Patents by Inventor Kumiko Ishikawa
Kumiko Ishikawa 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).
-
Patent number: 11988666Abstract: A lectin-binding substance measurement method is a method for measuring a lectin-binding substance in a sample, and includes a measuring step of bringing a blocked labeled lectin including a water-soluble carrier made of a first water-soluble polymer and a labeling substance and a lectin immobilized on the water-soluble carrier into contact with the sample.Type: GrantFiled: September 1, 2020Date of Patent: May 21, 2024Assignee: FUJIREBIO INC.Inventors: Tomonori Nishii, Kazunori Okada, Naoki Ishikawa, Kumiko Iida, Shintaro Yagi, Katsumi Aoyagi
-
Publication number: 20240130042Abstract: A circuit board that includes a ceramic substrate; a protruding electrode on a surface of the ceramic substrate; and a protective layer containing a metal oxide and covering at least a portion of a lateral surface of the protruding electrode and extending continuously across a boundary between the portion of the lateral surface of the protruding electrode and the surface of the ceramic substrate.Type: ApplicationFiled: December 27, 2023Publication date: April 18, 2024Inventor: Kumiko ISHIKAWA
-
Patent number: 10854385Abstract: A method for producing a ceramic substrate that includes a substrate body having ceramic layers and columnar projecting electrodes on a first primary surface of the substrate body. The method includes a step of preparing electrode formation sheets for forming the projecting electrodes, a step of perforating the electrode formation sheets with through holes and filling the through holes with a first electrically conductive paste containing a first electrically conductive powder, a step of building a composite multilayer body by stacking ceramic green sheets and the electrode formation sheets on a first primary surface of the stack of ceramic green sheets. The first electrically conductive powder contains electrically conductive metal(s) and anti-sintering ceramic(s) that controls the sintering of particles of the electrically conductive metal(s), with at least part of the surface of the particles of the electrically conductive metal(s) covered with the anti-sintering ceramic(s).Type: GrantFiled: March 17, 2020Date of Patent: December 1, 2020Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Kumiko Ishikawa, Seiji Fujita, Tsutomu Sasaki
-
Publication number: 20200219652Abstract: A method for producing a ceramic substrate that includes a substrate body having ceramic layers and columnar projecting electrodes on a first primary surface of the substrate body. The method includes a step of preparing electrode formation sheets for forming the projecting electrodes, a step of perforating the electrode formation sheets with through holes and filling the through holes with a first electrically conductive paste containing a first electrically conductive powder, a step of building a composite multilayer body by stacking ceramic green sheets and the electrode formation sheets on a first primary surface of the stack of ceramic green sheets. The first electrically conductive powder contains electrically conductive metal(s) and anti-sintering ceramic(s) that controls the sintering of particles of the electrically conductive metal(s), with at least part of the surface of the particles of the electrically conductive metal(s) covered with the anti-sintering ceramic(s).Type: ApplicationFiled: March 17, 2020Publication date: July 9, 2020Inventors: Kumiko ISHIKAWA, Seiji FUJITA, Tsutomu SASAKI
-
Patent number: 9466970Abstract: An ESD protection device having high insulation reliability and excellent discharge characteristics is provided. In an ESD protection device including a first and a second discharge electrode disposed to face each other, a discharge auxiliary electrode (18) formed so as to bridge the first and second discharge electrodes, and an insulating substrate holding the first and second discharge electrodes and the discharge auxiliary electrode (18), the discharge auxiliary electrode (18) is formed of an aggregate of metal grains (24) each having a core-shell structure comprising a core portion (22) primarily formed of a first metal and a shell portion (23) primarily formed of a metal oxide containing a second metal, and the aggregate of metal grains (24) further includes an insulating resin (27) which bonds the metal grains (24) to each other.Type: GrantFiled: February 24, 2015Date of Patent: October 11, 2016Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takahiro Sumi, Jun Adachi, Takayuki Tsukizawa, Kumiko Ishikawa
-
