Patents by Inventor Mizuho Saito
Mizuho Saito 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: 8618196Abstract: The present invention is a flame retardant resin composition including: 100 parts by weight of a resin component (component A) containing at least 50 wt % of a polycarbonate (component A-1) having a unit represented by the formula (A-1), and 1 to 100 parts by weight of an organic phosphorus compound (component B) represented by the formula (1): and a molded article thereof.Type: GrantFiled: December 10, 2009Date of Patent: December 31, 2013Assignee: Teijin LimitedInventors: Katsuhiro Yamanaka, Toshiyuki Miyake, Mizuho Saito, Masami Kinoshita
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Patent number: 8604107Abstract: There is provided a resin composition that comprises a polycarbonate resin derived from an ether diol such as isosorbide and that is excellent in flame retardancy, heat resistance, thermal stability, rigidity, transparency and moldability. The resin composition is a flame-retardant resin composition comprising 1 to 60 parts by weight of phosphorus compound (component B) having a thermal decomposition temperature of not higher than 340° C.Type: GrantFiled: May 28, 2008Date of Patent: December 10, 2013Assignee: Teijin LimitedInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
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Publication number: 20130030095Abstract: It is an object of the present invention to provide a flame retardant resin composition which is obtained from a plant-derived raw material and has high flame retardancy and excellent physical properties and a molded article thereof.Type: ApplicationFiled: December 10, 2009Publication date: January 31, 2013Applicant: TEIJIN LIMITEDInventors: Katsuhiro Yamanaka, Toshiyuki Miyake, Mizuho Saito, Masami Kinoshita
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Publication number: 20120301699Abstract: A polycarbonate resin which has a high biogenic matter content, excellent moisture absorption resistance, heat resistance, heat stability and moldability, and high surface energy, as well as a production process thereof. The polycarbonate resin contains 30 to 100 mol % of a unit represented by the following formula (1) in all the main chains and has (i) a biogenic matter content measured in accordance with ASTM D6866 05 of 25 to 100%, (ii) a specific viscosity at 20° C. of a solution prepared by dissolving 0.7 g of the resin in 100 ml of methylene chloride of 0.2 to 0.6 and (iii) an OH value of 2.5×103 or less.Type: ApplicationFiled: February 5, 2010Publication date: November 29, 2012Applicant: TEIJIN LIMITEDInventors: Masami Kinoshita, Mizuho Saito, Fumitaka Kondo
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Patent number: 8106143Abstract: A resin composition includes a polycarbonate resin derived from an ether diol residue such as isosorbide and has excellent impact resistance, heat resistance, heat stability and moldability. The resin composition includes a rubber polymer (component B) in an amount of 1 to 30 parts by weight based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent and has a glass transition temperature (Tg) of 145 to 165° C. and a 5% weight loss temperature (Td) of 320 to 400° C.Type: GrantFiled: May 16, 2008Date of Patent: January 31, 2012Assignee: Teijin LimitedInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
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Patent number: 8034894Abstract: A terminal modified polycarbonate having a high content of biogenic matter, excellent heat resistance, heat stability, moldability and moist absorption resistance and high surface energy and a manufacturing process thereof are provided. The terminal modified polycarbonate has a main chain essentially composed of a recurring unit represented by the following formula (1): has a specific viscosity at 20° C. of a solution obtained by dissolving 0.7 g of the polycarbonate in 100 ml of methylene chloride of 0.2 to 0.5, and contains a terminal group represented by the following formula (2) or (3) in an amount of 0.Type: GrantFiled: March 5, 2008Date of Patent: October 11, 2011Assignee: Teijin LimitedInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
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Patent number: 8017722Abstract: A process for production of a plant-derived component-containing polycarbonate represented by the following formula (3): (wherein R1-R4 each independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl, and n is the number of repeating units), by melt polycondensation using as the starting materials a specified diol, having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography, and a specified carbonic acid diester, having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography.Type: GrantFiled: May 14, 2008Date of Patent: September 13, 2011Assignee: Teijin LimitedInventors: Akimichi Oda, Eiichi Kitazono, Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito
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Patent number: 8008381Abstract: An object of the present invention is to provide a polycarbonate resin composition which has a high content of biogenic matter and is excellent in heat resistance, heat stability, moldability, hue and transparency. The present invention relates to a resin composition including 0.0005 to 0.Type: GrantFiled: April 23, 2008Date of Patent: August 30, 2011Assignee: Teijin LimitedInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka, Eiichi Kitazono, Akimichi Oda
