Patents by Inventor Satoshi Sekimura
Satoshi Sekimura 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: 9193094Abstract: The present invention is related to a method for producing a resin composition including feeding a resin (A), a fibrous filler (B), and a particulate filler (C) which is harder than the fibrous filler (B) to an extruder, and melt-kneading to extrude a kneaded material, the resin composition comprising a fibrous filler (B) which is 140 ?m or less in weight average fiber length. According to the present invention, a production method with high versatility is provided in which a resin composition containing the fibrous filler having the weight average fiber length of 140 ?m or less is effectively produced.Type: GrantFiled: December 21, 2012Date of Patent: November 24, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Sekimura, Hiroshi Harada, Koichi Mizumoto
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Patent number: 9168675Abstract: A method for producing a resin composition using an extruder, the extruder having a cylinder and a screw disposed inside the cylinder, the cylinder being provided with a main feed port and further optionally provided with a side feed port disposed downstream in an extrusion direction from the main feed port, and the method comprising: supplying a resin (A) in the total amount to the extruder from the main feed port; supplying a fibrous filler (B), whose a weight average fiber length is 1 mm or more, in the total amount to the extruder from the main feed port, or, with the extruder being provided with the side feed port, supplying the fibrous filler (B) partly to the extruder from the main feed port and the remainder to the extruder from the side feed port; melt-kneading the supplied resin (A) and the fibrous filler (B); and extruding the melt-kneaded material.Type: GrantFiled: December 28, 2012Date of Patent: October 27, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Sekimura, Hiroshi Harada
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Patent number: 9138915Abstract: A method is provided for producing a resin composition in which the fiber length of the fibrous filler contained in the resin composition is controlled. The method includes a step of feeding a resin (A) and a fibrous filler (B) to an extruder, melt-kneading and then extruding them. The extruder includes a cylinder, a screw mounted in the cylinder, a main feed port provided in the cylinder, and a side feed port provided rearwards from the main feed port in the extrusion direction. Part of the resin (A) and part of a fibrous filler (B) having a weight-average fiber length of not less than 1 mm are fed through the main feed port and the rest of the resin (A) and the rest of the fibrous filler (B) having a weight-average fiber length of not less than 1 mm are fed through the side feed port.Type: GrantFiled: September 6, 2012Date of Patent: September 22, 2015Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Sekimura, Hiroshi Harada, Koichi Mizumoto
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Publication number: 20150011691Abstract: The present invention is related to a method for producing a resin composition including feeding a resin (A), a fibrous filler (B), and a particulate filler (C) which is harder than the fibrous filler (B) to an extruder, and melt-kneading to extrude a kneaded material, the resin composition comprising a fibrous filler (B) which is 140 ?m or less in weight average fiber length. According to the present invention, a production method with high versatility is provided in which a resin composition containing the fibrous filler having the weight average fiber length of 140 ?m or less is effectively produced.Type: ApplicationFiled: December 21, 2012Publication date: January 8, 2015Inventors: Satoshi Sekimura, Hiroshi Harada, Koichi Mizumoto
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Publication number: 20140371389Abstract: A method for producing a resin composition using an extruder, the extruder having a cylinder and a screw disposed inside the cylinder, the cylinder being provided with a main feed port and further optionally provided with a side feed port disposed downstream in an extrusion direction from the main feed port, and the method comprising: supplying a resin (A) in the total amount to the extruder from the main feed port; supplying a fibrous filler (B), whose a weight average fiber length is 1 mm or more, in the total amount to the extruder from the main feed port, or, with the extruder being provided with the side feed port, supplying the fibrous filler (B) partly to the extruder from the main feed port and the remainder to the extruder from the side feed port; melt-kneading the supplied resin (A) and the fibrous filler (B); and extruding the melt-kneaded material.Type: ApplicationFiled: December 28, 2012Publication date: December 18, 2014Inventors: Satoshi Sekimura, Hiroshi Harada
