Patents by Inventor Kiyoaki KODAMA
Kiyoaki KODAMA 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: 20220204813Abstract: An adhesive skin patch including a substrate and an adhesive layer, wherein the substrate is formed of a foam sheet having breaking elongation of 100% or more, breaking strength of 20 N/20 mm or less, a density of 0.5 g/cm3 or less and a thickness of 0.300 mm or more, the adhesive layer is formed on one side of the substrate, and the adhesive layer contains an acrylic copolymer and a liquid or pasty component at room temperature.Type: ApplicationFiled: January 28, 2020Publication date: June 30, 2022Applicant: NITTO DENKO CORPORATIONInventors: Noboru YOSHIDA, Kiyoaki KODAMA, Eriko ABE, Ryuhei ARIMA
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Publication number: 20220185982Abstract: Provided is a flame-retardant foam which has high flame retardancy, is excellent in flexibility, and is excellent in stress dispersibility. Also provided is a foam member including such flame-retardant foam as a flame-retardant foam layer. The flame-retardant foam of the present invention has an apparent density of from 0.02 g/cm3 to 0.40 g/cm3, a 50% compression load of from 0.5 N/cm2 to 8.0 N/cm2, and a rupture elongation in a tensile test of 120% or less.Type: ApplicationFiled: February 19, 2020Publication date: June 16, 2022Applicant: NITTO DENKO CORPORATIONInventors: Kiyoaki KODAMA, Makoto SAITO
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Publication number: 20220185979Abstract: Provided is a resin foam which has high stress dispersibility and is excellent in heat resistance. The resin foam of the present invention is a resin foam having a cell structure, wherein the resin foam has an apparent density of from 0.05 g/cm3 to 0.50 g/cm3, wherein the resin foam has a 50% compression load of from 2.0 N/cm2 to 30 N/cm2, and wherein the resin foam has an apparent density D (g/cm3) and a residue R (%) at 650° C. satisfying a relationship of the following expression (1).Type: ApplicationFiled: April 10, 2020Publication date: June 16, 2022Applicant: NITTO DENKO CORPORATIONInventors: Kiyoaki KODAMA, Makoto SAITO
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Publication number: 20220151836Abstract: An adhesive skin patch including a substrate and an adhesive layer, wherein the substrate is formed of a foam sheet having open cells and a bubble fraction of 70% or more, and the adhesive layer is partially formed on one side of the substrate.Type: ApplicationFiled: January 28, 2020Publication date: May 19, 2022Applicant: NITTO DENKO CORPORATIONInventors: Noboru YOSHIDA, Kiyoaki KODAMA, Eriko ABE, Ryuhei ARIMA
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Publication number: 20200109245Abstract: Provided is a temporary fixing sheet including a silicone foam layer and having excellent antistatic performance and a satisfactory appearance. A temporary fixing sheet includes a silicone foam layer, wherein the silicone foam layer is formed of a silicone resin composition including: an organopolysiloxane having at least two alkenyl groups in a molecule thereof; an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms in a molecule thereof; a mixture including water and an inorganic thickener; 0.2 part by weight to 1.2 parts by weight of a nonionic surfactant having an HLB value of 3 or more with respect to 1 part by weight of a component; 0.01 part by weight to 0.14 part by weight of a nonionic surfactant having an HLB value of less than 3 with respect to 1 part by weight of the component; a hydrosilylation reaction catalyst; a curing retarder; and a conductive substance.Type: ApplicationFiled: June 11, 2018Publication date: April 9, 2020Applicant: NITTO DENKO CORPORATIONInventors: Toru ISEKI, Hideyuki TOKUYAMA, Kiyoaki KODAMA, Makoto SAITO, Mitsuhiro KANADA
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Patent number: 9522985Abstract: There is provided a polyester elastomer foam having a micro and uniform cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer and a surface-treated inorganic substance (except hydroxides) to expand. A residue on a 166 mesh sieve in the surface-treated inorganic substance (except hydroxides) is preferably not more than 0.01%.Type: GrantFiled: July 10, 2012Date of Patent: December 20, 2016Assignee: NITTO DENKO CORPORATIONInventors: Kiyoaki Kodama, Makoto Saitou, Kazumichi Kato, Itsuhiro Hatanaka
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Publication number: 20160121576Abstract: An electroconductive pressure-sensitive adhesive cushioning member includes an electroconductive resin foam layer, an electroconductive composite layer, and an electroconductive intermediate layer disposed between the electroconductive resin foam layer and the electroconductive composite layer. The electroconductive composite layer includes an electroconductive base layer and an electroconductive attachment layer disposed on a surface of the electroconductive base layer and having an attachment surface to be attached to an obstacle. Thus, the electroconductive cushioning member is excellent in conductivity, an electromagnetic waves shieling property, and a cushioning property.Type: ApplicationFiled: October 30, 2015Publication date: May 5, 2016Applicant: NITTO DENKO CORPORATIONInventors: Shu SASAKI, Makoto SAITOU, Kiyoaki KODAMA, Masato FUJITA
