Patents by Inventor Shoichiro Nakamura
Shoichiro Nakamura 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: 12060481Abstract: A flame retardant resin composition includes a polyolefin resin, a phosphate compound, and an organic phosphorus compound. The phosphate compound includes a salt of a phosphoric acid represented by the following formula: where m represents an integer of 1 to 100, and an amine compound containing an amino group in a molecule, and the organic phosphoric compound (C) is represented by the following formula: where X1 and X2 are the same or different, and are represented by the following formula: ALAr)n??(3), where AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar is a phenyl group, a naphthyl group or an anthryl group which may include a substituted group, and bonds with an optional carbon atom in the AL, and n indicates an integer of 1 to 3.Type: GrantFiled: October 16, 2018Date of Patent: August 13, 2024Assignee: Fujikura Ltd.Inventors: Masayuki Iwata, Seiichi Taira, Tomonori Kondo, Shoichiro Nakamura
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Publication number: 20220025156Abstract: A flame-retardant resin composition includes a base resin (A) containing a polyolefin resin and a flame retardant. The flame retardant includes an organic phosphorus compound (B) and a hindered amine compound (C). The organic phosphorus compound (B) is represented by formula (1): where X1 and X2 each represent a hydrocarbon group, with or without a substituent, and may be the same or different. The hindered amine compound (C) includes a group represented by formula (2): wherein R1 to R4 each independently represent an alkyl group having 1 to 8 carbon atoms, and R5 represents an alkyl group having 1 to 50 carbon atoms, a cycloalkyl group having 5 to 12 carbon atoms, an aralkyl group having 7 to 25 carbon atoms, or an aryl group having 6 to 12 carbon atoms.Type: ApplicationFiled: December 14, 2019Publication date: January 27, 2022Applicant: Fujikura Ltd.Inventors: Masayuki Iwata, Shoichiro Nakamura
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Patent number: 11028257Abstract: A flame-retardant resin composition may include a base resin composed of polyethylene and an acid-modified polyolefin, a silicone compound, a fatty acid-containing compound, and a hindered amine-based compound that includes a hindered amine structure. The polyethylene may include a high-density polyethylene, a medium-density polyethylene and a low-density polyethylene, where the high-density polyethylene has a density of 945 kg/m3 or more, the medium-density polyethylene has a density of 914 kg/m3 or more and less than 945 kg/m3, and the low-density polyethylene has a density of 864 kg/m3 or more and less than 914 kg/m3. The base resin may contain the high-density polyethylene in an amount of 40 mass % or more and 60 mass % or less, the medium-density polyethylene in an amount of 1 mass % or more and 35 mass % or less, and the low-density polyethylene in an amount of 10 mass % or more and 30 mass % or less.Type: GrantFiled: October 3, 2017Date of Patent: June 8, 2021Assignee: Fujikura Ltd.Inventors: Yusuke Yamaki, Shoichiro Nakamura
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Publication number: 20210122912Abstract: A flame retardant resin composition includes a polyolefin resin, a phosphate compound, and an organic phosphorus compound. The phosphate compound includes a salt of a phosphoric acid represented by the following formula: where m represents an integer of 1 to 100, and an amine compound containing an amino group in a molecule, and the organic phosphoric compound (C) is represented by the following formula: where X1 and X2 are the same or different, and are represented by the following formula: ALArn??(3), where AL is a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar is a phenyl group, a naphthyl group or an anthryl group which may include a substituted group, and bonds with an optional carbon atom in the AL, and n indicates an integer of 1 to 3.Type: ApplicationFiled: October 16, 2018Publication date: April 29, 2021Applicant: Fujikura Ltd.Inventors: Masayuki Iwata, Seiichi Taira, Tomonori Kondo, Shoichiro Nakamura
