Patents by Inventor Hirokazu Ohshiba
Hirokazu Ohshiba 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: 8272879Abstract: The present invention provides a planar connector having excellent performances including flatness, warp-deformation resistance, and heat resistance, being capable of responding to shape changes in recent planar connectors. Specifically, the planar connector is composed of a composite resin composition comprises (A) a liquid crystalline polymer containing 55% by mole or less of p-hydroxy benzoic acid residue and having a melting point of 330° C. or higher, (B) a plate-like inorganic filler, and (C) a fibrous filler having a weight average fiber length within a range of 250 to 600 ?m, the amount of (B) component being 25 to 35% by weight to the total composition, the amount of (C) component being 10 to 25% by weight to the total composition, the sum in total of (B) component and (C) component being 40 to 50% by weight to the total composition, wherein the connector has a lattice structure inside an outer frame, and has an opening inside the lattice area, and wherein the pitch interval of the lattice area is 1.Type: GrantFiled: May 19, 2009Date of Patent: September 25, 2012Assignee: Polyplastics Co., Ltd.Inventors: Hiroki Fukatsu, Raita Nishikawa, Hirokazu Ohshiba, Seiji Kayukawa, Kazufumi Watanabe
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Patent number: 8123978Abstract: The present invention provides a liquid crystalline polyester resin composition which imparts a good mold-releasability during molding and further is improved in heat resistance. Specifically, with 100 parts by weight of a liquid crystalline polyester resin is added 0.001 to 1 part by weight of a fatty acid ester which is a tetraester of pentaerythritol and a C10 to C32 higher fatty acid and has an acid value ranging from 0.01 to 0.5 and a hydroxyl value ranging from 0.01 to 5.Type: GrantFiled: October 28, 2008Date of Patent: February 28, 2012Assignee: Polyplastics Co., Ltd.Inventors: Kazufumi Watanabe, Hirokazu Ohshiba, Raita Nishikawa, Kenichi Yasusaka
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Patent number: 7980897Abstract: Provided is a material capable of forming a molded product which has good mechanical properties with low warpage while being excellent in any of the performance including heat resistance and flowability, even if the molded product is an asymmetric electronic parts. Specifically, the asymmetric electronic parts is prepared by molding a liquid crystalline polymer composition comprising (A) a fibrous filler having an average fiber diameter within the range of 5 to 30 ?m, having a weight average fiber length within the range of 250 to 350 ?m, excluding 10 ?m or shorter fiber length, and having a content of a fibrous filler being 700 ?m or longer within the range of 5% by weight or less; and (B) a plate-like filler having an average particle size within the range of 0.Type: GrantFiled: August 23, 2007Date of Patent: July 19, 2011Assignee: Polyplastics Co., Ltd.Inventors: Hiroki Fukatsu, Seiji Kayukawa, Hirokazu Ohshiba, Raita Nishikawa
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Publication number: 20110086968Abstract: The present invention provides a planar connector having excellent performances including flatness, warp-deformation resistance, and heat resistance, being capable of responding to shape changes in recent planar connectors. Specifically, the planar connector is composed of a composite resin composition comprises (A) a liquid crystalline polymer containing 55% by mole or less of p-hydroxy benzoic acid residue and having a melting point of 330° C. or higher, (B) a plate-like inorganic filler, and (C) a fibrous filler having a weight average fiber length within a range of 250 to 600 ?m, the amount of (B) component being 25 to 35% by weight to the total composition, the amount of (C) component being 10 to 25% by weight to the total composition, the sum in total of (B) component and (C) component being 40 to 50% by weight to the total composition, wherein the connector has a lattice structure inside an outer frame, and has an opening inside the lattice area, and wherein the pitch interval of the lattice area is 1.Type: ApplicationFiled: May 19, 2009Publication date: April 14, 2011Inventors: Hiroki Fukatsu, Raita Nishikawa, Hirokazu Ohshiba, Seiji Kayukawa, Kazufumi Watanabe
