Patents by Inventor Hideaki Kiniwa
Hideaki Kiniwa 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: 5518627Abstract: A method for demineralizing water or an aqueous solution, which comprises contacting the water or the aqueous solution to be treated to a strongly basic anion exchanger made of a crosslinked polymer having a constituting unit of the following formula (I): ##STR1## wherein A is a C.sub.1-2 linear alkylene group, B is a C.sub.4-8 linear alkylene group, each of R1, R2 and R3 which may be the same or different, is a C.sub.1-4 alkyl group or a C.sub.2-4 alkanol group, X is a counter ion coordinated on the ammonium group, and the benzene ring D may have an alkyl group or a halogen atom as a substituent.Type: GrantFiled: March 1, 1995Date of Patent: May 21, 1996Assignees: Mitsubishi Chemical Corporation, Tohoku Electric Power Co., Inc.Inventors: Masao Tomoi, Teruo Onozuka, Manabu Shindo, Hideaki Kiniwa, Hirohisa Kubota, Shintaro Sawada
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Patent number: 5173421Abstract: This invention relates to cell culture carriers consisting of a porous support, at least a part of which surface being coated with a water-insoluble polymer constituted by (meth)acrylic acid ester and/or (meth)acrylamides and a cross-linking agent, and having a positively chargeable chemical moiety on the polymer surface. The present carriers have enabled the high-density cell culture in any type of the culture methods.Type: GrantFiled: December 12, 1989Date of Patent: December 22, 1992Assignee: Mitsubishi Kasei CorporationInventors: Hideaki Kiniwa, Hirohisa Kubota
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Patent number: 5096971Abstract: An adsorbent for optical resolution obtained by graft polymerizing an optically active vinyl monomer of the formula: ##STR1## wherein X is --CONH--, --COO-- or --NHCOO--, R.sup.1 is a hydrogen atom or a methyl group, and each of R.sup.2 to R.sup.4 which are different from one another, is a hydrogen atom, a hydrocarbon group or an alkoxycarbonyl group, or R.sup.2 and R.sup.3 together form a ring, to a crosslinked polymer carrier having groups to which said monomer is graft polymerizable.Type: GrantFiled: October 20, 1989Date of Patent: March 17, 1992Assignee: Mitsubishi Kasei CorporationInventors: Takashi Nishikaji, Hideaki Kiniwa, Tsunehiko Kurata
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Patent number: 4908392Abstract: A process for producing crosslinked polymer particles which comprises a first step of polymerizing a polymerizable monomer containing from 0.1 to 2.0% by weight, based on the entire polymerizable monomer, of a crosslinkable monomer in a medium in which the polymerizable monomer is soluble but the resulting polymer is insoluble, to obtain crosslinked polymer particles having a particle size of from 0.8 to 10 .mu.m, and a second step of letting the crosslinked polymer particles absorb from 1 to 50 times by weight of a polymerizable monomer containing from 2 to 100% by weight, based on the entire polymerizable monomer, of a crosslinkable monomer in an aqueous medium, followed by polymerization to obtain crosslinked polymer particles having a particle size of from 1 to 30 .mu.m and a crosslinking degree of from 1.0 to 98%.Type: GrantFiled: March 27, 1989Date of Patent: March 13, 1990Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Kusano, Hideaki Kiniwa, Akihiro Shimura, Masahiko Annaka
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Patent number: 4906698Abstract: A process for producing crosslinked polymer particles which comprises a first step of polymerizing a polymerizable monomer containing from 0.1 to 2.0% by weight, based on the entire polymerizable monomer, of a crosslinkable monomer in a medium in which the polymerizable monomer is soluble but the resulting polymer is insoluble, to obtain crosslinked polymer particles having a particle size of from 0.8 to 10 .mu.m, and a second step of letting the crosslinked polymer particles absorb from 1 to 50 times by weight of a polymerizable monomer containing from 2 to 100% by weight, based on the entire polymerizable monomer, of a crosslinkable monomer in an aqueous medium, followed by polymerization to obtain crosslinked polymer particles having a particle size of from 1 to 30 .mu.m and a crosslinking degree of from 1.Type: GrantFiled: March 27, 1989Date of Patent: March 6, 1990Assignee: Mitsubushi Kasei CorporationInventors: Hiroshi Kusano, Hideaki Kiniwa, Akihiro Shimura, Masahiko Annaka
