Patents by Inventor Junko Katayama
Junko Katayama 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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Publication number: 20230002650Abstract: The present invention is to provide an adhesive composition which comprises a copolymer A which contains a recurring unit having a cyclic ether structure and a recurring unit having a benzophenone structure, and a copolymer B which contains a recurring unit having a betaine structure and a recurring unit having a hydroxyl group, a cured product thereof, and a method for producing the cured product. The adhesive composition of the present invention is capable of curing in water, has high hydrophilicity, and is capable of forming a cured product having an excellent ability to inhibit adhesion of biological substances.Type: ApplicationFiled: August 25, 2020Publication date: January 5, 2023Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, NISSAN CHEMICAL CORPORATIONInventors: Masayasu TOTANI, Keiji TANAKA, Hisao MATSUNO, Masaaki OZAWA, Junko KATAYAMA
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Patent number: 11078254Abstract: Provided is a highly sensitive and less expensive lectin-immobilized base material (for example, a lectin plate), such as lectin-immobilized base material having stable qualities and being able to be sufficiently washed after a target sugar chain-containing antigen binds thereto. Further provided is a method for immobilizing lectin to a base material therefor. Particularly provided are: a method whereby a lectin-peptide fusion, in which a peptide capable of adsorbing to a base material surface such as a polystyrene (PS) tag is fused with the N-terminal side or C-terminal side of lectin capable of recognizing a target sugar chain, is immobilized on the peptide side to a base material; and a lectin-immobilized base material produced by this method. By using the lectin-immobilized base material, a target sugar chain-containing antigen can be highly sensitively and evenly measured and, moreover, target sugar chain-containing cells, etc. can be separated (concentrated and harvested).Type: GrantFiled: April 11, 2018Date of Patent: August 3, 2021Assignees: National Institute of Advanced Industrial Science and Technology, Nissan Chemical Corporation, National University Corporation Kyoto Institute of TechnologyInventors: Hiroaki Tateno, Junko Katayama, Kazutaka Matoba, Yoichi Kumada
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Patent number: 10889791Abstract: The invention provides a coating agent for a flow passage which comprises a copolymer containing a recurring unit which contains an organic group of the formula (a) wherein Ua1 and Ua2 are defined herein, and a recurring unit which contains an organic group of the formula (b) wherein Ub1, Ub2, Ub3, and An? are defined herein. The invention also provides a flow passage device having the coating agent for a flow passage on at least part of an inner surface of a flow passage, a platelet-producing flow passage device and a method for manufacturing the same.Type: GrantFiled: October 14, 2016Date of Patent: January 12, 2021Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Junko Katayama, Yoshiomi Hiroi, Ayako Aihara, Natsuki Abe, Taito Nishino
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Publication number: 20200123222Abstract: A purpose of the present invention is to provide a highly sensitive and less expensive lectin-immobilized base material (for example, a lectin plate), said lectin-immobilized base material having stable qualities and being able to be sufficiently washed after a target sugar chain-containing antigen binds thereto. Another purpose of the present invention is to provide a method for immobilizing lectin to a base material therefor. Provided are: a method whereby a lectin-peptide fusion, in which a peptide capable of adsorbing to a base material surface such as a PS tag is fused with the N-terminal side or C-terminal side of lectin capable of recognizing a target sugar chain, is immobilized on the peptide side to a base material; and a lectin-immobilized base material produced by this method. By using the lectin-immobilized base material, a target sugar chain-containing antigen can be highly sensitively and evenly measured and, moreover, target sugar chain-containing cells, etc.Type: ApplicationFiled: April 11, 2018Publication date: April 23, 2020Inventors: Hiroaki Tateno, Junko Katayama, Kazutaka Matoba, Yoichi Kumada
