Patents by Inventor Kouichi Nakayama
Kouichi Nakayama 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: 11526975Abstract: According to one embodiment, a method for displaying an index value in generation of a mask pattern verification model includes: calculating a first index value using a plurality of images; estimating a model on the basis of the first index value and pattern information; calculating a second index value using the model; and displaying at least one of the first index value and the second index value.Type: GrantFiled: September 4, 2019Date of Patent: December 13, 2022Assignee: KIOXIA CORPORATIONInventors: Yuki Watanabe, Taiki Kimura, Kazufumi Shiozawa, Kouichi Nakayama
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Publication number: 20200118261Abstract: According to one embodiment, a method for displaying an index value in generation of a mask pattern verification model includes: calculating a first index value using a plurality of images; estimating a model on the basis of the first index value and pattern information; calculating a second index value using the model; and displaying at least one of the first index value and the second index value.Type: ApplicationFiled: September 4, 2019Publication date: April 16, 2020Applicant: TOSHIBA MEMORY CORPORATIONInventors: Yuki WATANABE, Taiki KIMURA, Kazufumi SHIOZAWA, Kouichi NAKAYAMA
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Patent number: 10151972Abstract: A manufacturing method of a photomask according to the embodiment sets an exposure condition applied when a resist is formed into a three-dimensional target shape by using a photomask including a plurality of light-shielding areas. Subsequently, the method sets a hypothetical target shape obtained by correcting a target shape based on a development characteristic of the resist for the exposure condition. Subsequently, the method creates a pattern of the photomask corresponding to the hypothetical target shape. Subsequently, the method simulates a prediction shape of the resist when the pattern is used. Subsequently, the method calculates a cost function related to an error between the prediction shape and the hypothetical target shape. Subsequently, the method adjusts the pattern based on a result of the calculation of the cost function.Type: GrantFiled: March 1, 2017Date of Patent: December 11, 2018Assignee: TOSHIBA MEMORY CORPORATIONInventors: Takaki Hashimoto, Satoshi Usui, Naoki Sato, Kouichi Nakayama, Masahiro Miyairi, Syogo Okamoto
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Publication number: 20180157167Abstract: A manufacturing method of a photomask according to the embodiment sets an exposure condition applied when a resist is formed into a three-dimensional target shape by using a photomask including a plurality of light-shielding areas. Subsequently, the method sets a hypothetical target shape obtained by correcting a target shape based on a development characteristic of the resist for the exposure condition. Subsequently, the method creates a pattern of the photomask corresponding to the hypothetical target shape. Subsequently, the method simulates a prediction shape of the resist when the pattern is used. Subsequently, the method calculates a cost function related to an error between the prediction shape and the hypothetical target shape. Subsequently, the method adjusts the pattern based on a result of the calculation of the cost function.Type: ApplicationFiled: March 1, 2017Publication date: June 7, 2018Applicant: TOSHIBA MEMORY CORPORATIONInventors: Takaki HASHIMOTO, Satoshi Usui, Naoki Sato, Kouichi Nakayama, Masahiro Miyairi, Syogo Okamoto
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Patent number: 9920196Abstract: An object of the present invention is to prevent an occurrence of flow-mark molding defects to improve an appearance of molded articles, and as a means for achieving the object, a propylene-based block copolymer is used as an appearance improver, the copolymer comprising 80 to 60% by weight of crystalline propylene polymer portion which has an intrinsic viscosity [?]p of 0.90 dL/g or less and 20 to 40% by weight of propylene/ethylene random copolymer portion which has an ethylene content of 35 to 50% by weight and an intrinsic viscosity [?]c of 7.0 dL/g or higher ([?]c/[?]p being 7.5 to 30), in which the propylene-based block copolymer has a MFR of 10 to 50 g/10 min.Type: GrantFiled: June 19, 2014Date of Patent: March 20, 2018Assignee: JAPAN POLYPROPYLENE CORPORATIONInventors: Tomohiro Hosoi, Shigeo Mizukami, Masahiro Nagata, Kouichi Nakayama, Yuji Ryosho
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Patent number: 9884958Abstract: An object of the present invention is to prevent an occurrence of flow-mark molding defects to improve an appearance of molded articles, and as a means for achieving the object, a propylene-based block copolymer is used as an appearance improver, the copolymer comprising 80 to 60% by weight of crystalline propylene polymer portion which has an intrinsic viscosity [?]p of 0.90 dL/g or less and 20 to 40% by weight of propylene/ethylene random copolymer portion which has an ethylene content of 35 to 50% by weight and an intrinsic viscosity [?]c of 7.0 dL/g or higher ([?]c/[?]p being 7.5 to 30), in which the propylene-based block copolymer has a MFR of 10 to 50 g/10 min.Type: GrantFiled: June 19, 2014Date of Patent: February 6, 2018Assignee: JAPAN POLYPROPYLENE CORPORATIONInventors: Tomohiro Hosoi, Shigeo Mizukami, Masahiro Nagata, Kouichi Nakayama, Yuji Ryosho