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Patent number: 4851382Abstract: A separation medium useful as an adsorbent of liquid chromatography for optical resolution of racemic mixtures is disclosed, which comprises a reversed phase support coated with an optically active amino acid derivative represented by formula (I): ##STR1## wherein R.sub.1 represents a straight or branched alkyl group having from 1 to 3 carbon atoms; and R.sub.2 and R.sub.3 each represents a straight or branched alkyl group having from 4 to 12 carbon atoms which may contain an aromatic group or an unsaturated alkyl group.The separation medium is applicable to optical resolution of a wide range of DL-amino acids and exhibits excellent durability.Type: GrantFiled: July 19, 1988Date of Patent: July 25, 1989Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Kusano, Hideaki Kiniwa, Akihiro Shimura, Masahiko Annaka
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Patent number: 4785021Abstract: A method of adsorbing a substance such as an optically active substance, comprising contacting a solution of the substance in a solvent with an adsorbent consisting of a cross-linked polymer comprisingan optically active, synthetic poly(amino acid) represented by the general formula (I): ##STR1## wherein R stands for an organic group, R' stands for hydrogen or an alkyl group and n is an integer of at least 5, which may be protected at a terminal amino group anda carrier polymer supporting said synthetic poly(amino acid) thereon, said carrier polymer having affinity for said solvent. A method for producing the cross-linked polymer is also described.The adsorbent is especially useful for optical resolution of racemic mixtures.Type: GrantFiled: February 5, 1988Date of Patent: November 15, 1988Assignees: Research Development Corp. of Japan, Mitsubishi Kasei CorporationInventor: Hideaki Kiniwa
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Patent number: 4747956Abstract: A method of adsorbing a substance such as an optically active substance, comprising contacting a solution of the substance in a solvent with an adsorbent consisting of a cross-linked polymer comprising an optically active, synthetic poly(amino acid) represent by the general formula (I): ##STR1## wherein R stands for an organic group, R' stands for hydrogen or an alkyl group an n is an integer of at least 5, which may be protected at a terminal amino group and a carrier polymer supporting said synthetic poly(amino acid) thereon, said carrier polymer having affinity for said solvent. A method for producing the cross-linked polymer is also described. The adsorbent is especially useful for optical resolution of racemic mixtures.Type: GrantFiled: March 17, 1987Date of Patent: May 31, 1988Assignee: Research Development CorporationInventor: Hideaki Kiniwa
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Patent number: 4694044Abstract: A method of adsorbing a substance such as an optically active substance, comprising contacting a solution of the substance in a solvent with an adsorbent consisting of a cross-linked polymer comprising an optically active, synthetic poly(amino acid) represent by the general formula (I): ##STR1## wherein R stands for an organic group, R' stands for hydrogen or an alkyl group and n is an integer of at least 5, which may be protected at a terminal amino group and a carrier polymer supporting said synthetic poly(amino acid) thereon, said carrier polymer having affinity for said solvent. A method for producing the cross-linked polymer is also described.The adsorbent is especially useful for optical resolution of racemic mixtures.Type: GrantFiled: March 6, 1985Date of Patent: September 15, 1987Assignee: Research Development Corp. of JapanInventor: Hideaki Kiniwa
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Patent number: 4285789Abstract: In a cationic electrodeposition process for coating an electric conductive substrate as a cathode with an electrodeposition process-coating composition containing a resin; an improvement characterized in that said resin is a resin having hydroxyl groups, tertiary amino groups, quaternary ammonium groups and blocked isocyanate groups which are reactive with hydroxyl group at an elevated temperature which is obtained by reacting(a) a polyisocyanate;(b) a polyhydroxyl compound;(c) a hydroxyl compound having tertiary amino group;(d) a hydroxyl compound having quaternary ammonium group; and(e) a monofunctional blocking agent.The coated layer has excellent anticorrosive characteristic, mechanical characteristics and the coating composition has excellent stability for aging.Type: GrantFiled: February 7, 1980Date of Patent: August 25, 1981Assignee: Mitsubishi Chemical Industries, Ltd.Inventors: Yoshimichi Kobayashi, Yukio Tsuge, Susumu Hirako, Hideaki Kiniwa