Patent number: 9374877Abstract: Provided is an ESD protection device having high insulation reliability and good discharge characteristics. An ESD protection device includes a first discharge electrode and a second discharge electrode that are disposed so as to face each other, a discharge auxiliary electrode (18) formed so as to span between the first discharge electrode and the second discharge electrode, and an insulator base that holds the first discharge electrode, the second discharge electrode, and the discharge auxiliary electrode (18). The discharge auxiliary electrode (18) includes an aggregate of a plurality of metal particles (24) each having a core-shell structure including a core portion (22) that contains, as a main component, a first metal and a shell portion (23) that contains, as a main component, a metal oxide containing a second metal. A pore (26) is present in at least part of the shell portion (23).Type: GrantFiled: July 28, 2014Date of Patent: June 21, 2016Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takahiro Sumi, Jun Adachi, Takayuki Tsukizawa, Kumiko Ishikawa
-
Patent number: 9373954Abstract: Provided is an ESD protection device having excellent discharge characteristics at a low applied voltage. An ESD protection device includes a first discharge electrode and a second discharge electrode that are disposed so as to face each other, a discharge auxiliary electrode formed so as to span between the first discharge electrode and the second discharge electrode, and an insulator base that holds the first discharge electrode, the second discharge electrode, and the discharge auxiliary electrode. The discharge auxiliary electrode includes a plurality of metal particles (22) containing a first metal as a main component. Fine irregularities are formed on the surfaces of the metal particles (22). More specifically, the metal particles (22) has a fractal dimension D of 1.03 or more. Since electric charges are concentrated on the fine irregularities, discharge can be generated in the discharge auxiliary electrode by applying a relatively low voltage.Type: GrantFiled: July 16, 2014Date of Patent: June 21, 2016Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takahiro Sumi, Kumiko Ishikawa, Jun Adachi, Takayuki Tsukizawa
-
Publication number: 20150171618Abstract: An ESD protection device having high insulation reliability and excellent discharge characteristics is provided. In an ESD protection device including a first and a second discharge electrode disposed to face each other, a discharge auxiliary electrode (18) formed so as to bridge the first and second discharge electrodes, and an insulating substrate holding the first and second discharge electrodes and the discharge auxiliary electrode (18), the discharge auxiliary electrode (18) is formed of an aggregate of metal grains (24) each having a core-shell structure comprising a core portion (22) primarily formed of a first metal and a shell portion (23) primarily formed of a metal oxide containing a second metal, and the aggregate of metal grains (24) further includes an insulating resin (27) which bonds the metal grains (24) to each other.Type: ApplicationFiled: February 24, 2015Publication date: June 18, 2015Inventors: Takahiro Sumi, Jun Adachi, Takayuki Tsukizawa, Kumiko Ishikawa
-
Publication number: 20140340812Abstract: Provided is an ESD protection device having high insulation reliability and good discharge characteristics. An ESD protection device includes a first discharge electrode and a second discharge electrode that are disposed so as to face each other, a discharge auxiliary electrode (18) formed so as to span between the first discharge electrode and the second discharge electrode, and an insulator base that holds the first discharge electrode, the second discharge electrode, and the discharge auxiliary electrode (18). The discharge auxiliary electrode (18) includes an aggregate of a plurality of metal particles (24) each having a core-shell structure including a core portion (22) that contains, as a main component, a first metal and a shell portion (23) that contains, as a main component, a metal oxide containing a second metal. A pore (26) is present in at least part of the shell portion (23).Type: ApplicationFiled: July 28, 2014Publication date: November 20, 2014Inventors: Takahiro Sumi, Jun Adachi, Takayuki Tsukizawa, Kumiko Ishikawa
-
Publication number: 20140327993Abstract: Provided is an ESD protection device having excellent discharge characteristics at a low applied voltage. An ESD protection device includes a first discharge electrode and a second discharge electrode that are disposed so as to face each other, a discharge auxiliary electrode formed so as to span between the first discharge electrode and the second discharge electrode, and an insulator base that holds the first discharge electrode, the second discharge electrode, and the discharge auxiliary electrode. The discharge auxiliary electrode includes a plurality of metal particles (22) containing a first metal as a main component. Fine irregularities are formed on the surfaces of the metal particles (22). More specifically, the metal particles (22) has a fractal dimension D of 1.03 or more. Since electric charges are concentrated on the fine irregularities, discharge can be generated in the discharge auxiliary electrode by applying a relatively low voltage.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Inventors: Takahiro Sumi, Kumiko Ishikawa, Jun Adachi, Takayuki Tsukizawa