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Publication number: 20100184884Abstract: There is provided a resin composition that comprises a polycarbonate resin derived from an ether diol such as isosorbide and that is excellent in flame retardancy, heat resistance, thermal stability, rigidity, transparency and moldability. The resin composition is a flame-retardant resin composition comprising 1 to 60 parts by weight of phosphorus compound (component B) having a thermal decomposition temperature of not higher than 340° C. based on 100 parts by weight of polycarbonate resin (component A) that mainly comprises a recurring unit represented by the following formula (1).Type: ApplicationFiled: May 28, 2008Publication date: July 22, 2010Applicant: TEIJIN LIMITEDInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
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Publication number: 20100160601Abstract: A process for production of a plant-derived component-containing polycarbonate represented by the following formula (3): (wherein R1-R4 each independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl, and n is the number of repeating units), by melt polycondensation using as the starting materials a diol represented by the following formula (1), having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography: (wherein R1-R4 each independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl), and a carbonic acid diester represented by the following formula (2), having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography: (wherein R5 and R6 are groups selected from among alkyl, cycloalkyl and aryl, and R5 and R6 may be the same or different groups).Type: ApplicationFiled: May 14, 2008Publication date: June 24, 2010Inventors: Akimichi Oda, Eiichi Kitazono, Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito
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Publication number: 20100160563Abstract: A resin composition comprising a polycarbonate resin derived from an ether diol residue such as isosorbide and has excellent impact resistance, heat resistance, heat stability and moldability. The resin composition comprises a rubber polymer (component B) in an amount of 1 to 30 parts by weight based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent and has a glass transition temperature (Tg) of 145 to 165° C. and a 5% weight loss temperature (Td) of 320 to 400° C.Type: ApplicationFiled: May 16, 2008Publication date: June 24, 2010Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
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Publication number: 20100105854Abstract: A terminal modified polycarbonate having a high content of biogenic matter, excellent heat resistance, heat stability, moldability and moist absorption resistance and high surface energy and a manufacturing process thereof. The terminal modified polycarbonate has a main chain essentially composed of a recurring unit represented by the following formula (1): has a specific viscosity at 20° C. of a solution obtained by dissolving 0.7 g of the polycarbonate in 100 ml of methylene chloride of 0.2 to 0.5, and contains a terminal group represented by the following formula (2) or (3) in an amount of 0.Type: ApplicationFiled: March 5, 2008Publication date: April 29, 2010Applicant: TEIJIN LIMITEDInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
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Publication number: 20100076130Abstract: An object of the present invention is to provide a polycarbonate resin composition which has a high content of biogenic matter and is excellent in heat resistance, heat stability, moldability, hue and transparency. The present invention related to a resin composition comprising 0.0005 to 0.5 part by weight of at least one heat stabilizer (component S) selected from the group consisting of phosphorus-based heat stabilizers (PS) and hindered phenol-based heat stabilizers (HS) based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent, and a molded article thereof.Type: ApplicationFiled: April 23, 2008Publication date: March 25, 2010Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka, Eiichi Kitazono, Akimichi Oda
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Publication number: 20100048854Abstract: A polycarbonate resin which shows a high content of biogenic matter and has excellent heat resistance, heat stability and moldability, and a manufacturing process thereof. The polycarbonate resin contains a recurring unit represent by the following formula (1) as the major constituent, and has (i) a specific viscosity of a solution prepared by dissolving 0.7 g of the resin in 100 ml of methylene chloride at 20° C. of 0.20 to 0.45, (ii) a glass transition temperature (Tg) of 150 to 200° C., and (iii) a 5% weight loss temperature (Td) of 330 to 400° C.Type: ApplicationFiled: January 29, 2008Publication date: February 25, 2010Applicant: TEIJIN LIMITEDInventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Eiichi Kitazono, Akimichi Oda
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Patent number: 5929104Abstract: Disclosed herein are a method for inducing apoptosis of cancer cells, which comprises administering an effective amount of a 2-nitroimidazole derivative represented by the general formula (1): ##STR1## wherein R represents an alkyl, alkenyl or alkynyl group substituted by 1 to 3 hydroxyl groups, and a method for treating a cancer, which comprises using the method for inducing apoptosis in combination with another means for killing cancer cells.Type: GrantFiled: April 2, 1997Date of Patent: July 27, 1999Assignee: Pola Chemical Industries, Inc.Inventors: Harumi Ohyama, Takeshi Yamada, Yoshiya Furusawa, Atsuko Kamohara, Mizuho Saito