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Publication number: 20210061985Abstract: Provided is a flame retardant resin composition that includes a base resin, a filler blended in a ratio of 5 parts by mass or more relative to 100 parts by mass of the base resin, a silicone compound blended in a ratio of 0.5 part by mass or more relative to 100 parts by mass of the base resin, and a fatty acid-containing compound blended in a ratio of 3 parts by mass or more relative to 100 parts by mass of the base resin. The filler may have a silane coupling agent having a polar group adhered to at least a part of a surface of a silicate compound. Further provided are an insulated wire, a cable, and an optical fiber cable that includes in part the flame retardant resin composition.Type: ApplicationFiled: March 14, 2019Publication date: March 4, 2021Applicant: Fujikura Ltd.Inventors: Masayuki Iwata, Yusuke Yamaki, Shoichiro Nakamura
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Patent number: 10669411Abstract: A flame-retardant resin composition containing a base resin composed of polyethylene and an acid-modified polyolefin, aluminum hydroxide, a silicone compound, and a fatty acid-containing compound. The flame-retardant resin composition may contain polyethylene with a density of 912.4 kg/m3 or less. The base resin may contain an amount of polyethylene of the range 80 to 99% by mass, the amount of the acid-modified polyolefin in the base resin is of the range 1 to 20% by mass. To 100 parts by mass of the base resin, the aluminum hydroxide may be added in an amount of the range 5 to 190 parts by mass, the silicone compound may be added in an amount of the range 1.5 to 10 parts by mass, and the fatty acid-containing compound may be added in an amount of the range 5 to 20 parts by mass.Type: GrantFiled: November 22, 2016Date of Patent: June 2, 2020Assignee: Fujikura Ltd.Inventors: Seiichi Taira, Haruka Kohri, Shoichiro Nakamura
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Patent number: 10640634Abstract: A flame retardant resin composition containing a polyolefin resin, a silicone compound, a fatty acid containing compound, aluminum hydroxide, and a triazine ring containing hindered amine compound. With respect to 100 parts by mass of the polyolefin resin, the silicone compound is blended in an amount of the range 0.5 to 10 parts by mass, the fatty acid containing compound is blended in an amount of the range 0.5 to 20 parts by mass, the aluminum hydroxide is blended in an amount of the range 1 to 60 parts by mass, and the triazine ring containing hindered amine compound is blended in an amount of the range 0.05 to 8 parts by mass or less. The triazine ring containing hindered amine compound may include an oxygen atom.Type: GrantFiled: December 5, 2016Date of Patent: May 5, 2020Assignee: Fujikura Ltd.Inventors: Haruka Kohri, Shoichiro Nakamura, Tomohisa Watanabe
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Publication number: 20200062937Abstract: A flame-retardant resin composition may include a base resin composed of polyethylene and an acid-modified polyolefin, a silicone compound, a fatty acid-containing compound, and a hindered amine-based compound that includes a hindered amine structure. The polyethylene may include a high-density polyethylene, a medium-density polyethylene and a low-density polyethylene, where the high-density polyethylene has a density of 945 kg/m3 or more, the medium-density polyethylene has a density of 914 kg/m3 or more and less than 945 kg/m3, and the low-density polyethylene has a density of 864 kg/m3 or more and less than 914 kg/m3. The base resin may contain the high-density polyethylene in an amount of 40 mass % or more and 60 mass % or less, the medium-density polyethylene in an amount of 1 mass % or more and 35 mass % or less, and the low-density polyethylene in an amount of 10 mass % or more and 30 mass % or less.Type: ApplicationFiled: October 3, 2017Publication date: February 27, 2020Applicant: FUJIKURA LTD.Inventors: Yusuke Yamaki, Shoichiro Nakamura
