Patents by Inventor Kyoko YOSHIOKA
Kyoko YOSHIOKA 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: 9988672Abstract: To provide a method for selectively detecting the methylation of particular cytosines in genomic DNA using a methylcytosine detection method using an anti-methylcytosine antibody to improve quantitativity and reliability. A method for detecting the methylated state of cytosine at a specific position contained in a nucleic acid, includes fragmenting the nucleic acid using a restriction enzyme; forming a double-stranded nucleic acid between the fragmented nucleic acid and a single-stranded nucleic acid having a base sequence capable of hybridizing with the fragmented nucleic acid but incapable of resulting in the formation of a base pair with cytosine at a specific position in the fragmented nucleic acid and a solid phase-binding site; binding the double-stranded nucleic acid on a solid phase using the solid phase-binding site; and measuring the amount of an antibody binding to the double-stranded nucleic acid on the solid phase.Type: GrantFiled: March 13, 2014Date of Patent: June 5, 2018Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Ryoji Kurita, Hiroyuki Yanagisawa, Kyoko Yoshioka, Osamu Niwa
-
Publication number: 20160138080Abstract: To provide a method for selectively detecting the methylation of particular cytosines in genomic DNA using a methylcytosine detection method using an anti-methylcytosine antibody to improve quantitativity and reliability. A method for detecting the methylated state of cytosine at a specific position contained in a nucleic acid, includes fragmenting the nucleic acid using a restriction enzyme; forming a double-stranded nucleic acid between the fragmented nucleic acid and a single-stranded nucleic acid having a base sequence capable of hybridizing with the fragmented nucleic acid but incapable of resulting in the formation of a base pair with cytosine at a specific position in the fragmented nucleic acid and a solid phase-binding site; binding the double-stranded nucleic acid on a solid phase using the solid phase-binding site; and measuring the amount of an antibody binding to the double-stranded nucleic acid on the solid phase.Type: ApplicationFiled: March 13, 2014Publication date: May 19, 2016Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Ryoji Kurita, Hiroyuki Yanagisawa, Kyoko Yoshioka, Osamu Niwa
-
Patent number: 9299852Abstract: A miniaturized semiconductor device in which an increase in power consumption is suppressed and a method for manufacturing the semiconductor device are provided. A highly reliable semiconductor device having stable electric characteristics and a method for manufacturing the semiconductor device are provided. An oxide semiconductor film is irradiated with ions accelerated by an electric field in order to reduce the average surface roughness of a surface of the oxide semiconductor film. Consequently, an increase in the leakage current and power consumption of a transistor can be suppressed. Moreover, by performing heat treatment so that the oxide semiconductor film includes a crystal having a c-axis substantially perpendicular to the surface of the oxide semiconductor film, a change in electric characteristics of the oxide semiconductor film due to irradiation with visible light or ultraviolet light can be suppressed.Type: GrantFiled: May 30, 2012Date of Patent: March 29, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kyoko Yoshioka, Junichi Koezuka, Shinji Ohno, Yuichi Sato, Shinya Sasagawa
-
Publication number: 20140186998Abstract: A highly reliable semiconductor device which is formed using an oxide semiconductor and has stable electric characteristics is provided. A semiconductor device which includes an amorphous oxide semiconductor layer including a region containing oxygen in a proportion higher than that in the stoichiometric composition, and an aluminum oxide film provided over the amorphous oxide semiconductor layer is provided. The amorphous oxide semiconductor layer is formed as follows: oxygen implantation treatment is performed on a crystalline or amorphous oxide semiconductor layer which has been subjected to dehydration or dehydrogenation treatment, and then thermal treatment is performed on the oxide semiconductor layer provided with an aluminum oxide film at a temperature lower than or equal to 450° C.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Junichi KOEZUKA, Naoto YAMADE, Kyoko YOSHIOKA, Yuhei SATO, Mari TERASHIMA
-
Patent number: 8709922Abstract: A highly reliable semiconductor device which is formed using an oxide semiconductor and has stable electric characteristics is provided. A semiconductor device which includes an amorphous oxide semiconductor layer including a region containing oxygen in a proportion higher than that in the stoichiometric composition, and an aluminum oxide film provided over the amorphous oxide semiconductor layer is provided. The amorphous oxide semiconductor layer is formed as follows: oxygen implantation treatment is performed on a crystalline or amorphous oxide semiconductor layer which has been subjected to dehydration or dehydrogenation treatment, and then thermal treatment is performed on the oxide semiconductor layer provided with an aluminum oxide film at a temperature lower than or equal to 450° C.Type: GrantFiled: April 17, 2012Date of Patent: April 29, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Junichi Koezuka, Naoto Yamade, Kyoko Yoshioka, Yuhei Sato, Mari Terashima
-
Publication number: 20120319100Abstract: A miniaturized semiconductor device in which an increase in power consumption is suppressed and a method for manufacturing the semiconductor device are provided. A highly reliable semiconductor device having stable electric characteristics and a method for manufacturing the semiconductor device are provided. An oxide semiconductor film is irradiated with ions accelerated by an electric field in order to reduce the average surface roughness of a surface of the oxide semiconductor film. Consequently, an increase in the leakage current and power consumption of a transistor can be suppressed. Moreover, by performing heat treatment so that the oxide semiconductor film includes a crystal having a c-axis substantially perpendicular to the surface of the oxide semiconductor film, a change in electric characteristics of the oxide semiconductor film due to irradiation with visible light or ultraviolet light can be suppressed.Type: ApplicationFiled: May 30, 2012Publication date: December 20, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kyoko YOSHIOKA, Junichi KOEZUKA, Shinji OHNO, Yuichi SATO, Shinya SASAGAWA
-
Publication number: 20120280234Abstract: A highly reliable semiconductor device which is formed using an oxide semiconductor and has stable electric characteristics is provided. A semiconductor device which includes an amorphous oxide semiconductor layer including a region containing oxygen in a proportion higher than that in the stoichiometric composition, and an aluminum oxide film provided over the amorphous oxide semiconductor layer is provided. The amorphous oxide semiconductor layer is formed as follows: oxygen implantation treatment is performed on a crystalline or amorphous oxide semiconductor layer which has been subjected to dehydration or dehydrogenation treatment, and then thermal treatment is performed on the oxide semiconductor layer provided with an aluminum oxide film at a temperature lower than or equal to 450° C.Type: ApplicationFiled: April 17, 2012Publication date: November 8, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Junichi KOEZUKA, Naoto YAMADE, Kyoko YOSHIOKA, Yuhei SATO, Mari TERASHIMA