Patents by Inventor Jiro Kato
Jiro Kato 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: 20160084139Abstract: An exhaust device of a multi-cylinder engine which controls local introduction of exhaust gas to a catalyst device and a variation between cylinders of introduction positions of the exhaust gas to the catalyst device is provided. The exhaust device is arranged so that the cylinders extend in a vehicle width direction at a vehicle front part, and an exhaust line is arranged so as to extend rearward from a rear of the engine, wherein, in sequence from an upstream side of an exhaust gas flow, four independent exhaust pipes corresponding to the cylinders, collecting pipes which collect all independent exhaust pipes, and the catalyst device are provided. The single exhaust pipe includes two bending parts and a downstream part thereof is connected so that the exhaust gas is introduced from a direction that is diagonally lateral to an inlet part of the catalyst device.Type: ApplicationFiled: August 12, 2015Publication date: March 24, 2016Inventors: Jiro Kato, Tatsuya Koga, Shinji Sumi, Haruna Yanagida, Norihisa Murata
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Publication number: 20160075137Abstract: A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.Type: ApplicationFiled: November 16, 2015Publication date: March 17, 2016Inventors: Eiju HIRAI, Shiro YAZAKI, Koji SUMI, Motoki TAKABE, Jiro KATO, Hiroshi ITO, Toshihiro SHIMIZU, Takahiro KAMIJO, Tatsuro TORIMOTO, Chikara KOJIMA
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Patent number: 9272507Abstract: A liquid ejecting head includes a flow channel forming substrate having pressure generation chambers communicating with a nozzle opening and arranged in parallel along a lateral direction. A piezoelectric element is provided on one surface of the flow channel forming substrate in correspondence to the pressure generation chamber, and has a first electrode, a piezoelectric layer provided on the first electrode and a second electrode provided on the piezoelectric layer. In a direction intersecting with the arrangement direction of the pressure generation chambers, in boundaries between an active section that is a substantial driving section and an inactive section that is not a substantial driving section of the piezoelectric layer, the first electrode includes a taper section of which a width is gradually decreased toward the boundary from the active section side.Type: GrantFiled: May 2, 2014Date of Patent: March 1, 2016Assignee: Seiko Epson CorporationInventors: Hiromu Miyazawa, Hiroshi Ito, Jiro Kato, Eiju Hirai, Toshihiro Shimizu
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Publication number: 20150367643Abstract: A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.Type: ApplicationFiled: August 28, 2015Publication date: December 24, 2015Inventors: Eiju HIRAI, Shiro YAZAKI, Koji SUMI, Motoki TAKABE, Jiro KATO, Hiroshi ITO, Toshihiro SHIMIZU, Takahiro KAMIJO, Tatsuro TORIMOTO, Chikara KOJIMA
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Patent number: 9144977Abstract: A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.Type: GrantFiled: December 10, 2014Date of Patent: September 29, 2015Assignee: Seiko Epson CorporationInventors: Eiju Hirai, Shiro Yazaki, Koji Sumi, Motoki Takabe, Jiro Kato, Hiroshi Ito, Toshihiro Shimizu, Takahiro Kamijo, Tatsuro Torimoto, Chikara Kojima
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Patent number: 9114613Abstract: There is provided a piezoelectric device comprising a first electrode, a piezoelectric layer that is formed above the first electrode, a second electrode that is formed above the piezoelectric layer and a coating layer that is formed above the second electrode consisting of tungsten or titanium.Type: GrantFiled: November 18, 2014Date of Patent: August 25, 2015Assignee: Seiko Epson CorporationInventors: Toshihiro Shimizu, Hiroshi Ito, Jiro Kato, Eiju Hirai
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Publication number: 20150226754Abstract: A stimulus-responsive gel material includes: a polymeric material containing as constituent components, a first monomer having a chemical structure represented by the following formula (1) and a second monomer having higher hydrophobicity than the first monomer; fine particles having an average particle diameter of 10 nm or more and 1000 nm or less; and a solvent, wherein the wavelength of a reflected light from the material changes according to the concentration of salt to come in contact with the material. In the formula (1), R is a substituent containing at least a carbon atom and a hydrogen atom, and when the number of carbon atoms in R is denoted by n and the number of oxygen atoms in R is denoted by m, n-m is an integer of 3 or more.Type: ApplicationFiled: February 11, 2015Publication date: August 13, 2015Inventors: Satomi YOSHIOKA, Hiroshi YAGI, Jiro KATO
