Patents by Inventor Hidenori Otsuka
Hidenori Otsuka 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: 11977362Abstract: In the conventional distributed control system, since each control device updates the data area at a timing when a control packet is received, in a case where there is a difference in communication delay between the control devices or in a case where the communication delay includes jitter, it is difficult to match the contents of data in all the control devices in a case of focusing on a certain moment during system operation. Therefore, depending on the start timing of a control application, the control application operates on the basis of different data between the control devices, thus limiting control performance improvement. Accordingly, time slots on the network are allocated according to the result of a calculation unit, and a cyclic memory synchronization update unit synchronizes the timing of reflecting data in the input/output and the cyclic memory and the timing of using data of a cyclic memory.Type: GrantFiled: August 19, 2020Date of Patent: May 7, 2024Assignee: HITACHI, LTD.Inventors: Tatsuya Maruyama, Yusaku Otsuka, Hidenori Omiya, Toshiki Shimizu, Iori Kobayashi, Kazutaka Onishi, Noritaka Matsumoto
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Patent number: 10835637Abstract: The present invention relates to a triblock copolymer having a polyethylene glycol-poly(D,L-lactide)-polyethylene glycol skeleton.Type: GrantFiled: August 23, 2016Date of Patent: November 17, 2020Assignees: 3-D Matrix, Ltd. (Tokyo, Japan), Tokyo University of Science FoundationInventors: Hidenori Otsuka, Daisuke Matsukuma, Noriaki Matsuda
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Patent number: 10596265Abstract: A nanogel comprising a self-organizing peptide, a chitosan and polyethylene glycol is described.Type: GrantFiled: August 24, 2015Date of Patent: March 24, 2020Assignees: 3-D Matrix, Ltd., Tokyo University of Science FoundationInventors: Hidenori Otsuka, Daisuke Matsukuma
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Publication number: 20180250435Abstract: The present invention relates to a triblock copolymer having a polyethylene glycol-poly(D,L-lactide)-polyethylene glycol skeleton.Type: ApplicationFiled: August 23, 2016Publication date: September 6, 2018Applicants: 3-D Matrix, Ltd., Tokyo University of Science FoundationInventors: Hidenori Otsuka, Daisuke Matsukuma, Noriaki Matsuda
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Publication number: 20170312370Abstract: A nanogel comprising a self-organizing peptide, a chitosan, and polyethylene glycol.Type: ApplicationFiled: August 24, 2015Publication date: November 2, 2017Applicants: 3-D Matrix, Ltd., Tokyo University of Science FoundationInventors: Hidenori Otsuka, Daisuke Matsukuma
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Patent number: 9156088Abstract: Disclosed are: Au—Ag core-shell nanorod particles wherein a cationic surfactant such as CTAB is substituted by an other compound; and a method for producing the Au—Ag core-shell nanorod particles. Specifically disclosed are Au—Ag core-shell nanorod particles which are characterized in that each of the nanorod particles comprises a gold nanorod particle that serves as the core, a shell layer that covers the surface of the gold nanorod particle and is formed from silver, and a copolymer that adsorbs on the surface of the shell layer. The Au—Ag core-shell nanorod particles are also characterized in that the copolymer is a block copolymer or graft copolymer that is obtained by polymerizing at least a polymerizable monomer (A) that has a group represented by general formula (I). In the formula, Ra represents an alkylene group having 2-7 carbon atoms.Type: GrantFiled: December 10, 2010Date of Patent: October 13, 2015Assignee: Tokyo University of Science Educational Foundation Administrative OrganizationInventors: Hidenori Otsuka, Toshihiko Kurosawa, Yoshihiro Saito, Koichi Kutsuzawa