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Publication number: 20180305652Abstract: The invention provides a coating agent for a flow passage which comprises a copolymer containing a recurring unit which contains an organic group of the formula (a) wherein Ua1 and Ua2 are defined herein, and a recurring unit which contains an organic group of the formula (b) wherein Ub1, Ub2, Ub3, and An? are defined herein. The invention also provides a flow passage device having the coating agent for a flow passage on at least part of an inner surface of a flow passage, a platelet-producing flow passage device and a method for manufacturing the same.Type: ApplicationFiled: October 14, 2016Publication date: October 25, 2018Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Junko KATAYAMA, Yoshiomi HIROI, Ayako AIHARA, Natsuki ABE, Taito NISHINO
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Publication number: 20180022830Abstract: An object of the present invention is to provide a polydimethylsiloxane substrate to which a peptide having an affinity for polydimethylsiloxane (PDMS) is bound; a method for immobilizing a target protein on a polydimethylsiloxane substrate; a peptide having an affinity for PDMS; a polynucleotide encoding a peptide having an affinity for PDMS; and a vector using thereof. A polydimethylsiloxane substrate to which a peptide having an affinity for polydimethylsiloxane is bound, the peptide comprising the following peptide (1a) or (1b), or a fragment thereof: (1a) a peptide comprising an amino acid sequence represented by at least one member selected from the group consisting of SEQ ID NOs: 1 to 9; and (1b) a peptide comprising the amino acid sequence of (1a) in which one or more amino acids are deleted, substituted, and/or added, the peptide having an affinity for polydimethylsiloxane.Type: ApplicationFiled: February 12, 2016Publication date: January 25, 2018Inventors: Yoichi KUMADA, Ryoko OTSUKI, Ryota AKAI, Junko KATAYAMA, Kazutaka MATOBA
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Patent number: 7534547Abstract: A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1): A-[(J)m-(X-Pro)]n??(1) wherein A represents a hydrophobic unit comprising at least one kind of hydrophobic groups selected from a hydrocarbon group and a heterocyclic group, J represents a connecting group, X-Pro represents a hydrophilic group protected by a protective group Pro which is removable by light exposure, m represents 0 or 1, and n represents an integer of not less than 1. The protective group Pro may be removable by light exposure in association with the photosensitizer (especially, a photo acid generator), or may be a hydrophobic protective group. The hydrophilic group may be a hydroxyl group or a carboxyl group. The photoactive compound has high sensitivity to a light source of short wavelength beams, for resist application, therefore, the photoactive compound is advantageously used for forming a pattern with high resolution.Type: GrantFiled: March 29, 2002Date of Patent: May 19, 2009Assignee: Osaka Gas Company LimitedInventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima, Atsushi Niwa
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Patent number: 6921623Abstract: A photosensitive resin composition for using in combination with a photosensitizer comprises an active component selected from an active metal alkoxide represented by the formula (1) or a polycondensate thereof and a particle represented by the formula (2), (X)m-n-Mm-[(U1)p—(U2-Z)t]n??(1) P—[(Y)s—{(U1)p—(U2-Z)t}]k??(2) wherein, X shows a hydrogen, a halogen, an alkoxy group or an alkoxycarbonyl group, M shows a metal atom whose valence m is not less than 2, U1 shows a first connecting unit, U2 shows a second connecting unit and Z shows a group causing a difference in solubility by light exposure, P shows a fine particle carrier, Y shows a coupling residue, n shows an integer of not less than 1 and m>n, p shows 0 or 1, t shows 1 or 2, k shows an integer of not less than 1, and s shows 0 or 1).Type: GrantFiled: December 4, 2001Date of Patent: July 26, 2005Assignee: KRI, Inc.Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima
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Publication number: 20030211421Abstract: A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1):Type: ApplicationFiled: November 27, 2002Publication date: November 13, 2003Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima, Atsushi Niwa
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Publication number: 20030064320Abstract: A photosensitive resin composition for using in combination with a photosensitizer comprises an active component selected from an active metal alkoxide represented by the formula (1) or a polycondensate thereof and a particle represented by the formula (2),Type: ApplicationFiled: August 5, 2002Publication date: April 3, 2003Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima