Patents by Inventor Takashi Kuraoka
Takashi Kuraoka 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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Publication number: 20230105906Abstract: A method for manufacturing a wiring board that includes preparing a substrate including an insulating resin and a metal member having an anti-rust layer formed on a surface thereof that is arranged so as to face a second surface of the insulating resin. The method includes forming a bottomed hole by irradiating a first laser beam from a first surface side of the insulating resin. The bottomed hole penetrates the insulating resin and has an inner bottom surface that is the surface of the metal member. The method also includes removing the anti-rust layer formed on the surface of the metal member in the inner bottom surface of the bottomed hole, injecting a conductive paste into the bottomed hole and applying the conductive paste to the first surface of the insulating resin so as to have a wiring continuous with the injected conductive paste, and curing the conductive paste.Type: ApplicationFiled: September 28, 2022Publication date: April 6, 2023Applicant: NICHIA CORPORATIONInventors: Masaaki KATSUMATA, Takashi KURAOKA, Eiko MINATO
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Patent number: 10974030Abstract: A medical guide wire which can have both slidability and operability and can be easily manufactured is provided. A medical guide wire includes a long flexible wire body, and a wire-like material structure including a wire-like material arranged on the surface of the wire body, in which the wire-like material structure is thermally fused onto the wire body.Type: GrantFiled: October 11, 2017Date of Patent: April 13, 2021Assignee: GUNZE LIMITEDInventors: Junya Kanetake, Makoto Kawahara, Takashi Kuraoka
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Publication number: 20180056042Abstract: A medical guide wire which can have both slidability and operability and can be easily manufactured is provided. A medical guide wire includes a long flexible wire body, and a wire-like material structure including a wire-like material arranged on the surface of the wire body, in which the wire-like material structure is thermally fused onto the wire body.Type: ApplicationFiled: October 11, 2017Publication date: March 1, 2018Applicant: GUNZE LIMITEDInventors: Junya KANETAKE, Makoto KAWAHARA, Takashi KURAOKA
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Publication number: 20150306354Abstract: A medical guide wire which can have both slidability and operability and can be easily manufactured is provided. A medical guide wire (1) includes a long flexible wire body (2), and a wire-like material structure (3) including a wire-like material (31) arranged on the surface of the wire body (2), in which the wire-like material structure (3) is thermally fused onto the wire body (2).Type: ApplicationFiled: November 28, 2013Publication date: October 29, 2015Applicant: GUNZE LIMITEDInventors: Junya KANETAKE, Makoto KAWAHARA, Takashi KURAOKA
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Publication number: 20140143930Abstract: Trousers including a stretchable material in a helical form with a predetermined width provided in a portion of each of the trousers extending from a region corresponding to a lumbar of a wearer to a near-knee inner side region being a region corresponding to an inner side of a thigh area near the corresponding knee, via a region corresponding to an outside of the corresponding hip joint.Type: ApplicationFiled: September 28, 2011Publication date: May 29, 2014Applicant: MIDORI ANZEN CO., LTD.Inventors: Takashi Kuraoka, Shouhei Tamanaha, Kagari Sako
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Patent number: 8686106Abstract: The present invention provides a carbon black-dispersed polyamic acid solution composition having a high solids content and a high carbon black content. The invention further provides an intermediate transfer belt using the polyamic acid solution composition. The carbon black-dispersed polyamic acid solution composition is obtained by uniformly dispersing carbon black in a polyamic acid solution obtained by reacting biphenyltetracarboxylic dianhydride and an aromatic diamine in an organic polar solvent. The biphenyltetracarboxylic dianhydride includes 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 3,3?,4,4?-biphenyltetracarboxylic dianhydride. The aromatic diamine includes 4,4?-diaminodiphenyl ether and p-phenylenediamine. The polyamic acid solution has a solids content of 25 weight % or more.Type: GrantFiled: December 4, 2008Date of Patent: April 1, 2014Assignees: Gunze Limited, UBE Industries, Ltd.Inventors: Naoki Nishiura, Akira Ichino, Takashi Kuraoka, Toru Murakami, Takeshige Nakayama