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Patent number: 10483017Abstract: A flame retardant resin composition including a base resin including 18 to 85% by mass of a high density polyethylene, 9 to 69% by mass of a low density polyethylene, and 3 to 25% by mass of an acid-modified polyolefin compound, and 25 parts by mass to 110 parts by mass of calcium carbonate particles, more than 1 part by mass to 10 parts by mass of a silicone-based compound, and 2 parts by mass to 20 parts by mass of a fatty acid-containing compound, each on the basis of 100 parts by mass of the base resin.Type: GrantFiled: August 25, 2015Date of Patent: November 19, 2019Assignee: Fujikura Ltd.Inventors: Nao Nishida, Seiichi Taira, Shoichiro Nakamura
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Patent number: 10253262Abstract: A flame retardant resin composition comprises a polyolefin resin, calcium carbonate particles blended at a ratio of 5 pts. mass to 80 pts. mass, aluminum hydroxide blended at a ratio of 50 pts. mass to 125 pts. mass, a silicone-based compound blended at a ratio of more than 1 pt. mass and 10 pts. mass or less, a fatty acid-containing compound blended at a ratio of 3 pts. mass to 20 pts. mass, and a zinc-containing inorganic compound blended at a ratio of 1 pt. mass to 7 pts. mass, all relative to 100 pts. mass of the polyolefin resin. In the flame retardant resin composition, the calcium carbonate particles and the aluminum hydroxide are blended in total at a ratio of 55 pts. mass to 130 pts. mass relative to 100 pts. mass of the polyolefin resin.Type: GrantFiled: November 20, 2015Date of Patent: April 9, 2019Assignee: FUJIKURA LTD.Inventors: Haruka Kohri, Shoichiro Nakamura, Tomohisa Watanabe
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Publication number: 20180371220Abstract: A flame retardant resin composition containing a polyolefin resin, a silicone compound, a fatty acid containing compound, aluminum hydroxide, and a triazine ring containing hindered amine compound. With respect to 100 parts by mass of the polyolefin resin, the silicone compound is blended in an amount of the range 0.5 to 10 parts by mass, the fatty acid containing compound is blended in an amount of the range 0.5 to 20 parts by mass, the aluminum hydroxide is blended in an amount of the range 1 to 60 parts by mass, and the triazine ring containing hindered amine compound is blended in an amount of the range 0.05 to 8 parts by mass or less. The triazine ring containing hindered amine compound may include an oxygen atom.Type: ApplicationFiled: December 5, 2016Publication date: December 27, 2018Applicant: Fujikura Ltd.Inventors: Haruka KOHRI, Shoichiro NAKAMURA, Tomohisa WATANABE
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Publication number: 20180362744Abstract: A flame-retardant resin composition containing a base resin composed of polyethylene and an acid-modified polyolefin, aluminum hydroxide, a silicone compound, and a fatty acid-containing compound. The flame-retardant resin composition may contain polyethylene with a density of 912.4 kg/m3 or less. The base resin may contain an amount of polyethylene of the range 80 to 99% by mass, the amount of the acid-modified polyolefin in the base resin is of the range 1 to 20% by mass. To 100 parts by mass of the base resin, the aluminum hydroxide may be added in an amount of the range 5 to 190 parts by mass, the silicone compound may be added in an amount of the range 1.5 to 10 parts by mass, and the fatty acid-containing compound may be added in an amount of the range 5 to 20 parts by mass.Type: ApplicationFiled: November 22, 2016Publication date: December 20, 2018Applicant: FUJIKURA LTD.Inventors: Seiichi Taira, Haruka Kohri, Shoichiro Nakamura
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Publication number: 20180355157Abstract: A flame-retardant resin composition containing a base resin composed of polyethylene and an acid-modified polyolefin, calcium carbonate, aluminum hydroxide, a silicone compound, and a fatty acid-containing compound. The density of the polyethylene may be 912.4 kg/m3 or less, the amount of polyethylene in the base resin may be of the range 80 to 99% by mass, and the amount of acid-modified polyolefin in the base resin may be of the range 1 to 20% by mass. With respect to 100 parts by mass of the base resin, the calcium carbonate is blended at a proportion of the range 10 to 120 parts by mass, the aluminum hydroxide is blended at a proportion of the range 5 to 150 parts by mass, the silicone compound is blended at a proportion of the range 1.5 to 10 parts by mass, and the fatty acid-containing compound is blended at a proportion of the range 5 to 20 parts by mass.Type: ApplicationFiled: November 22, 2016Publication date: December 13, 2018Applicant: FUJIKURA LTD.Inventors: Seiichi Taira, Haruka Kohri, Shoichiro Nakamura
