Patents by Inventor Shunichiro Nakatsukasa
Shunichiro Nakatsukasa 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: 11511237Abstract: A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.Type: GrantFiled: March 9, 2021Date of Patent: November 29, 2022Assignee: ASTOM CORPORATIONInventors: Maki Kinoshita, Masayuki Kishino, Shunichiro Nakatsukasa, Kenji Fukuta
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Publication number: 20210187446Abstract: A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.Type: ApplicationFiled: March 9, 2021Publication date: June 24, 2021Applicant: ASTOM CorporationInventors: Maki KINOSHITA, Masayuki KISHINO, Shunichiro NAKATSUKASA, Kenji FUKUTA
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Patent number: 10974209Abstract: A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.Type: GrantFiled: August 30, 2017Date of Patent: April 13, 2021Assignee: ASTOM CORPORATIONInventors: Maki Kinoshita, Masayuki Kishino, Shunichiro Nakatsukasa, Kenji Fukuta
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Publication number: 20190176098Abstract: A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.Type: ApplicationFiled: August 30, 2017Publication date: June 13, 2019Applicant: ASTOM CorporationInventors: Maki KINOSHITA, Masayuki KISHINO, Shunichiro NAKATSUKASA, Kenji FUKUTA
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Patent number: 8980431Abstract: A primer coating composition is provided for an optical article capable of forming a coating layer having excellent impact resistance, abrasion resistance, adhesion and high refractive index to an optical base material, having high refractive index, specifically a plastic lens without occurrence of poor appearance such as ununiformity, cloudiness, etc. and regardless of the materials of the plastic lens. A primer composition for an optical article may comprises urethane resin having a polycarbonate-derived skeleton, polyester resin, inorganic oxide fine particles and water, and water-soluble organic solvent, if necessary.Type: GrantFiled: September 9, 2011Date of Patent: March 17, 2015Assignee: Tokuyama CorporationInventors: Katsuhiro Mori, Shunichiro Nakatsukasa
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Publication number: 20130164540Abstract: A primer coating composition is provided for an optical article capable of forming a coating layer having excellent impact resistance, abrasion resistance, adhesion and high refractive index to an optical base material, having high refractive index, specifically a plastic lens without occurrence of poor appearance such as ununiformity, cloudiness, etc. and regardless of the materials of the plastic lens. A primer composition for an optical article may comprises urethane resin having a polycarbonate-derived skeleton, polyester resin, inorganic oxide fine particles and water, and water-soluble organic solvent, if necessary.Type: ApplicationFiled: September 9, 2011Publication date: June 27, 2013Inventors: Katsuhiro Mori, Shunichiro Nakatsukasa
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Publication number: 20110317239Abstract: [Problems] A coating composition preferably used for forming a hard coating by being applied and cured on a light-transmitting member such as a highly refractive plastic lens or a highly refractive photochromic plastic lens having a function for developing a color, the coating composition markedly improving weather resistance (preventing discoloration) while sustaining high refractive index, scratch resistance and excellent adhesion to the optical material. [Means for Solution] The coating composition comprises (A) a fine granular metal oxide containing titanium oxide and (B) a fine granular metal oxide containing titanium oxide having dissimilar properties as selected by a specific light irradiation test and, further, contains (C) an epoxy group-containing organosilicon compound such as ?-glycidoxypropyltrimethoxysilane, (D) water, (E) an organic solvent such as methyl alcohol, and (F) a curing catalyst such as aluminum acetyl acetonato or magnesium perchlorate at specific ratios.Type: ApplicationFiled: May 13, 2010Publication date: December 29, 2011Inventors: Katsuhiro Mori, Shunichiro Nakatsukasa
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Publication number: 20110304817Abstract: [Problem] To provide a coating composition for forming a hard coating which, by itself, favorably adheres to a plastic optical substrate, and effectively prevents the occurrence of cracks caused by the thermal hysteresis at the time of curing. [Means for Solution] The coating composition for forming a hard coating, contains a fine inorganic oxide particle, a hydrolyzable organosilicon compound, water, a curing catalyst and an organic solvent, wherein cyclic ketone is contained in an amount of 0.10 parts by mass to 30.00 parts by mass per 100 parts by mass of the total of the fine inorganic oxide particle and the hydrolyzable organosilicon compound.Type: ApplicationFiled: April 9, 2010Publication date: December 15, 2011Inventors: Shunichiro Nakatsukasa, Katsuhiro Mori
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Publication number: 20110244244Abstract: To provide a coating composition capable of forming a hard coat layer having excellent transparency and scratch resistance on the surface of an optical resin substrate such as a plastic lens, and exhibiting long-term storage stability. [Means for Solution] The coating composition comprises (A) a fine particulate composite metal oxide, (B?) a hydrolyzed product obtained by the hydrolysis of (B) a hydrolyzable organosilicon compound containing (B1) an organosilicon compound that has an epoxy group, such as ?-glycidoxypropyltrimethoxysilane, (C) water, (D1) a low-boiling lowly viscous alcohol having not more than 3 carbon atoms, such as methanol or ethanol, (D2) a low-boiling highly viscous alcohol such as t-butanol, (D3) a high-boiling organic solvent having a boiling point of 150° C. to 200° C., such as diacetone alcohol, and (E) a curing catalyst such as tris(2,4-pentanedionato)aluminum(III), the mass ratio (D1/C) of the component (D1) and the component (C) being in a range of 1.80 to 7.Type: ApplicationFiled: January 12, 2010Publication date: October 6, 2011Applicant: TOKUYAMA CORPORATIONInventors: Shunichiro Nakatsukasa, Katsuhiro Mori