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Patent number: 8506848Abstract: A semiconductive polyimide resin belt that exhibits excellent electrical properties, including the ability to achieve accurate image transfer in a color image-forming unit, and the ability to prevent variations in resistance due to the transfer voltage, enabling high-quality transfer images to be stably produced over an extended period of time; and excellent physical properties, including resistance to deterioration in flatness due to plastic deformation caused by loads applied in the width direction of the belt, excellent durability, and stable operation even after extended use; and an intermediate transfer belt made of the semiconductive polyimide resin belt. The semiconductive polyimide resin belt comprises carbon black and a polyimide resin.Type: GrantFiled: November 27, 2008Date of Patent: August 13, 2013Assignee: Gunze LimitedInventors: Akira Ichino, Naoki Nishiura, Takashi Kuraoka
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Patent number: 8367192Abstract: A main object of the present invention is to provide an intermediate transfer belt for image-forming devices and a method for producing the intermediate transfer belt, the intermediate transfer belt having excellent image transfer to rough paper and resistance to abrasion and being free from problems such as filming, by forming a surface layer that has excellent resistance to abrasion and in which defects such as pinholes are not likely to occur even when the surface layer is thinned.Type: GrantFiled: August 4, 2010Date of Patent: February 5, 2013Assignee: Gunze LimitedInventors: Takashi Kuraoka, Satoshi Mitsui, Yuukii Matsumura
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Patent number: 8314204Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: GrantFiled: October 25, 2011Date of Patent: November 20, 2012Assignees: Gunze Limited, Ube Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Patent number: 8303852Abstract: A carbon black-dispersed polyamic acid solution composition that utilizes carbon black excelling in safety and environmental adaptability and excels in the dispersion stability and fluidity of carbon black dispersed in polyamic acid solution, and that realizes high solid content and high carbon black content. An intermediate transfer belt of polyimide, which produces a transfer image of high quality in a color image-forming apparatus, produced from the polyamic acid solution composition. In particular, a carbon black-dispersed polyamic acid solution composition containing a polyamic acid solution obtained by reaction of approximately equimolar amounts of biphenyltetracarboxylic acid dianhydride and an aromatic diamine, and containing a carbon black of 2 to 6% volatile content produced by oil furnace process, wherein the solid content of the solution composition is 23 wt. % or more and wherein the carbon black content of the solid is in the range of 20 to 30 wt. %.Type: GrantFiled: September 18, 2007Date of Patent: November 6, 2012Assignees: Gunze Limited, Ube Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Toru Murakami
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Publication number: 20120128953Abstract: A main object of the present invention is to provide an intermediate transfer belt for image-forming devices and a method for producing the intermediate transfer belt, the intermediate transfer belt having excellent image transfer to rough paper and resistance to abrasion and being free from problems such as filming, by forming a surface layer that has excellent resistance to abrasion and in which defects such as pinholes are not likely to occur even when the surface layer is thinned. An intermediate transfer belt for image-forming devices and a method for producing the same, the intermediate transfer belt comprising at least the following three layers laminated in the described order: (a) a base layer formed from resin, (b) a rubber-elastic layer formed from a rubber or elastomer, having a thickness of 200 to 400 ?m and (c) a surface layer formed from resin, having a thickness of 0.Type: ApplicationFiled: August 4, 2010Publication date: May 24, 2012Inventors: Takashi Kuraoka, Satoshi Mitsui, Yuuki Matsumura
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Publication number: 20120040121Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Applicants: UBE INDUSTRIES, LTD., GUNZE LIMITEDInventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Patent number: 8097693Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: GrantFiled: October 8, 2004Date of Patent: January 17, 2012Assignees: Gunze Limited, UBE Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Publication number: 20100329751Abstract: An object of the present invention is to provide a semiconductive polyimide resin belt that exhibits electrical properties, including the ability to achieve accurate image transfer in a color image-forming unit, and the ability to prevent variations in resistance due to the transfer voltage, enabling high-quality transfer images to be stably produced over an extended period of time; and physical properties, including resistance to deterioration in flatness due to plastic deformation caused by loads applied in the width direction of the belt, excellent durability, and stable operation even after extended use; and more particularly, to provide an intermediate transfer belt made of the semiconductive polyimide resin belt. The semiconductive polyimide resin belt comprises carbon black and a polyimide resin.Type: ApplicationFiled: November 27, 2008Publication date: December 30, 2010Applicant: GUNZE LIMITEDInventors: Akira Ichino, Naoki Nishiura, Takashi Kuraoka
