Patents by Inventor Teruhisa Kuroki

Teruhisa Kuroki 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: 11008409
    Abstract: Provided is a method for producing a butene polymer, comprising: a polymerization step of performing polymerization reaction by contacting a raw material component comprising 20% by mass or more of isobutene with a Lewis acid catalyst; and a distillation step of subjecting a solution to be treated containing a reaction product of the polymerization reaction and a butene oligomer added to the reaction product to distillation treatment to obtain the butene polymer, wherein an amount of the butene oligomer added is 25 parts by mass or larger with respect to 100 parts by mass of the reaction product.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: May 18, 2021
    Assignee: ENEOS Corporation
    Inventors: Tatsuo Yamaguchi, Koichi Sato, Tatsuya Chiba, Teruhisa Kuroki
  • Publication number: 20200270377
    Abstract: Provided is a method for producing a butene polymer, comprising: a polymerization step of performing polymerization reaction by contacting a raw material component comprising 20% by mass or more of isobutene with a Lewis acid catalyst; and a distillation step of subjecting a solution to be treated containing a reaction product of the polymerization reaction and a butene oligomer added to the reaction product to distillation treatment to obtain the butene polymer, wherein an amount of the butene oligomer added is 25 parts by mass or larger with respect to 100 parts by mass of the reaction product.
    Type: Application
    Filed: December 15, 2016
    Publication date: August 27, 2020
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Tatsuo YAMAGUCHI, Koichi SATO, Tatsuya CHIBA, Teruhisa KUROKI
  • Patent number: 9862785
    Abstract: A method for producing an olefin polymer, in which an olefin compound is polymerized in the presence of a Lewis acid catalyst at a temperature of 0° C. or lower to obtain an olefin polymer, the method comprising a step of feeding a raw material liquid including the olefin compound to a reactor provided with a cooling unit, a step of polymerizing the olefin compound in the reactor to obtain a reaction liquid including the olefin polymer, a deactivation step of adding a deactivator to the reaction liquid taken out from the reactor to deactivate the Lewis acid catalyst, and a step of supplying the reaction liquid after the deactivation step to a cold recovery unit to recover cold from the reaction liquid, wherein the amount of the Lewis acid catalyst is 0.5×10?3 to 1.0×10?1 mol % based on the total amount of the olefin compound.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: January 9, 2018
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Tatsuya Chiba, Koichi Sato, Teruhisa Kuroki, Ryuichiro Furusawa, Takeshi Omata
  • Publication number: 20170107311
    Abstract: A method for producing an olefin polymer, in which an olefin compound is polymerized in the presence of a Lewis acid catalyst at a temperature of 0° C. or lower to obtain an olefin polymer, the method comprising a step of feeding a raw material liquid including the olefin compound to a reactor provided with a cooling unit, a step of polymerizing the olefin compound in the reactor to obtain a reaction liquid including the olefin polymer, a deactivation step of adding a deactivator to the reaction liquid taken out from the reactor to deactivate the Lewis acid catalyst, and a step of supplying the reaction liquid after the deactivation step to a cold recovery unit to recover cold from the reaction liquid, wherein the amount of the Lewis acid catalyst is 0.5×10?3 to 1.0×10?1 mol % based on the total amount of the olefin compound.
    Type: Application
    Filed: February 20, 2015
    Publication date: April 20, 2017
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Tatsuya CHIBA, Koichi SATO, Teruhisa KUROKI, Ryuichiro FURUSAWA, Takeshi OMATA
  • Patent number: 6476284
    Abstract: An efficient dehalogenation can be carried out by a method which comprises treating an organic compound containing a compound of halogen, such as fluorine or chlorine, as an impurity and having non-conjugated carbon-carbon double bonds, for example, butene polymer produced with a boron trifluoride catalyst, with an inorganic solid treating agent containing aluminum atoms. When the dehalogenation is conducted in the presence of a basic substance such as ammonia or an amine, it can be continued over long while inhibiting the isomerization of the non-conjugated carbon-carbon double bonds.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: November 5, 2002
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Koichi Ohashi, Tsutomu Takashima, Teruhisa Kuroki, Koji Fujimura, Yuichi Tokumoto
  • Patent number: 5665496
    Abstract: A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming a light-irradiated region where a light irradiation amount is different in two steps; (c) developing a larger light-irradiated portion to lay-open the transparent electrically conductive layer followed by electrodepositing a light shielding layer thereon; (d) forming on the positive photosensitive coating film undeveloped in the step (c) a light-irradiated region where a light irradiation amount is different in two steps; (e) developing a larger light-irradiated portion of the photosensitive coating film to lay-open the transparent electrically conductive layer followed by electrodepositing a colored coating thereon; (f) forming on the positive photosensitive coating film undeveloped in the step (e) a light-irradiated region where a light irradiation amount is different in at least three steps; and (g) developing the photosensi
    Type: Grant
    Filed: June 13, 1995
    Date of Patent: September 9, 1997
    Assignees: Nippon Oil Co., Ltd., Dai Nippon Printing Co., Ltd.
    Inventors: Hiroyoshi Omika, Yutaka Otsuki, Hitoshi Yuasa, Eiji Yoda, Toru Nakamura, Masayuki Ando, Teruhisa Kuroki, Norikatsu Ono
  • Patent number: 5523383
    Abstract: A process for the preparation of a photocurable resin which comprises the steps of(I) (a) imidating 20 to 80 mole % of the acid arthydride groups present in an adduct prepared by the addition reaction of an .alpha.,.beta.-unsaturated dicarboxylic acid arthydride to a conjugated diene polymer or copolymer with a primary amine to produce water and an amide,(b) reacting the thus formed water as a by-product with at least a part of the remaining acid arthydride groups in said adduct to produce the succinic acid groups by opening the ring of said acid arthydride groups,(II) dehydrating the thus produced succinic acid groups by heating to cause ring closure again thereby forming acid anhydride groups and(III) reacting at least a part, preferably at least 50 mole %, of the acid anhydride rings present in the polymer with an .alpha.,.beta.-unsaturated monocarboxylic acid ester having an alcoholic hydroxyl group to conduct a half-esterification by opening the ring of said acid arthydride groups.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: June 4, 1996
    Assignee: Nippon Petrochemicals Co., Ltd.
    Inventors: Nobuo Ikeda, Teruhisa Kuroki, Tatsuo Yamaguchi, Hiroyoshi Oomiya