Patents by Inventor Koichi Kusakawa
Koichi Kusakawa 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: 8613460Abstract: A bush- and bracket-integrated stabilizer bar includes a stabilizer bar, a rubber bush attached to an outer periphery of the stabilizer bar, and a bracket configured to mount the stabilizer bar to a bottom of a vehicle body with the rubber bush intervened. The stabilizer bar has amine-based curable epoxy paint or amine-containing cationic paint and a surface treatment layer containing a halogen donor-based surface treatment agent on the paint. The rubber bush has a surface treatment layer containing a halogen donor-based surface treatment agent on an inner surface thereof. A thermosetting epoxy adhesive layer containing an amine-based or an organic hydrazide-based curing agent and a bisphenol type epoxy resin is formed between the stabilizer bar and the rubber bush.Type: GrantFiled: June 6, 2013Date of Patent: December 24, 2013Assignee: NHK Spring Co., Ltd.Inventors: Taisuke Suwa, Yutaka Natsume, Koichi Kusakawa
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Patent number: 8595917Abstract: A flexure 11 has a substrate 13 made of a thin conductive metal plate, a base insulating layer 31 made of flexible resin formed on the substrate, wiring patterns 15 formed on the base insulating layer and connected to a slider mount 17, and a cover insulating layer 33 formed over the wiring patterns. The flexure 11 is substantially coated with a conductive polymer layer 39 having a thickness in the range of 18 to 130 nm. The flexure 11 prevents electrostatic accumulation and ion migration that are trade-offs.Type: GrantFiled: May 24, 2012Date of Patent: December 3, 2013Assignee: NHK Spring Co., Ltd.Inventors: Hajime Arai, Eijiro Furuta, Koichi Kusakawa
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Publication number: 20130270787Abstract: A bush- and bracket-integrated stabilizer bar includes a stabilizer bar, a rubber bush attached to an outer periphery of the stabilizer bar, and a bracket configured to mount the stabilizer bar to a bottom of a vehicle body with the rubber bush intervened. The stabilizer bar has amine-based curable epoxy paint or amine-containing cationic paint and a surface treatment layer containing a halogen donor-based surface treatment agent on the paint. The rubber bush has a surface treatment layer containing a halogen donor-based surface treatment agent on an inner surface thereof. A thermosetting epoxy adhesive layer containing an amine-based or an organic hydrazide-based curing agent and a bisphenol type epoxy resin is formed between the stabilizer bar and the rubber bush.Type: ApplicationFiled: June 6, 2013Publication date: October 17, 2013Inventors: Taisuke SUWA, Yutaka NATSUME, Koichi KUSAKAWA
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Publication number: 20120231156Abstract: A flexure 11 has a substrate 13 made of a thin conductive metal plate, a base insulating layer 31 made of flexible resin formed on the substrate, wiring patterns 15 formed on the base insulating layer and connected to a slider mount 17, and a cover insulating layer 33 formed over the wiring patterns. The flexure 11 is substantially coated with a conductive polymer layer 39 having a thickness in the range of 18 to 130 nm. The flexure 11 prevents electrostatic accumulation and ion migration that are trade-offs.Type: ApplicationFiled: May 24, 2012Publication date: September 13, 2012Applicant: NHK SPRING CO., LTD.Inventors: Hajime ARAI, Eijiro Furuta, Koichi Kusakawa
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Patent number: 8218267Abstract: A flexure has a substrate made of a thin conductive metal plate, a base insulating layer made of flexible resin formed on the substrate, wiring patterns formed on the base insulating layer and connected to a slider mount, and a cover insulating layer formed over the wiring patterns. The flexure is substantially coated with a conductive polymer layer having a thickness in the range of 18 to 130 nm. The flexure prevents electrostatic accumulation and ion migration.Type: GrantFiled: May 21, 2008Date of Patent: July 10, 2012Assignee: NHK Spring Co., Ltd.Inventors: Hajime Arai, Eijiro Furuta, Koichi Kusakawa
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Publication number: 20100028650Abstract: A method of manufacturing a closed-cell urethane sheet, the method includes the steps of mixing a liquid urethane raw material with thermally expandable microcapsules to obtain a liquid urethane foam raw material, coating the liquid urethane foam raw material on at least one of the opposite surfaces of a releasable substrate to form a urethane raw material sheet, and heating the urethane raw material sheet from the opposite surfaces of the urethane raw material sheet to expand and cure the urethane raw material sheet to obtain the closed-cell urethane sheet.Type: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Applicant: NHK Spring Co., Ltd.Inventors: Koichi KUSAKAWA, Hiromasa Kawaguchi, Noriyuki Sera, Minoru Yoshioka
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Publication number: 20080291575Abstract: A flexure has a substrate made of a thin conductive metal plate, a base insulating layer made of flexible resin formed on the substrate, wiring patterns formed on the base insulating layer and connected to a slider mount, and a cover insulating layer formed over the wiring patterns. The flexure is substantially coated with a conductive polymer layer having a thickness in the range of 18 to 130 nm. The flexure prevents electrostatic accumulation and ion migration.Type: ApplicationFiled: May 21, 2008Publication date: November 27, 2008Applicant: NHK SPRING CO., LTD.Inventors: Hajime Arai, Eijiro Furuta, Koichi Kusakawa