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Patent number: 8658735Abstract: The graft copolymer comprises a polymerizable monomer (A1) represented by general formula (III) and a polymerizable monomer (B1) containing a pyridyl group, and a ligand can be bonded via the functional group at the terminus of R3a. In the formula, R1a represents a polymerizable group, R2a represents an alkylene group having a carbon number of 2-5, R3a represents an organic group having at a terminus a functional group selected from among an azide group, a phenyl azide group, a carboxyl group, a primary to quaternary amino group, an acetal group, an aldehyde group, a thiol group, a disulfide group, an active ester group, a trialkoxysilyl group, and a polymerizable group, and n represents any integer from 5 to 20,000.Type: GrantFiled: August 28, 2009Date of Patent: February 25, 2014Assignee: Tokyo University of Science Educational Foundation Administrative OrganizationInventors: Hidenori Otsuka, Masayuki Fukaishi, Takashi Ishiduka
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Publication number: 20120244225Abstract: Disclosed are: Au—Ag core-shell nanorod particles wherein a cationic surfactant such as CTAB is substituted by an other compound; and a method for producing the Au—Ag core-shell nanorod particles. Specifically disclosed are Au—Ag core-shell nanorod particles which are characterized in that each of the nanorod particles comprises a gold nanorod particle that serves as the core, a shell layer that covers the surface of the gold nanorod particle and is formed from silver, and a copolymer that adsorbs on the surface of the shell layer. The Au—Ag core-shell nanorod particles are also characterized in that the copolymer is a block copolymer or graft copolymer that is obtained by polymerizing at least a polymerizable monomer (A) that has a group represented by general formula (I). In the formula, Ra represents an alkylene group having 2-7 carbon atoms.Type: ApplicationFiled: December 10, 2010Publication date: September 27, 2012Inventors: Hidenori Otsuka, Toshihiko Kurosawa, Yoshihiro Saito
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Patent number: 8232329Abstract: An inkjet ink that prevents paper deformation such as curling, and also exhibits favorable pigment dispersibility. The inkjet ink includes at least a pigment, water, a water-soluble organic solvent having an ? value of not more than 65, and a dispersant, wherein the dispersant is a copolymer having a unit A represented by general formula (a) shown below and a unit B represented by general formula (b) shown below, and the mass ratio between the water-soluble organic solvent and the water satisfies (water-soluble organic solvent)/water=5/5 to 8/2. [In general formula (a), R1 represents a hydrogen atom or a lower alkyl group, and m represents an integer of 1 to 3.] [In general formula (b), R2 and R3 each represents a hydrogen atom or a lower alkyl group, wherein R2 and R3 may be the same or different, and n represents an integer of 1 to 250.Type: GrantFiled: August 27, 2009Date of Patent: July 31, 2012Assignees: Tokyo University of Science Educational Foundation Administrative Organization, Riso Kagaku CorporationInventors: Hidenori Otsuka, Masayuki Fukaishi, Takashi Ishizuka, Koji Ueno, Yoshihiro Saito, Teruaki Okawa, Naofumi Ezaki
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Publication number: 20120015440Abstract: A spheroid composite includes: a substrate including a cell-adhesive porous base material and plural hydrophilic regions and hydrophobic regions that are disposed on the porous base material and formed by curing a photosensitive composition, wherein the photosensitive composition includes a branched polyalkylene glycol derivative having three or more polyalkylene glycol groups, each having a polymerizable substituent at a terminal thereof, and a tri- or higher-valent linking group that binds to the polyalkylene glycol groups; and spheroids formed in the hydrophobic regions on the substrate, the plural spheroids having a uniform size. A spheroid-containing hydrogel, which includes a hydrogel and two or more spheroids having a uniform size with a diameter of from 70 ?m to 400 ?m that are disposed in the hydrogel in such a manner that the two or more spheroids do not contact each other, can favorably maintain the function of the plural spheroids contained within the hydrogel.Type: ApplicationFiled: September 8, 2009Publication date: January 19, 2012Applicant: TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORG.Inventors: Hidenori Otsuka, Tomomi Satomi, Koji Ueno, Masashi Yamamoto, Yuichi Nakasone, Kyoko Akashi