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Patent number: 9156959Abstract: There is provided a polyester elastomer which is excellent in compression set characteristics and has a micro cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer having a melting point of 180 to 240° C. and an epoxy-modified polymer to expand. The epoxy-modified polymer is an epoxy-modified polymer having a weight average molecular weight of 5,000 to 100,000 and an epoxy equivalent of 100 to 3000 g/eq.Type: GrantFiled: July 3, 2012Date of Patent: October 13, 2015Assignee: NITTO DENKO CORPORATIONInventors: Kazumichi Kato, Makoto Saitou, Kiyoaki Kodama, Itsuhiro Hatanaka
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Patent number: 9150716Abstract: There is provided a resin foam excellent in dustproof performance, particularly dustproof performance in a dynamic environment. The resin foam of the present invention has a thickness recovery ratio of 65% or more, wherein the thickness recovery ratio is defined as a ratio of a thickness 1 second after releasing a compressed state to an initial thickness, when the resin foam is compressed for 1 minute in the thickness direction so as to give a thickness equal to 20% of the initial thickness in a 23° C. atmosphere; and then the compressed state is released in a 23° C. atmosphere.Type: GrantFiled: November 29, 2011Date of Patent: October 6, 2015Assignee: NITTO DENKO CORPORATIONInventors: Makoto Saitou, Itsuhiro Hatanaka, Kazumichi Kato, Kiyoaki Kodama
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Publication number: 20150218422Abstract: A resin foam having a repulsive stress when compressed by 80% of 1.0 to 9.0 N/cm2, a maximum breaking strength of 1.0 to 10.0 MPa, and a ratio of the maximum breaking strength to a breaking strength in a direction orthogonal to a maximum breaking strength direction (maximum breaking strength/breaking strength in the direction orthogonal to the maximum breaking strength direction) of 1.0 to 5.0. The maximum breaking strength is defined as: a resin foam in a sheet form is measured for a breaking strength in an arbitrary direction in the horizontal direction of the sheet; next, the arbitrary direction is rotated about an axis by 10° intervals to measure a breaking strength in each direction; a direction where the highest breaking strength is measured is defined as the maximum breaking strength direction; and a breaking strength in the maximum breaking strength direction is defined as the maximum breaking strength.Type: ApplicationFiled: May 21, 2013Publication date: August 6, 2015Applicant: NITTO DENKO CORPORATIONInventors: Kazumichi Kato, Makoto Saitou, Itsuhiro Hatanaka, Kiyoaki Kodama
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Publication number: 20150140315Abstract: A resin foam having excellent dustproofness not only at ordinary temperatures but also particularly at high temperatures as well as having excellent flexibility. The resin foam has a thickness recovery ratio at high temperatures as defined below of not less than 25%, an average cell diameter of 10 to 200 ?m, and a maximum cell diameter of not more than 300 ?m, wherein the thickness recovery ratio at high temperatures is defined as follows: a resin foam in a sheet form is compressed, in an atmosphere of 80° C., for 22 hours in a thickness direction so as to have a thickness of 20% of the initial thickness; then, the compression state is released in an atmosphere of 23° C.; and a ratio of a thickness 24 hours after the release of the compression state to the initial thickness is defined as the thickness recovery ratio at high temperatures.Type: ApplicationFiled: May 21, 2013Publication date: May 21, 2015Applicant: NITTO DENKO CORPORATIONInventors: Kazumichi Kato, Makoto Saitou, Kiyoaki Kodama
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Publication number: 20150118481Abstract: The present invention has the object of providing a resin foam and a foam material that exhibits superior dust resistance characteristics in a dynamic environment at the same time as having excellent light shielding characteristics, and is a resin foam having a repulsive force during an 80% compression at 23 degrees C. of 0.1 to 5.0 N/cm2, a surface coverage rate of a foam surface of at least 50%, and a thickness recovery rate as defined below of at least 50%, the thickness recovery rate is defined as the ratio to an initial thickness of the thickness one second after release of a compressed state that is obtained by releasing a compressed state after compressing resin foam for one minute to a thickness of 20% relative to the initial thickness.Type: ApplicationFiled: June 5, 2013Publication date: April 30, 2015Applicant: NITTO DENKO CORPORATIONInventors: Kiyoaki Kodama, Makoto Saitou, Itsuhiro Hatanaka, Kazumichi Kato