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Patent number: 9490564Abstract: A bevel portion extends from a front end of a plate-like electrical contact of the terminals to a lengthwise intermediate portion of the electrical contact, the bevel portion residing at an intersection of a width surface of the electrical contact with a thickness surface of the electrical contact. A step portion resides at an end of the bevel portion at the lengthwise intermediate portion of the electrical contact, the thickness surface extending in the thickness direction having one portion with reduced width defined by the bevel portion in the thickness direction. The other portion of the thickness surface continuing to an end of the step portion has an increased width in the thickness direction to define a press-fit portion. The electrical contact is inserted in a hole of a housing to the extent defined by the step portion and thereby provisionally locked with the press-fit portion press-fitted in the hole.Type: GrantFiled: March 21, 2012Date of Patent: November 8, 2016Assignee: Yazaki CorporationInventors: Kouichi Nakayama, Tsuyoshi Mizushima
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Patent number: 9356398Abstract: A shield connector is for assembling of a connector housing and a shield shell acted by a small insertion force and locking the connector housing and the shield shell by a large holding force. A flexible lock arm having a projection projecting outwardly is arranged at an insulation connector housing. A locked member engaged with the projection is arranged at a shield shell in which the connector housing is inserted. When the projection is half locked with the locked member, the lock arm is prevented from bending to unlock. When the connector housing is inserted into the shield shell, the lock arm is bent and also the projection is press-fitted along an inner surface of the shield shell. A stopper facing and abutting on an inner surface along a bending direction of the lock arm is arranged at an outer surface of the connector housing.Type: GrantFiled: February 13, 2012Date of Patent: May 31, 2016Assignee: Yazaki CorporationInventors: Kouichi Nakayama, Tsuyoshi Mizushima
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Publication number: 20160137831Abstract: An object of the present invention is to prevent an occurrence of flow-mark molding defects to improve an appearance of molded articles, and as a means for achieving the object, a propylene-based block copolymer is used as an appearance improver, the copolymer comprising 80 to 60% by weight of crystalline propylene polymer portion which has an intrinsic viscosity [?]p of 0.90 dL/g or less and 20 to 40% by weight of propylene/ethylene random copolymer portion which has an ethylene content of 35 to 50% by weight and an intrinsic viscosity [?]c of 7.0 dL/g or higher ([?]c/[?]p being 7.5 to 30), in which the propylene-based block copolymer has a MFR of 10 to 50 g/10 min.Type: ApplicationFiled: June 19, 2014Publication date: May 19, 2016Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Tomohiro HOSOI, Shigeo MIZUKAMI, Masahiro NAGATA, Kouichi NAKAYAMA, Yuji RYOSHO
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Patent number: 9059534Abstract: There is provided a shield connector that allows reliable prevention of a rubber plug from being detached from a housing. A shield connector has a terminal fitting connected to an end of an electrical wire, a housing accommodating the terminal fitting, a shield shell covering the housing, and a rubber plug attached to an outer circumference of the electrical wire for waterproofing of the inner space of the housing. The shield shell includes an electrical-wire insertion hole through which the electrical wire is passed. The rubber plug includes a packing and a resin member made in one piece with the packing. The resin member includes a cylindrical body and a flange portion protruding from an outer circumferential surface of the cylindrical body. An end of the cylindrical body is in the electrical-wire insertion hole, and the flange portion is sandwiched by the housing and the electrical-wire insertion hole.Type: GrantFiled: March 21, 2012Date of Patent: June 16, 2015Assignee: Yazaki CorporationInventors: Takuya Endo, Kouichi Nakayama, Tsuyoshi Mizushima
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Patent number: 8672700Abstract: The present invention provides a connector assembly allowing attachment of a connector to a connector receptacle with a limited attachment space. The connector assembly includes the connector having a terminal and a connector housing, the connector receptacle having a case and a terminal portion, and a fastening member. The terminal has an electrical contact portion with a hole. The connector housing has a column portion for receiving the electrical contact portion with the hole aligned in an insertion direction of the connector. The terminal portion has a connection portion to be superposed with the electrical contact portion and has a second hole to be communicated with the hole. The case has a housing portion for supporting the connection portion so that the second hole of the connection portion is aligned with the insertion direction of the connector.Type: GrantFiled: November 30, 2010Date of Patent: March 18, 2014Assignee: Yazaki CorporationInventors: Mitsuhiro Matsumoto, Hajime Kato, Kouichi Nakayama, Tsuyoshi Mizushima