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Patent number: 8641924Abstract: An object is to provide a liquid crystal polyester resin composition capable of producing a molding in which the generation amount of particles is sufficiently reduced. The present invention provides a liquid crystal polyester resin composition including (1) a liquid crystal polyester, and (2) a fiber-shaped filler having a fiber diameter of 5 to 15 ?m and a number average fiber length of 30 to 200 ?m, wherein the content of a fiber having a fiber length of more than 200 ?m is 10% by mass or less based on 100% by mass of the amount of the fiber-shaped filler.Type: GrantFiled: March 2, 2012Date of Patent: February 4, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Sekimura, Hirokazu Matsui, Hiroshi Harada
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Publication number: 20130079454Abstract: A method is provided for producing a resin composition in which the fiber length of the fibrous filler contained in the resin composition is controlled. The method includes a step of feeding a resin (A) and a fibrous filler (B) to an extruder, melt-kneading and then extruding them. The extruder includes a cylinder, a screw mounted in the cylinder, a main feed port provided in the cylinder, and a side feed port provided rearwards from the main feed port in the extrusion direction. Part of the resin (A) and part of a fibrous filler (B) having a weight-average fiber length of not less than 1 mm are fed through the main feed port and the rest of the resin (A) and the rest of the fibrous filler (B) having a weight-average fiber length of not less than 1 mm are fed through the side feed port.Type: ApplicationFiled: September 6, 2012Publication date: March 28, 2013Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Satoshi SEKIMURA, Hiroshi HARADA, Koichi MIZUMOTO
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Publication number: 20120251769Abstract: Provided is a liquid crystal polymer molding including an opening portion in which a weld portion has high strength and also surface properties are satisfactory. A liquid crystal polymer molding including an opening portion obtained by subjecting a liquid crystal polymer composition containing a spherical filler to injection molding, wherein the liquid crystal polymer molding includes a weld portion, formed by injection molding, which extends toward the outside from the opening portion, and the weld portion has a thickness in the opening portion of 2.5 mm or less, and also has a length, along a surface of the molding, of at least two times the thickness.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Hiroshi HARADA, Satoshi SEKIMURA
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Publication number: 20120252955Abstract: Provided is a liquid crystal polymer molding in which a weld portion has high strength and also surface properties are satisfactory. A method for producing a liquid crystal polymer molding including a weld portion by injection-molding a liquid crystal polymer composition containing a spherical filler, wherein the spherical filler has a center particle diameter of 60 ?m or less, the method including molding so as to satisfy a relation: 20?[thickness of the weld portion/center particle diameter of the spherical filler]?55; and a liquid crystal polymer molding obtained by such a method.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Satoshi SEKIMURA, Hiroshi HARADA
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Publication number: 20120235092Abstract: An object is to provide a liquid crystal polyester resin composition capable of producing a molding in which the generation amount of particles is sufficiently reduced. The present invention provides a liquid crystal polyester resin composition including (1) a liquid crystal polyester, and (2) a fiber-shaped filler having a fiber diameter of 5 to 15 ?m and a number average fiber length of 30 to 200 ?m, wherein the content of a fiber having a fiber length of more than 200 ?m is 10% by mass or less based on 100% by mass of the amount of the fiber-shaped filler.Type: ApplicationFiled: March 2, 2012Publication date: September 20, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Satoshi SEKIMURA, Hirokazu MATSUI, Hiroshi HARADA
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Patent number: 8262933Abstract: The present invention provides a thermoplastic resin composition comprising a thermoplastic resin and aggregated particles of fibrous crystals. According to the thermoplastic resin composition, a molded articles which adequately reduce a defect in appearance can be obtained.Type: GrantFiled: February 17, 2010Date of Patent: September 11, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Satoshi Sekimura, Hiroshi Harada
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Publication number: 20100207064Abstract: The present invention provides a thermoplastic resin composition comprising a thermoplastic resin and aggregated particles of fibrous crystals. According to the thermoplastic resin composition, a molded articles which adequately reduce a defect in appearance can be obtained.Type: ApplicationFiled: February 17, 2010Publication date: August 19, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Satoshi SEKIMURA, Hiroshi HARADA