Patents Assigned to JSR Micro N.V.
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Patent number: 11884705Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased antibody dissociation rate under acidic conditions, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.Type: GrantFiled: September 25, 2018Date of Patent: January 30, 2024Assignees: JSR CORPORATION, JSR Life Sciences Corporation, JSR Life Sciences, LLC, JSR Micro N.V.Inventors: Jun-ichi Yasuoka, Kiichi Yoshimura, Tomoaki Haga
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Patent number: 11753449Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased alkali tolerance, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.Type: GrantFiled: September 25, 2018Date of Patent: September 12, 2023Assignees: JSR CORPORATION, JSR Life Sciences Corporation, JSR Life Sciences, LLC, JSR Micro N.V.Inventors: Jun-ichi Yasuoka, Kiichi Yoshimura
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Patent number: 11421102Abstract: To provide a porous particle with which non-specific adsorption is hardly generated although the porous particle is a synthetic polymer-based particle, the mechanical strength is high, and the dynamic binding capacity is high in a case where a ligand is bound to the porous particle; and a method for producing the same. A method for producing a porous particle, including the following steps 1 and 2; (step 1) dissolving at least one or more of polymers selected from the group consisting of a vinyl alcohol polymer and an ethylene-vinyl alcohol copolymer in an aqueous solvent to prepare a polymer solution; and (step 2) dispersing the polymer solution in a non-aqueous solvent to form a W/O emulsion.Type: GrantFiled: November 24, 2016Date of Patent: August 23, 2022Assignees: JSR CORPORATION, JSR LIFE SCIENCES, LLC, JSR MICRO N.V.Inventors: Kunihiko Kobayashi, Masaaki Kanahara
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Publication number: 20220242975Abstract: An affinity support having improved binding capacity for target proteins. An immunoglobulin-binding protein including a mutant immunoglobulin-binding domain, an affinity support including a solid-phase support and the immunoglobulin-binding protein immobilized thereto. The mutant immunoglobulin-binding domain consists of an amino acid sequence having at least 85% identity with an amino acid sequence of any of SEQ ID NOs: 1 to 12.Type: ApplicationFiled: February 28, 2020Publication date: August 4, 2022Applicants: JSR CORPORATION, JSR LIFE SCIENCES, LLC, JSR MICRO N.V.Inventors: Toshinari HONDA, Satoshi NAKAMURA, Shunsuke ONOGI, Tomoaki HAGA
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Patent number: 11366108Abstract: This invention relates to a method of producing a probe-bound carrier, a probe-bound carrier and a method of detecting or separating a target substance. The method of producing a probe-bound carrier includes: step 1 of mixing a carrier having tosyl groups and a probe; and step 2 of reducing the amount of tosyl groups on a surface of a carrier, in which a proportion of area S2 that is occupied by one tosyl group on a surface of the carrier obtained in the step 2 with respect to area S1A that is occupied by one tosyl group on a surface of the carrier used in the step 1 (S2/S1A×100%) is not less than 140%.Type: GrantFiled: March 27, 2018Date of Patent: June 21, 2022Assignees: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR Life Sciences, LLC, JSR Micro N.V.Inventors: Yuuichi Ueya, Yasuhito Satou
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Patent number: 11320430Abstract: The present invention relates to a magnetic particle dispersion, and the magnetic particle dispersion includes a magnetic particle, an isothiazoline compound, and an aqueous medium.Type: GrantFiled: December 27, 2017Date of Patent: May 3, 2022Assignees: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR Life Sciences, LLC, JSR Micro N.V.Inventors: Hirokazu Kai, Kousuke Hiroki, Yuuichi Ueya
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Patent number: 11237162Abstract: The present invention relates to composite particles, coated particles, a method of producing composite particles, a ligand-containing solid phase carrier, and a method of detecting or separating a target substance in a sample. The above described composite particles each contains an organic polymer and inorganic nanoparticles, wherein the content of the inorganic nanoparticles in the composite particles is more than 80% by mass, and wherein the composite particles have a volume average particle size of from 10 to 1,000 nm.Type: GrantFiled: May 23, 2017Date of Patent: February 1, 2022Assignees: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR LIFE SCIENCES, LLC, JSR Micro N.V.Inventors: Takeaki Masuda, Shunsuke Onogi
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Publication number: 20210179671Abstract: An affinity carrier may have improved alkali resistance. An immunoglobulin-binding protein containing a mutant polypeptide chain, as well as an affinity carrier containing a solid-phase carrier to which the immunoglobulin-binding protein is bound, may be a mutant polypeptide chain having an amino acid sequence having at least 85% identity to an amino acid sequence indicated by any of SEQ ID NO: 1-6 and 57-62, having a predetermined mutation, and having immunoglobulin-binding activity.Type: ApplicationFiled: August 23, 2019Publication date: June 17, 2021Applicants: JSR CORPORATION, JSR MICRO INC., JSR MICRO N.V.Inventors: Tomoaki HAGA, Takashi ICHII, Shunsuke ONOGI, Satoshi NAKAMURA, Toshinari HONDA, Tomoyuki KAMIDE