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Patent number: 8672706Abstract: The present invention provides a connector assembly having a small size and preventing a contact between a bolt fastener and a detection member. The connector assembly includes a connector having an inner chamber with an opening and a plurality of connector terminals, a connector receptacle having a plurality of connector receptacle terminals securable together with the connector terminals and a first detection member, and a cover for covering the opening and having a second detection member. When the opening of the inner chamber is covered with the cover, the first detection member and the second detection member are connected together and detect that the cover is covered. The first detection member is disposed between the adjacent connector receptacle terminals. An end surface of the first housing is positioned inwardly of the inner chamber with respect to a surface of a connector electrical contact portion.Type: GrantFiled: October 28, 2010Date of Patent: March 18, 2014Assignee: Yazaki CorporationInventors: Mitsuhiro Matsumoto, Hajime Kato, Kouichi Nakayama, Tsuyoshi Mizushima
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Publication number: 20140011408Abstract: A bevel portion extends from a front end of a plate-like electrical contact of the terminals to a lengthwise intermediate portion of the electrical contact, the bevel portion residing at an intersection of a width surface of the electrical contact with a thickness surface of the electrical contact. A step portion resides at an end of the bevel portion at the lengthwise intermediate portion of the electrical contact, the thickness surface extending in the thickness direction having one portion with reduced width defined by the bevel portion in the thickness direction. The other portion of the thickness surface continuing to an end of the step portion has an increased width in the thickness direction to define a press-fit portion. The electrical contact is inserted in a hole of a housing to the extent defined by the step portion and thereby provisionally locked with the press-fit portion press-fitted in the hole.Type: ApplicationFiled: March 21, 2012Publication date: January 9, 2014Applicant: YAZAKI CORPORATIONInventors: Kouichi Nakayama, Tsuyoshi Mizushima
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Publication number: 20140011401Abstract: There is provided a shield connector that allows reliable prevention of a rubber plug from being detached from a housing. A shield connector has a terminal fitting connected to an end of an electrical wire, a housing accommodating the terminal fitting, a shield shell covering the housing, and a rubber plug attached to an outer circumference of the electrical wire for waterproofing of the inner space of the housing. The shield shell includes an electrical-wire insertion hole through which the electrical wire is passed. The rubber plug includes a packing and a resin member made in one piece with the packing. The resin member includes a cylindrical body and a flange portion protruding from an outer circumferential surface of the cylindrical body. An end of the cylindrical body is in the electrical-wire insertion hole, and the flange portion is sandwiched by the housing and the electrical-wire insertion hole.Type: ApplicationFiled: March 21, 2012Publication date: January 9, 2014Applicant: YAZAKI CORPORATIONInventors: Takuya Endo, Kouichi Nakayama, Tsuyoshi Mizushima
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Publication number: 20130316579Abstract: A shield connector is for assembling of a connector housing and a shield shell acted by a small insertion force and locking the connector housing and the shield shell by a large holding force. A flexible lock arm having a projection projecting outwardly is arranged at an insulation connector housing. A locked member engaged with the projection is arranged at a shield shell in which the connector housing is inserted. When the projection is half locked with the locked member, the lock arm is prevented from bending to unlock. When the connector housing is inserted into the shield shell, the lock arm is bent and also the projection is press-fitted along an inner surface of the shield shell. A stopper facing and abutting on an inner surface along a bending direction of the lock arm is arranged at an outer surface of the connector housing.Type: ApplicationFiled: February 13, 2012Publication date: November 28, 2013Applicant: Yazaki CorporationInventors: Kouichi Nakayama, Tsuyoshi Mizushima