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Publication number: 20110269905Abstract: The graft copolymer comprises a polymerizable monomer (A1) represented by general formula (III) and a polymerizable monomer (B1) containing a pyridyl group, and a ligand can be bonded via the functional group at the terminus of R3a. In the formula, R1a represents a polymerizable group, R2a represents an alkylene group having a carbon number of 2-5, R3a represents an organic group having at a terminus a functional group selected from among an azide group, a phenyl azide group, a carboxyl group, a primary to quaternary amino group, an acetal group, an aldehyde group, a thiol group, a disulfide group, an active ester group, a trialkoxysilyl group, and a polymerizable group, and n represents any integer from 5 to 20,000.Type: ApplicationFiled: August 28, 2009Publication date: November 3, 2011Inventors: Hidenori Otsuka, Masayuki Fukaishi, Takashi Ishiduka
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Publication number: 20100159212Abstract: An inkjet ink that prevents paper deformation such as curling, and also exhibits favorable pigment dispersibility. The inkjet ink includes at least a pigment, water, a water-soluble organic solvent having an ? value of not more than 65, and a dispersant, wherein the dispersant is a copolymer having a unit A represented by general formula (a) shown below and a unit B represented by general formula (b) shown below, and the mass ratio between the water-soluble organic solvent and the water satisfies (water-soluble organic solvent)/water=5/5 to 8/2. [In general formula (a), R1 represents a hydrogen atom or a lower alkyl group, and m represents an integer of 1 to 3.] [In general formula (b), R2 and R3 each represents a hydrogen atom or a lower alkyl group, wherein R2 and R3 may be the same or different, and n represents an integer of 1 to 250.Type: ApplicationFiled: August 27, 2009Publication date: June 24, 2010Applicants: TOKYO UNIVERSITY OF SCIENCE EDUCATIONAL FOUNDATION ADMINISTRATIVE ORGANIZATION, RISO KAGAKU CORPORATIONInventors: Hidenori Otsuka, Masayuki Fukaishi, Takashi Ishizuka, Koji Ueno, Yoshihiro Saito, Teruaki Okawa, Naofumi Ezaki
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Patent number: 7691369Abstract: Parenchymal cells are cultivated on cultivated endothelial cells or cultivated fibroblasts which have been separated by a surface of a specific hydrophilic polymer, and which have been patterned. A culture which contains thus formed patterned spheroids of cultivated parenchymal cells is thereby provided by this invention. This culture maintains a function which is specific to the parenchymal cells over a long period of time.Type: GrantFiled: September 8, 2008Date of Patent: April 6, 2010Assignee: Transparent Inc.Inventors: Kazunori Kataoka, Hidenori Otsuka, Teruo Okano, Yukio Nagasaki, Yasuhiro Horiike
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Publication number: 20090011504Abstract: Parenchymal cells are cultivated on cultivated endothelial cells or cultivated fibroblasts which have been separated by a surface of a specific hydrophilic polymer, and which have been patterned. A culture which contains thus formed patterned spheroids of cultivated parenchymal cells is thereby provided by this invention. This culture maintains a function which is specific to the parenchymal cells over a long period of time.Type: ApplicationFiled: September 8, 2008Publication date: January 8, 2009Inventors: Kazunori Kataoka, Hidenori Otsuka, Teruo Okano, Yukio Nagasaki, Yasuhiro Horiike
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Patent number: 7470424Abstract: Parenchymal cells are cultivated on cultivated endothelial cells or cultivated fibroblasts which have been separated by a surface of a specific hydrophilic polymer, and which have been patterned. A culture which contains thus formed patterned spheroids of cultivated parenchymal cells is thereby provided by this invention. This culture maintains a function which is specific to the parenchymal cells over a long period of time.Type: GrantFiled: July 25, 2002Date of Patent: December 30, 2008Assignee: Transparent Inc.Inventors: Kazunori Kataoka, Hidenori Otsuka, Teruo Okano, Yukio Nagasaki, Yasuhiro Horiike
