer includes a first layer including a first compound having an ilmenite structure represented by AxMyX3 (0.1?x?1.1 and 0.Type: GrantFiled: December 11, 2009Date of Patent: September 13, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Kohichi Kubo, Chikayoshi Kamata, Takayuki Tsukamoto, Shinya Aoki, Takahiro Hirai, Toshiro Hiraoka
-
Patent number: 8014189Abstract: An information recording/reproducing device includes a recording layer, and a recording circuit which records data to the recording layer by generating a phase change in the recording layer. The recording layer includes a first chemical compound having a spinel structure. The recording layer is AxMyX4 (0.1?x?2.2, 1.0?y?2.0), where A includes one selected from a group of Zn, Cd and Hg, M includes one selected from a group of Cr, Mo, W, Mn and Re, and X includes O.Type: GrantFiled: December 11, 2009Date of Patent: September 6, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Takayuki Tsukamoto, Kohichi Kubo, Chikayoshi Kamata, Takahiro Hirai, Shinya Aoki, Toshiro Hiraoka
-
Patent number: 7995382Abstract: An information recording and reproducing apparatus, includes: a recording layer including a first layer including a first compound, the first compound being a conjugated compound including at least two types of cation elements, at least one selected from the cation elements being a transition element having a d orbit incompletely filled by electrons, a shortest distance between adjacent cation elements being not more than 0.32 nm; a voltage application unit that applies a voltage to the recording layer, produces a phase change in the recording layer, and records information; an electrode layer that applies a voltage to the recording layer; and an orientation control layer provided between the recording layer and the electrode layer to control an orientation of the recording layer.Type: GrantFiled: December 11, 2009Date of Patent: August 9, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Takayuki Tsukamoto, Kohichi Kubo, Chikayoshi Kamata, Takahiro Hirai, Shinya Aoki, Toshiro Hiraoka
-
Publication number: 20110031459Abstract: According to one embodiment, an information recording and reproducing device includes a first layer, a second layer and a recording layer. The recording layer is provided between the first layer and the second layer and being capable of reversibly changing between a first state having a first resistance and a second state having a second resistance higher than the first resistance. The recording layer includes a first compound layer and a second compound layer. The first compound layer contains a first compound. The first compound includes a first cation element and a second cation element of a type different from the first cation element. The second compound layer contains a second compound. The second compound includes a transition element having a d-orbital partially filled with electron, and the second compound includes a void site capable of storing at least one of the first cation element and the second cation element.Type: ApplicationFiled: September 20, 2010Publication date: February 10, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Kohichi KUBO, Chikayoshi Kamata, Takayuki Tsukamoto, Shinya Aoki, Takahiro Hirai, Tsukasa Nakai, Toshiro Hiraoka
-
Publication number: 20110024713Abstract: According to one embodiment, a nonvolatile memory device includes a stacked body including a first layer, a second layer and a recording layer. The recording layer is provided between the first layer and the second layer. The recording layer is capable of reversibly changing between a first state and a second state having a resistance higher than a resistance in the first state by a current supplied via the first layer and the second layer. The recording layer includes a first portion and a second portion provided in a plane of a major surface of the recording layer. The second portion has a nitrogen amount higher than a nitrogen amount in the first portion.Type: ApplicationFiled: August 18, 2010Publication date: February 3, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Chikayoshi KAMATA, Takayuki Tsukamoto, Kohichi Kubo, Shinya Aoki, Takahiro Hirai, Toshiro Hiraoka
-
Publication number: 20110006277Abstract: According to one embodiment, an information recording and reproducing device includes a first layer, a second layer and a recording layer. The recording layer is provided between the first layer and the second layer and being capable of reversibly changing between a first state having a first resistance and a second state having a second resistance higher than the first resistance by a current supplied via the first layer and the second layer. The recording layer includes a first compound layer and an insulating layer. The first compound layer contains a first compound. The first compound includes a first cation element and a second cation element of a type different from the first cation element. The insulating layer contains a third compound, and the third compound includes an element selected from group 1 to 4 elements and group 12 to 17 elements in the periodic table.Type: ApplicationFiled: September 20, 2010Publication date: January 13, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kohichi KUBO, Chikayoshi KAMATA, Takayuki TSUKAMOTO, Shinya AOKI, Takahiro HIRAI, Tsukasa NAKAI, Toshiro HIRAOKA
-
Publication number: 20100316831Abstract: According to one embodiment, an information recording and reproducing device includes a resistive layer directly or indirectly added to a recording layer and having electric resistivity larger than electric resistivity in the low-resistance state of the recording layer. A first compound contained in the recording layer comprises a composite compound includes two or more kinds of cationic elements, at least one of the two or more kinds of cationic elements is a transition element having a d orbit filled incompletely with electrons, a shortest distance between cationic elements adjacent to each other is 0.32 nm or less.Type: ApplicationFiled: August 20, 2010Publication date: December 16, 2010Inventors: Kohichi Kubo, Chikayoshi Kamata, Takayuki Tsukamoto, Shinya Aoki, Takahiro Hirai, Toshiro Hiraoka
-
Patent number: 7838877Abstract: There is proposed a nonvolatile information recording and reproducing device with low power consumption and high thermal stability. The information recording and reproducing apparatus according to an aspect of the present invention includes a recording layer and a unit for recording information by applying a voltage to the recording layer to generate a state change in the recording layer. The recording layer being configured to include at least a first compound having a hollandite structure.Type: GrantFiled: March 28, 2008Date of Patent: November 23, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Shinya Aoki, Kohichi Kubo, Takayuki Tsukamoto, Chikayoshi Kamata, Takahiro Hirai, Toshiro Hiraoka
-
Patent number: 7786665Abstract: An organic electroluminescent device is provided, which includes an emission portion comprising a first electrode and a second electrode and an organic layer sandwiched between the first and second electrodes, and a diffraction grating disposed neighboring on the emission portion, the diffraction grating having first regions and a second region, the first regions comprising a plurality of pair of recessed and projected portions, the plurality of pair of recessed and projected portions being periodically arranged and provided with a primitive translation vector of a direction, the second region comprising an aggregate of the first regions and located parallel with an emission surface of the organic electroluminescent device.Type: GrantFiled: December 29, 2005Date of Patent: August 31, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Tsutomu Nakanishi, Toshiro Hiraoka, Akira Fujimoto, Koji Asakawa, Satoshi Saito
-
Publication number: 20100213169Abstract: According to a first aspect of the invention, a method for manufacturing a concave-convex pattern includes the steps of heating a sheet-like member, compressively bonding the sheet-like member, removing the sheet-like member after the compressively bonding, and transferring a pattern shape of a reverse concave-convex pattern layer to a surface of the substrate. The sheet-like member has a concave-convex pattern block on at least one of surfaces thereof, and is given flowability thereto by heating. The reverse concave-convex pattern layer is formed on the one of the surfaces, and continues over two or more concaves of the concave-convex pattern block so that the reverse concave-convex pattern layer meshes at least partially with the concave-convex pattern block. At least the reverse concave-convex pattern layer is left on the substrate. Here, the one of the surfaces has the concave-convex pattern block.Type: ApplicationFiled: February 24, 2010Publication date: August 26, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Toshiro HIRAOKA