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Publication number: 20130111416Abstract: According to one embodiment, a design data optimization method includes forming an angular aperture model, in first design data including a first and a second line patterns indicating an interconnect layout, based on an angular aperture between the first line pattern in which a conversion difference prediction point is set in a vertical direction and the second line pattern, and changing a distance between the first and second line patterns or a line width of the first and second line patterns in the first design data based on the angular aperture model and optimizing the first design data to second design data including the first and second line patterns changed.Type: ApplicationFiled: March 22, 2012Publication date: May 2, 2013Inventors: Shinichi NAKAGAWA, Chikaaki Kodama, Kouichi Nakayama, Toshiya Kotani, Fumiharu Nakajima
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Publication number: 20120238147Abstract: The present invention provides a connector assembly allowing attachment of a connector to a connector receptacle with a limited attachment space. The connector assembly includes the connector having a terminal and a connector housing, the connector receptacle having a case and a terminal portion, and a fastening member. The terminal has an electrical contact portion with a hole. The connector housing has a column portion for receiving the electrical contact portion with the hole aligned in an insertion direction of the connector. The terminal portion has a connection portion to be superposed with the electrical contact portion and has a second hole to be communicated with the hole. The case has a housing portion for supporting the connection portion so that the second hole of the connection portion is aligned with the insertion direction of the connector.Type: ApplicationFiled: November 30, 2010Publication date: September 20, 2012Applicant: Yazaki CorporationInventors: Mitsuhiro Matsumoto, Hajime Kato, Kouichi Nakayama, Tsuyoshi Mizushima
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Publication number: 20120208404Abstract: The present invention provides a connector assembly having a small size and preventing a contact between a bolt fastener and a detection member. The connector assembly includes a connector having an inner chamber with an opening and a plurality of connector terminals, a connector receptacle having a plurality of connector receptacle terminals securable together with the connector terminals and a first detection member, and a cover for covering the opening and having a second detection member. When the opening of the inner chamber is covered with the cover, the first detection member and the second detection member are connected together and detect that the cover is covered. The first detection member is disposed between the adjacent connector receptacle terminals. An end surface of the first housing is positioned inwardly of the inner chamber with respect to a surface of a connector electrical contact portion.Type: ApplicationFiled: October 28, 2010Publication date: August 16, 2012Inventors: Mitsuhiro Matsumoto, Hajime Kato, Kouichi Nakayama, Tsuyoshi Mizushima
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Patent number: 7659356Abstract: A polypropylene type aqueous dispersion comprising the following components (a) to (c): (a) a polypropylene type polymer 100 parts by weight and/or a modified polypropylene type polymer (b) a surfactant 1 to 100 parts by weight, and (c) water 100 to 1,000 parts by weight, wherein the component (a) has a main chain having the following features (1) and (2) and dispersion particles in the dispersion have an average particle size of at most 0.5 ?m, Feature (1) when observing a peak derived from a carbon atom of a methyl group in a propylene unit chain part comprising a head-to-tail bond by 13C-NMR and fixing a chemical shift of a peak top at a peak attributable to pentad expressed by mmmm to 21.8 ppm, a ratio (S1/S) of an area S1 of a peak of a peak top at 21.8 ppm to a total area S of peaks at from 19.8 ppm to 22.1 ppm is at least 10% and at most 60%, and when an area of a peak (mmmr) of a peak top at 21.5 to 21.Type: GrantFiled: August 4, 2008Date of Patent: February 9, 2010Assignee: Mitsubishi Chemical CorporationInventors: Teruaki Ashihara, Masato Onoe, Kazuyuki Hata, Fumihiko Shimizu, Naomasa Sato, Yukihito Zanka, Kouichi Nakayama
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Patent number: 7582696Abstract: A polypropylene-based resin composition of drastically improved dimensional stability realized by incorporating a polypropylene resin of specific structure with an inorganic filler of specific particle size, carbon fibers of specific fiber diameter and length, and, as required, an ethylene- and/or styrene-based elastomer. Another polypropylene-based resin composition of well-balanced properties of rigidity, heat-resistance, impact resistance and lightness even essentially in the absence of inorganic filler, realized by compositing a propylene/ethylene block copolymer of specific structure and well-balanced mechanical properties with an ethylene- and/or styrene-based elastomer, and carbon fibers of specific structure.Type: GrantFiled: December 21, 2004Date of Patent: September 1, 2009Assignee: Japan Polypropylene CorporationInventors: Kouichi Nakayama, Yukihito Zanka