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Publication number: 20100247888Abstract: The present invention provides a carbon black-dispersed polyamic acid solution composition having a high solids content and a high carbon black content. The invention further provides an intermediate transfer belt using the polyamic acid solution composition. The carbon black-dispersed polyamic acid solution composition is obtained by uniformly dispersing carbon black in a polyamic acid solution obtained by reacting biphenyltetracarboxylic dianhydride and an aromatic diamine in an organic polar solvent. The biphenyltetracarboxylic dianhydride includes 2,3,3?,4?-biphenyltetracarboxylic dianhydride and 3,3?,4,4?-biphenyltetracarboxylic dianhydride. The aromatic diamine includes 4,4?-diaminodiphenyl ether and p-phenylenediamine. The polyamic acid solution has a solids content of 25 weight % or more.Type: ApplicationFiled: December 4, 2008Publication date: September 30, 2010Inventors: Naoki Nishiura, Akira Ichino, Takashi Kuraoka, Toru Murakami, Takeshige Nakayama
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Publication number: 20090236566Abstract: A carbon black-dispersed polyamic acid solution composition that utilizes carbon black excelling in safety and environmental adaptability and excels in the dispersion stability and fluidity of carbon black dispersed in polyamic acid solution, and that realizes high solid content and high carbon black content. Further, an intermediate transfer belt of polyimide, which produces a transfer image of high quality in a color image-forming apparatus, is provided with the use of the above polyamic acid solution composition. In particular, there is provided a carbon black-dispersed polyamic acid solution composition containing a polyamic acid solution obtained by reaction of approximately equimolar amounts of biphenyltetracarboxylic acid dianhydride and an aromatic diamine, and containing a carbon black of 2 to 6% volatile content produced by oil furnace process, wherein the solid content of the solution composition is 23 wt. % or more and wherein the carbon black content of the solid is in the range of 20 to 30 wt.Type: ApplicationFiled: September 18, 2007Publication date: September 24, 2009Applicants: GUNZE LIMITED, UBE INDUSTRIES, LTD.Inventors: Naoki Nishiura, Takashi Kuraoka, Toru Murakami
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Publication number: 20070178264Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: ApplicationFiled: October 8, 2004Publication date: August 2, 2007Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Patent number: 6303054Abstract: The present invention provides an electrically-semiconductive poly(amic acid) liquid composition and a use thereof. An electrically-semiconductive poly(amic acid) (polyimide precursor) liquid composition whose electrical semiconductivity is applied by comprising an electrically-conductive carbon black. Change in an electrical resistivity of the liquid composition after being stored for 180 days at a temperature of 23° C. and in an atmosphere of a RH of 65% is 7% or less based on the electrical resistivity immediately after the preparation of the liquid composition. The electrically-semiconductive poly(amic acid) liquid composition is obtainable by mixing 5-40 parts by weight of a poly(amic acid), 95-60 parts by weight of an organic polar solvent and 10-40% by weight based on the poly(amic acid) of an electrically-conductive carbon black having a volatile content of 5-20%, a specific surface area of 100-300 m2/g and a pH of 2-4.Type: GrantFiled: August 14, 2000Date of Patent: October 16, 2001Assignee: Gunze LimitedInventors: Junya Kanetake, Tsutomu Yoshida, Naoki Nishiura, Tsuneo Miyamoto, Takashi Kuraoka
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Patent number: D660552Type: GrantFiled: October 24, 2011Date of Patent: May 29, 2012Assignee: Midori Creative Apparel Co., Ltd.Inventors: Takashi Kuraoka, Kagari Sako, Shouhei Tamanaha
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Patent number: D686798Type: GrantFiled: October 24, 2011Date of Patent: July 30, 2013Assignee: Midori Creative Apparel Co., Ltd.Inventors: Kagari Sako, Takashi Kuraoka, Shouhei Tamanaha