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Patent number: 7214500Abstract: A surface on which adsorption of protein (e.g., BSA) is markedly suppressed is provided, by contacting solutions of polymers whose chief component is poly(ethylene oxide) having binding sites to sensor surfaces with biosensor surfaces plural times to link the polymers.Type: GrantFiled: March 7, 2003Date of Patent: May 8, 2007Assignee: Toudai TLO, Ltd.Inventors: Kazunori Kataoka, Yukio Nagasaki, Hidenori Otsuka, Katsumi Uchida, Tadahito Takahashi, Miki Kato
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Patent number: 7129293Abstract: A crosslinked polymer or polymer fine particles which can be obtained through copolymerization of at least a macromonomer having a polyethylene glycol segment, a comonomer having tertiary amine groups in its side chains and a crosslinking agent are provided. Said crosslinked polymer can be provided in the form of polymer nano- or micro-spheres; and also as conjugate nano- or micro-spheres with their core parts fixing or encapsulating metal or semiconductor ultrafine particles.Type: GrantFiled: April 23, 2003Date of Patent: October 31, 2006Assignees: Japan Science and Technology Agency, NOF CorporationInventors: Kazunori Kataoka, Yukio Nagasaki, Hidenori Otsuka, Atsuhiko Ogura, Takehiko Ishii, Hisato Hayashi, Teppei Uno
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Patent number: 7122133Abstract: A stabilized dispersion of metal fine particles comprising, fine particles of metal which is obtained by reducing at least one metallic acid or salt thereof selected from the group consisting of haloauric acid, haloplatinic acid, silver nitrate and halorhodic acid by a reducing agent in the aqueous solution of (1) R-PEG-SX [R is a functional group selected from the group consisting of acetal, aldehyde, hydroxyl group, amino group, carboxyl group, active ester group, azide group, biotin group, monosaccharide, oligosaccharide, amino acid, nucleic acid, allyl group, vinyl benzyl group, methacryloyl group and acryloyl group, PEG is —(CH2CH2O)n—, X is H or pyridylthio group] or (2) R-PEG/PAMA (given structural formula A), and said fine particles load a polymer having PEG unit possessing above mentioned functional group on the surface.Type: GrantFiled: February 14, 2001Date of Patent: October 17, 2006Assignee: Japan Science & Technology AgencyInventors: Kazunori Kataoka, Yukio Nagasaki, Hidenori Otsuka, Takehiko Ishii
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Publication number: 20060100367Abstract: This invention provides latex particles wherein non-specific adsorption or binding of undesired impurities which usually accompanies the use of latex particles is inhibited, and a process to produce such latex particles. This invention also provides diagnostic agent which contains said particles. In another embodiment, this invention provides latex particles comprising both a ligand group-holding site which has a ligand group on the one terminal and is bound, on the other terminal, to latex particles, and which has a long chain of polyoxyethylene; and a non-specific adsorption-inhibiting site which is bound, at one terminal, to latex particles, and which has a short chain of polyoxyethylene. In this embodiment, this invention also provides a process to produce said particles.Type: ApplicationFiled: December 19, 2003Publication date: May 11, 2006Inventors: Yukio Nagasaki, Kazunori Kataoka, Tadahito Takahashi, Hidenori Otsuka, Noriyuki Ito, Kouichiro Ishigaki
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Patent number: 6927033Abstract: A polymer composition is provided, which contains a polymer or copolymer having a mercapto group at one end and functional group or ligand at the other end and also having a polyethylene glycol segment. Such a composition can form a biosensor surface of reduced non-specific adsorbability for proteins and the like.Type: GrantFiled: May 10, 2001Date of Patent: August 9, 2005Assignee: Toudai TLO, Ltd.Inventors: Kazunori Kataoka, Yukio Nagasaki, Hidenori Otsuka, Mitsuhiro Kaneko