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Publication number: 20070082962Abstract: A resin composition for a foam is composed of a branched rubbery olefin based soft resin (C) obtained by kneading and reacting an organic peroxide crosslinking type olefin based copolymer rubber (A) and an organic peroxide decomposing type crystalline olefin resin (B), in which the organic peroxide crosslinking type olefin based copolymer rubber (A) is present as a continuous phase as well as the organic peroxide decomposing type crystalline olefin resin (B) is present as a discontinuous phase in its microaggregation structure. This resin composition enables to provide foamed articles which can be used for interior parts for automobiles, have high to low foaming magnifications and a recycling property, and are soft and excellent in cushion property, thermal insulating property and in-mold foam molding property.Type: ApplicationFiled: October 29, 2004Publication date: April 12, 2007Applicant: NHK SPRING CO., LTD.Inventors: Koichi Kusakawa, Shigeki Ichimura
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Publication number: 20070072952Abstract: A resin composition for a foam is composed of a branched rubbery olefin based soft resin (C) where its gel fraction (a weight percentage of an insoluble content after extraction with xylene boiled at 138° C. for 3 hours) is less than 5%, and a volume ratio of a component which exhibits a mobility of less than 400 microseconds at a T2 (spin-spin relaxation) time by proton (H+) pulse nuclear magnetic resonance is 55 to 95%, obtained by kneading and reacting to thicken an organic peroxide crosslinking type olefin based copolymer rubber (A) and an organic peroxide decomposing type crystalline olefin resin (B). By the use of this resin composition, it is possible to provide foamed articles which can be used for interior parts for automobiles, have high to low foaming magnifications and a recycling property, and are soft and excellent in cushion property, thermal insulating property and in-mold foam molding property.Type: ApplicationFiled: October 29, 2004Publication date: March 29, 2007Applicant: NHK SPRING CO., LTD.Inventors: Koichi Kusakawa, Shigeki Ichimura, Yuji Maeda
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Patent number: 6684782Abstract: A low-cost flexographic printing plate which does not require a conventional tackiness tape or a tacky-elastic foam in mounting on a printing press and is capable of repeated uses and of high-accuracy printing. A flexographic printing plate and a raw plate therefor, comprising a photo-curable resin layer, a support layer with a barrier performance, an adhesive layer to stick the photo-curable resin layer and the support layer to each other, and an elastic layer, wherein the photo-curable resin layer and the elastic layer serve as the outermost layers, wherein the outer surface of the elastic layer has a rereleasable tacky surface.Type: GrantFiled: June 25, 2001Date of Patent: February 3, 2004Assignee: Asahi Kasei Kabushiki KaishaInventors: Tadashi Kawamoto, Kenji Suzuki, Koichi Kusakawa, Toshiaki Kimura
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Patent number: 6619667Abstract: A sealing structure for sealing a region of an article to be sealed, comprising a fixed form sealing material bonded to the region with an isocyanate group containing reactive polyurethane hot-melt adhesive.Type: GrantFiled: May 17, 2001Date of Patent: September 16, 2003Assignee: NHK Spring Co., Ltd.Inventors: Hiromasa Kawaguchi, Koichi Kusakawa
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Publication number: 20020008357Abstract: A sealing structure for sealing a region of an article to be sealed, comprising a fixed form sealing material bonded to the region with an isocyanate group containing reactive polyurethane hot-melt adhesive.Type: ApplicationFiled: May 17, 2001Publication date: January 24, 2002Inventors: Hiromasa Kawaguchi, Koichi Kusakawa
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Patent number: 6331576Abstract: A surface decorated foam skin of cross-linked rubbery soft olefin resin, comprising rubbery soft olefin resin, characterizing by having (1) an average cell diameter of 50 to 400 &mgr;m, (2) a crystallinity of 5 to 40% (3) a hysteresis loss of 35% or lower, and (4) an embossing percentage of 40% or higher.Type: GrantFiled: December 19, 2000Date of Patent: December 18, 2001Assignee: NHK Spring Co LtdInventors: Koichi Kusakawa, Shigeki Ichimura
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Patent number: 5972492Abstract: A foamed pad material for low-pressure compression molding which comprises a crosslinked rubbery olefinic soft resin foam and exhibits (a) a hysteresis loss of not greater than 40%, (b) a gel fraction of 20 to 98%, and (c) a density of 0.025 to 0.30 g/cm.sup.3. This foamed pad material is excellent in heat weldability with core forming materials and exhibits excellent heat resistance, strain resistance, moldability and restoring properties at the time of low-pressure compression molding at which compression and drawing are carried out at high temperatures. Moreover, the foamed pad material can allow the molded skin material to have cushioning properties with high flexibility and further to have improved feeling.Type: GrantFiled: September 10, 1996Date of Patent: October 26, 1999Assignees: Mitsui Chemicals, Inc., NHK Spring Co., Ltd.Inventors: Masaharu Murakami, Akira Uchiyama, Koichi Kusakawa, Shigeki Ichimura, Shinobu Haga
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Patent number: 4264743Abstract: A flexible or semi-rigid open-cell, polyurethane foam sealing material prepared from a polyisocyanate and a polyol component, a major portion of said polyol component consisting of a polyol derived from a dimer acid or castor oil, castor oil, or a mixture thereof in the presence of a blowing agent, a foam stabilizer, a catalyst, and, optionally, a lipophilic filler.Type: GrantFiled: April 23, 1979Date of Patent: April 28, 1981Assignee: NHK Spring Co., Ltd.Inventors: Takao Maruyama, Koichi Kusakawa, Toshiaki Kimura, Noboru Murata