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Publication number: 20210163545Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased alkali tolerance, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.Type: ApplicationFiled: September 25, 2018Publication date: June 3, 2021Applicants: JSR CORPORATION, JSR Life Sciences Corporation, JSR Micro Inc., JSR Micro N. V.Inventors: Jun-ichi YASUOKA, Kiichi YOSHIMURA
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Publication number: 20200360894Abstract: To provide a chromatography carrier that has excellent antifouling properties and exhibits excellent pressure-resistant performance and shatter-resistant performance. A chromatography carrier comprising: a polymer having a partial structure containing at least two groups represented by —C(?O)—NH—.Type: ApplicationFiled: August 23, 2018Publication date: November 19, 2020Applicants: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR MICRO INC., JSR MICRO N.VInventor: Tomoya NORINOBU
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Publication number: 20200319171Abstract: The present invention relates to composite particles, coated particles, a method of producing composite particles, a ligand-containing solid phase carrier, and a method of detecting or separating a target substance in a sample. The above described composite particles each contains an organic polymer and inorganic nanoparticles, wherein the content of the inorganic nanoparticles in the composite particles is more than 80% by mass, and wherein the composite particles have a volume average particle size of from 10 to 1,000 nm.Type: ApplicationFiled: May 23, 2017Publication date: October 8, 2020Applicants: JSR Micro N.V.C., JSR Corporation, JSR Life Sciences Corporation, JSR Micro, Inc., JSR Micro N.V.Inventors: Takeaki MASUDA, Shunsuke Onogi
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Publication number: 20200262873Abstract: Provided are a protein L-derived immunoglobulin binding protein having an increased antibody dissociation rate under acidic conditions, and an affinity support using the same. Disclosed are an immunoglobulin binding protein comprising at least one mutant of an immunoglobulin binding domain, and an affinity support comprising a solid-phase support having the immunoglobulin binding protein bound thereto. A mutant of the immunoglobulin binding domain consists of an amino acid sequence having an identity of at least 85% with the sequence set forth in any one of SEQ ID NO:1 to SEQ ID NO:9 and a predetermined mutation, and the mutant has immunoglobulin ? chain binding activity.Type: ApplicationFiled: September 25, 2018Publication date: August 20, 2020Applicants: JSR CORPORATION, JSR Life Sciences Corporation, JSR Micro Inc., JSR Micro N.V.Inventors: Jun-ichi YASUOKA, Kiichi YOSHIMURA, Tomoaki HAGA
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Publication number: 20200150113Abstract: To provide a novel technique with which the generation of aggregates over time in a dispersion liquid can be suppressed and a target substance can be detected with high sensitivity even if latex particles that have been stored are used. A method for storing in a container a latex particle dispersion liquid in which latex particles for an extracorporeal diagnostic agent are dispersed, the latex particles having a volume average particle size of 10 to 1000 nm and including a polymer containing 70 to 100% by mass of monomer units each derived from a monomer having an aryl group relative to the total monomer units, which is characterized in that the particle dispersion liquid is stored in the container by setting a ratio of a volume of a void space obtained by excluding a volume occupied by the particle dispersion liquid from an internal volume of the container to 0 to 25% (v/v) relative to the internal volume of the container.Type: ApplicationFiled: December 27, 2017Publication date: May 14, 2020Applicants: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR MICRO INC., JSR MICRO N.V.Inventor: Kazusa OOTA
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Publication number: 20190271696Abstract: The present invention relates to a magnetic particle dispersion, and the magnetic particle dispersion includes a magnetic particle, an isothiazoline compound, and an aqueous medium.Type: ApplicationFiled: December 27, 2017Publication date: September 5, 2019Applicants: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR Micro, Inc., JSR Micro N.V.Inventors: Hirokazu KAI, Kousuke HIROKI, Yuuichi UEYA
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Publication number: 20180284109Abstract: This invention relates to a method of producing a probe-bound carrier, a probe-bound carrier and a method of detecting or separating a target substance. The method of producing a probe-bound carrier includes: step 1 of mixing a carrier having tosyl groups and a probe; and step 2 of reducing the amount of tosyl groups on a surface of a carrier, in which a proportion of area S2 that is occupied by one tosyl group on a surface of the carrier obtained in the step 2 with respect to area S1A that is occupied by one tosyl group on a surface of the carrier used in the step 1 (S2/S1A×100%) is not less than 140%.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Applicants: JSR CORPORATION, JSR LIFE SCIENCES CORPORATION, JSR Micro, Inc., JSR Micro N.V.Inventors: Yuuichi Ueya, Yasuhito Satou