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Patent number: 9050800Abstract: A liquid ejecting head comprises a pressure generation chamber communicating with a nozzle opening, a vibrating wall provided as one surface of the pressure generation chamber and vibrates so that ejects the liquid from the nozzle opening, and a resin portion having a recessed arc-shape and formed in a corner of the pressure generation chamber and formed of a resin material having a Young's modulus of less than or equal to 10 GPa. A ratio r/w of a radius r of the surface of the resin portion to a width w of the pressure generation chamber defined by the vibrating wall is greater than or equal to 0.017 and less than or equal to 0.087.Type: GrantFiled: September 6, 2013Date of Patent: June 9, 2015Assignee: Seiko Epson CorporationInventors: Hiroshi Ito, Yasumi Ikehara, Jiro Kato, Hiroyuki Tomimatsu
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Patent number: 8998389Abstract: A liquid ejecting head comprises a pressure generation chamber communicating with a nozzle opening, a vibrating wall provided as one surface of the pressure generation chamber and vibrates so that ejects the liquid from the nozzle opening, and a resin portion having a recessed arc-shape and formed in a corner of the pressure generation chamber and formed of a resin material having a Young's modulus of less than or equal to 10 GPa. A ratio r/w of a radius r of the surface of the resin portion to a width w of the pressure generation chamber defined by the vibrating wall is greater than or equal to 0.017 and less than or equal to 0.087.Type: GrantFiled: September 6, 2013Date of Patent: April 7, 2015Assignee: Seiko Epson CorporationInventors: Hiroshi Ito, Yasumi Ikehara, Jiro Kato, Hiroyuki Tomimatsu
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Publication number: 20150085024Abstract: A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.Type: ApplicationFiled: December 10, 2014Publication date: March 26, 2015Inventors: Eiju HIRAI, Shiro YAZAKI, Koji SUMI, Motoki TAKABE, Jiro KATO, Hiroshi ITO, Toshihiro SHIMIZU, Takahiro KAMIJO, Tatsuro TORIMOTO, Chikara KOJIMA
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Publication number: 20150077476Abstract: There is provided a piezoelectric device comprising a first electrode, a piezoelectric layer that is formed above the first electrode, a second electrode that is formed above the piezoelectric layer and a coating layer that is formed above the second electrode consisting of tungsten or titanium.Type: ApplicationFiled: November 18, 2014Publication date: March 19, 2015Inventors: Toshihiro SHIMIZU, Hiroshi ITO, Jiro KATO, Eiju HIRAI
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Patent number: 8926070Abstract: There is provided a piezoelectric device comprising a first electrode, a piezoelectric layer that is formed above the first electrode, a second electrode that is formed above the piezoelectric layer and a coating layer that is formed above the second electrode consisting of tungsten or titanium.Type: GrantFiled: December 18, 2013Date of Patent: January 6, 2015Assignee: Seiko Epson CorporationInventors: Toshihiro Shimizu, Hiroshi Ito, Jiro Kato, Eiju Hirai
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Patent number: 8914955Abstract: A method for manufacturing a piezoelectric element includes a process for forming a first conductive layer, a process for forming a piezoelectric layer having a region serving as an active region, a process for forming a second conductive layer, which overlaps with the region, a process for forming a third conductive layer, which overlaps with the region, on the second conductive layer, a process for forming an opening portion that divides the third conductive layer into a first portion and a second portion, a process for forming a resist layer that covers the opening portion and a peripheral portion at the side of the opening portion of the first portion and the second portion; a process for etching the third conductive layer to form a first conductive portion and a second conductive portion, and a process for etching the second conductive layer to form a third conductive portion.Type: GrantFiled: July 7, 2011Date of Patent: December 23, 2014Assignee: Seiko Epson CorporationInventors: Eiju Hirai, Hiroshi Ito, Toshihiro Shimizu, Jiro Kato
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Patent number: 8851631Abstract: The liquid ejecting head includes a nozzle plate in which nozzle holes which are through holes are formed, and ejects liquid from the nozzle holes. The nozzle hole has a first nozzle portion which is opened to an ejection surface to which liquid is ejected from nozzles of the nozzle plate, and a second nozzle portion which communicates with the first nozzle portion, and is opened to a surface opposite to the ejection surface of the nozzle plate, and of which the opening diameter is larger than the opening diameter in the ejection surface of the first nozzle portion. The first nozzle portion is covered with a liquid repellent film which has higher liquid repellency than a base material of the nozzle plate and an inner wall of the second nozzle portion is provided with a region which has lower liquid repellency than the liquid repellent film.Type: GrantFiled: July 27, 2012Date of Patent: October 7, 2014Assignee: Seiko Epson CorporationInventors: Jiro Kato, Ichiro Asaoka, Mitsuhiro Wada, Satoshi Denda