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Publication number: 20150099112Abstract: There is provided a resin foam excellent in deformation recovery performance after compressive deformation. The resin foam of the present invention has a stress retention to be defined below of not less than 70%: stress retention (%)=(compressive stress after 60 seconds)/(compressive stress after 0 seconds)×100 wherein a resin foam in a sheet form having a thickness of 1.0 mm is compressed in the thickness direction so that the resin foam has a thickness of 20% of the initial thickness, and the compression state is held; and the compressive stress immediately after compression is defined as “compressive stress after 0 seconds,” and the compressive stress 60 seconds after holding the compression state is defined as “compressive stress after 60 seconds.Type: ApplicationFiled: December 18, 2013Publication date: April 9, 2015Applicant: NITTO DENKO CORPORATIONInventors: Makoto Saitou, Kazumichi Kato, Kiyoaki Kodama, Naohiro Kato
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Publication number: 20140162050Abstract: There is provided a polyester elastomer foam having a micro and uniform cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer and a surface-treated inorganic substance (except hydroxides) to expand. A residue on a 166 mesh sieve in the surface-treated inorganic substance (except hydroxides) is preferably not more than 0.01%.Type: ApplicationFiled: July 10, 2012Publication date: June 12, 2014Applicant: NITTO DENKO CORPORATIONInventors: Kiyoaki Kodama, Makoto Saitou, Kazumichi Kato, Itsuhiro Hatanaka
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Publication number: 20130251979Abstract: There is provided a resin foam excellent in dustproof performance, particularly dustproof performance in a dynamic environment. The resin foam of the present invention has a thickness recovery ratio of 65% or more, wherein the thickness recovery ratio is defined as a ratio of a thickness 1 second after releasing a compressed state to an initial thickness, when the resin foam is compressed for 1 minute in the thickness direction so as to give a thickness equal to 20% of the initial thickness in a 23° C. atmosphere; and then the compressed state is released in a 23° C. atmosphere.Type: ApplicationFiled: November 29, 2011Publication date: September 26, 2013Applicant: NITTO DENKO CORPORATIONInventors: Makoto Saitou, Itsuhiro Hatanaka, Kazumichi Kato, Kiyoaki Kodama
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Publication number: 20130017391Abstract: There is provided a resin foam excellent in dustproofness and assemblability. The resin foam has a repulsive stress at 80% compression (repulsive stress when a resin foam is compressed by 80% of the initial thickness) of 1.0 to 9.0 N/cm2 and a tensile modulus of elasticity of 5.0 to 14.0 MPa. Preferably, the resin foam further has an average cell diameter of 10 to 180 ?m and an apparent density of 0.01 to 0.10 g/cm3.Type: ApplicationFiled: July 13, 2012Publication date: January 17, 2013Applicant: NITTO DENKO CORPORATIONInventors: Kazumichi KATO, Makoto SAITOU, Itsuhiro HATANAKA, Kiyoaki KODAMA
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Publication number: 20130011657Abstract: There is provided a polyester elastomer which is excellent in compression set characteristics and has a micro cell structure. The polyester elastomer foam is formed by allowing a polyester elastomer composition containing a polyester elastomer having a melting point of 180 to 240° C. and an epoxy-modified polymer to expand. The epoxy-modified polymer is an epoxy-modified polymer having a weight average molecular weight of 5,000 to 100,000 and an epoxy equivalent of 100 to 3000 g/eq.Type: ApplicationFiled: July 3, 2012Publication date: January 10, 2013Applicant: NITTO DENKO CORPORATIONInventors: Kazumichi KATO, Makoto SAITOU, Kiyoaki KODAMA, Itsuhiro HATANAKA
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Publication number: 20120183760Abstract: Disclosed are: a low dielectric sheet which is used for 2-D communication, can be used in a sheet structure for 2-D communication, and has the lowest dielectric constant and dielectric loss tangent to date; a production method therefor; and a 2-D communication structure using the dielectric sheet for 2-D communication. Specifically disclosed is a low dielectric sheet which is used for 2-D communication and is characterized by having a density of 0.01 to 0.2 g/cm3 and a dielectric constant of no more than 1.6. In particular, a foam that comprises cells and has a dielectric loss tangent of no more than 0.01 is preferred.Type: ApplicationFiled: September 29, 2010Publication date: July 19, 2012Applicant: NITTO DENKO CORPORATIONInventors: Kiyoaki Kodama, Makoto Saitou, Hiroichi Ukei, Toshihiko Tomita
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Publication number: 20110262744Abstract: The present invention relates to a resin foam having a resin compositional homogeneity throughout the entirety from a surface to an inside thereof, having a surface with a 60° gloss value based on JIS Z 8741 (1997) of 1.5 or more, and having a 25% compressive load based on JIS K 6767 (1999) of 2.00 N/cm2 or less.Type: ApplicationFiled: April 25, 2011Publication date: October 27, 2011Applicant: NITTO DENKO CORPORATIONInventors: Itsuhiro HATANAKA, Makoto SAITOU, Kazumichi KATO, Kiyoaki KODAMA