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Publication number: 20100237284Abstract: The present invention provides a liquid crystalline polyester resin composition which imparts a good mold-releasability during molding and further is improved in heat resistance. Specifically, with 100 parts by weight of a liquid crystalline polyester resin is added 0.001 to 1 part by weight of a fatty acid ester which is a tetraester of pentaerythritol and a C10 to C32 higher fatty acid and has an acid value ranging from 0.01 to 0.5 and a hydroxyl value ranging from 0.01 to 5.Type: ApplicationFiled: October 28, 2008Publication date: September 23, 2010Applicant: Polyplastics Co., Ltd.Inventors: Kazufumi Watanabe, Hirokazu Ohshiba, Raita Nishikawa, Kenichi Yasusaka
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Patent number: 7789670Abstract: The present invention provides a very thin planar connector having 2 mm or smaller pitch interval at the lattice area and 0.5 mm or smaller thickness of the lattice area, giving excellent performance in the whole performances such as moldability, flatness, warp-deformation, and heat resistance. A planar connector having a lattice structure within an outer frame is molded by using (C) a resin composition prepared by compounding (A) a liquid-crystalline polymer with (B) a fibrous filler, while the relation between the compounding quantity and the weight-average length of (B) the fibrous filler is controlled to a specified range.Type: GrantFiled: March 24, 2005Date of Patent: September 7, 2010Assignee: Polyplastics Co., Ltd.Inventors: Hiroki Fukatsu, Kazufumi Watanabe, Toshio Shiwaku, Hirokazu Ohshiba
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Publication number: 20090197471Abstract: Provided is a material capable of forming a molded product which has good mechanical properties with low warpage while being excellent in any of the performance including heat resistance and flowability, even if the molded product is an asymmetric electronic parts. Specifically, the asymmetric electronic parts is prepared by molding a liquid crystalline polymer composition comprising (A) a fibrous filler having an average fiber diameter within the range of 5 to 30 ?m, having a weight average fiber length within the range of 250 to 350 ?m, excluding 10 ?m or shorter fiber length, and having a content of a fibrous filler being 700 ?m or longer within the range of 5% by weight or less; and (B) a plate-like filler having an average particle size within the range of 0.Type: ApplicationFiled: August 23, 2007Publication date: August 6, 2009Applicant: Polyplastics Co., Ltd.Inventors: Hiroki Fukatsu, Seiji Kayukawa, Hirokazu Ohshiba, Raita Nishikawa
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Publication number: 20070197706Abstract: The present invention provides a very thin planar connector having 2 mm or smaller pitch interval at the lattice area and 0.5 mm or smaller thickness of the lattice area, giving excellent performance in the whole performances such as moldability, flatness, warp-deformation, and heat resistance. A planar connector having a lattice structure within an outer frame is molded by using (C) a resin composition prepared by compounding (A) a liquid-crystalline polymer with (B) a fibrous filler, while the relation between the compounding quantity and the weight-average length of (B) the fibrous filler is controlled to a specified range.Type: ApplicationFiled: March 24, 2005Publication date: August 23, 2007Inventors: Hiroki Fukatsu, Kazufumi Watanabe, Toshio Shiwaku, Hirokazu Ohshiba
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Patent number: 6797198Abstract: This invention offers a liquid crystal polymer which exhibits an excellent low warp and is advantageously used especially as a connector or the like. That is, a liquid crystal polymer composition in which a plate-shaped filler (B) in an amount of 5-100 parts by weight satisfying the following formulae (1) and (2) and having an average particle diameter of 0.5-100 &mgr;m is compounded with 100 parts by weight of a liquid crystal polymer (A). D/W≦5 (1) 3≦W/H≦200 (2) wherein D is the maximum particle diameter of the plate-shaped filler (B), and the direction of the diameter D is defined as “x”; W is a particle's diameter which is in the direction y at the right angle to the direction x; and H is a thickness of the particle in the direction of z which is vertical to the xy-plane.Type: GrantFiled: March 27, 2002Date of Patent: September 28, 2004Assignee: Polyplastics Co., Ltd.Inventors: Takayuki Miyashita, Mineo Ohtake, Hirokazu Ohshiba