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Patent number: 8819903Abstract: A manufacturing method of a piezoelectric element includes: forming a first conductive layer upon a substrate; forming a piezoelectric layer upon the first conductive layer; forming a second conductive layer upon the piezoelectric layer; forming a third conductive layer upon the second conductive layer; forming a first portion, a second portion, and an opening portion provided between the first portion and the second portion by patterning the third conductive layer; forming a resist layer that covers the opening portion and covers the edges of the first portion and the second portion that face the opening portion side; and forming a first conductive portion and a second conductive portion configured from the first portion and the second portion, and forming a third conductive portion configured from the second conductive layer, by dry-etching the second conductive layer using the first portion, the second portion, and the resist layer as a mask.Type: GrantFiled: August 3, 2011Date of Patent: September 2, 2014Assignee: Seiko Epson CorporationInventors: Toshihiro Shimizu, Jiro Kato, Eiju Hirai, Hiroshi Ito
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Publication number: 20140240403Abstract: A liquid ejecting head includes a flow channel forming substrate having pressure generation chambers communicating with a nozzle opening and arranged in parallel along a lateral direction. A piezoelectric element is provided on one surface of the flow channel forming substrate in correspondence to the pressure generation chamber, and has a first electrode, a piezoelectric layer provided on the first electrode and a second electrode provided on the piezoelectric layer. In a direction intersecting with the arrangement direction of the pressure generation chambers, in boundaries between an active section that is a substantial driving section and an inactive section that is not a substantial driving section of the piezoelectric layer, the first electrode includes a taper section of which a width is gradually decreased toward the boundary from the active section side.Type: ApplicationFiled: May 2, 2014Publication date: August 28, 2014Applicant: SEIKO EPSON CORPORATIONInventors: Hiromu MIYAZAWA, Hiroshi ITO, Jiro KATO, Eiju HIRAI, Toshihiro SHIMIZU
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Publication number: 20140210916Abstract: A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.Type: ApplicationFiled: April 3, 2014Publication date: July 31, 2014Applicant: Seiko Epson CorporationInventors: Eiju HIRAI, Shiro YAZAKI, Koji SUMI, Motoki TAKABE, Jiro KATO, Hiroshi ITO, Toshihiro SHIMIZU, Takahiro KAMIJO, Tatsuro TORIMOTO, Chikara KOJIMA
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Patent number: 8752938Abstract: A liquid ejecting head includes a flow channel forming substrate having pressure generation chambers communicating with a nozzle opening and arranged in parallel along a lateral direction. A piezoelectric element is provided on one surface of the flow channel forming substrate in correspondence to the pressure generation chamber, and has a first electrode, a piezoelectric layer provided on the first electrode and a second electrode provided on the piezoelectric layer. In a direction intersecting with the arrangement direction of the pressure generation chambers, in boundaries between an active section that is a substantial driving section and an inactive section that is not a substantial driving section of the piezoelectric layer, the first electrode includes a taper section of which a width is gradually decreased toward the boundary from the active section side.Type: GrantFiled: December 21, 2010Date of Patent: June 17, 2014Assignee: Seiko Epson CorporationInventors: Hiromu Miyazawa, Hiroshi Ito, Jiro Kato, Eiju Hirai, Toshihiro Shimizu
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Patent number: 8727510Abstract: A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.Type: GrantFiled: January 31, 2013Date of Patent: May 20, 2014Assignee: Seiko Epson CorporationInventors: Eiju Hirai, Shiro Yazaki, Koji Sumi, Motoki Takabe, Jiro Kato, Hiroshi Ito, Toshihiro Shimizu, Takahiro Kamijo, Tatsuro Torimoto, Chikara Kojima
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Patent number: 8721055Abstract: There is provided a piezoelectric device comprising a first electrode, a piezoelectric layer that is formed above the first electrode, a second electrode that is formed above the piezoelectric layer and a coating layer that is formed above the second electrode consisting of tungsten or titanium.Type: GrantFiled: April 26, 2011Date of Patent: May 13, 2014Assignee: Seiko Epson CorporationInventors: Toshihiro Shimizu, Hiroshi Ito, Jiro Kato, Eiju Hirai