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Publication number: 20180166186Abstract: Disclosed is a flame retardant resin composition containing a polyolefin resin, a silicone compound, a fatty acid containing compound, calcium carbonate, and a triazine ring containing hindered amine compound. In this composition, relative to 100 parts by mass of the polyolefin resin, the silicone compound is blended at a ratio of 1.5 parts by mass or more and 10 parts by mass the fatty acid containing compound is blended at a ratio of 3 parts by mass or more and 20 parts by mass, the calcium carbonate is blended at a ratio of 10 parts by mass or more and less than 120 parts by mass, the triazine ring containing hindered amine compound is blended at a ratio of 0.05 part by mass or more and less than 10 parts by mass, and the triazine ring containing hindered amine compound includes an oxygen atom.Type: ApplicationFiled: June 23, 2016Publication date: June 14, 2018Applicant: FUJIKURA LTD.Inventors: Haruka Kohri, Shoichiro Nakamura, Tomohisa Watanabe
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Publication number: 20170335198Abstract: Disclosed is a flame retardant resin composition comprising a polyolefin resin, calcium carbonate particles blended at a ratio of 5 pts. mass to 80 pts. mass, aluminum hydroxide blended at a ratio of 50 pts. mass to 125 pts. mass, a silicone-based compound blended at a ratio of more than 1 pt. mass and 10 pts. mass or less, a fatty acid-containing compound blended at a ratio of 3 pts. mass to 20 pts. mass, and a zinc-containing inorganic compound blended at a ratio of 1 pt. mass to 7 pts. mass, all relative to 100 pts. mass of the polyolefin resin. In the flame retardant resin composition, the calcium carbonate particles and the aluminum hydroxide are blended in total at a ratio of 55 pts. mass to 130 pts. mass relative to 100 pts. mass of the polyolefin resin.Type: ApplicationFiled: November 20, 2015Publication date: November 23, 2017Applicant: FUJIKURA LTD.Inventors: Haruka Kohri, Shoichiro Nakamura, Tomohisa Watanabe
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Publication number: 20170271048Abstract: A flame retardant resin composition including a base resin including 18 to 85% by mass of a high density polyethylene, 9 to 69% by mass of a low density polyethylene, and 3 to 25% by mass of an acid-modified polyolefin compound, and 25 parts by mass to 110 parts by mass of calcium carbonate particles, more than 1 part by mass to 10 parts by mass of a silicone-based compound, and 2 parts by mass to 20 parts by mass of a fatty acid-containing compound, each on the basis of 100 parts by mass of the base resin.Type: ApplicationFiled: August 25, 2015Publication date: September 21, 2017Applicant: FUJIKURA LTD.Inventors: Nao NISHIDA, Seiichi TAIRA, Shoichiro NAKAMURA
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Patent number: 4650926Abstract: An electrographic system and method having a control which carries out correction for graphic surface non-linearities. The control employs a procedure wherein a correction look-up table is developed as part of the manufacture of the device wherein output readings are taken along a physical domain rectangular grid array of predetermined dimension and these output readings are adjusted in their signal domain to establish a regularly incremented sequence of address values within that signal domain. Physical domain coordinate values then are derived and placed in the table for each address value. The control then accesses this memory for each of a given locator or tracer position on the graphic surface and carries out an interpolative weighting to derive acceptably accurate coordinate pair signals which are outputted to a host computer or the like.Type: GrantFiled: June 7, 1985Date of Patent: March 17, 1987Assignee: Scriptel CorporationInventors: Shoichiro Nakamura, Robert G. Kable