Patents by Inventor Makoto Higashibeppu
Makoto Higashibeppu 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: 20230131275Abstract: Provided is a piezoelectric ceramic composition including a potassium sodium niobate-based perovskite type complex oxide represented by Compositional Formula ABO3, as a main component. Further, the piezoelectric ceramic composition contains Bi in an A site and Zr in a B site. Further, the piezoelectric ceramic composition includes a segregation portion positioned in a crystal grain. At least one of Zr or Bi is localized in the segregation portion.Type: ApplicationFiled: March 26, 2021Publication date: April 27, 2023Inventors: Takeshi HIRAYAMA, Shuhei TABATA, Makoto HIGASHIBEPPU, Gen SHIMURA, Yukihiro HASEGAWA
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Publication number: 20230120552Abstract: A first active region is made of a piezoelectric overlaps a midsection of a pressure chamber when viewed in plan through a pressure applying surface. A second active region is made of a piezoelectric member closer than the first active region to the pressure applying surface. The second active region extends over both a peripheral section of the pressure chamber and an outer region located outside the pressure chamber when viewed in plan through the pressure applying surface. A driver controls intensity of a first electric field applied to the first active region and intensity of a second electric field applied to the second active region such that the time period over which the first active region contracts and the time period over which the second active region contracts overlap or coincide with each other. The first electric field is more intense than the second electric field.Type: ApplicationFiled: March 26, 2021Publication date: April 20, 2023Inventors: Shuhei TABATA, Makoto HIGASHIBEPPU, Takeshi HIRAYAMA, Gen SHIMURA, Yukihiro HASEGAWA
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Publication number: 20230038095Abstract: A piezoelectric actuator includes a piezoelectric layer and a conductor layer that is provided directly or indirectly on the piezoelectric layer. In plan view, the conductor layer includes a plurality of individual electrodes that are arranged with intervals therebetween and a plurality of wiring lines that extend from the plurality of individual electrodes. Each wiring line includes a wide portion and a first narrow portion. The wide portion includes a part positioned at a center of the wiring line in a length direction. The first narrow portion is disposed between the wide portion and one of the plurality of individual electrodes to which the wiring line is connected. The first narrow portion has a width less than a width of the wide portion.Type: ApplicationFiled: December 25, 2020Publication date: February 9, 2023Inventors: Shuhei TABATA, Makoto HIGASHIBEPPU, Takeshi HIRAYAMA, Gen SHIMURA, Yukihiro HASEGAWA
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Publication number: 20230032270Abstract: A piezoelectric actuator includes a common electrode on a piezoelectric layer at a first side adjacent to a first surface and extends over a plurality of piezoelectric elements. A plurality of first individual electrodes is on the piezoelectric layer at a second side adjacent to a second surface. Each of the plurality of first individual electrodes is at a piezoelectric element of the plurality of piezoelectric elements, and are not electrically connected together. A first insulating layer is on the common electrode at the first side and extends over the plurality of piezoelectric elements. A plurality of second individual electrodes is on the first insulating layer at the first side. Each of the plurality of second individual electrodes is at a piezoelectric element of the plurality of piezoelectric elements, and overlap centers of the plurality of first individual electrodes. The plurality of second individual electrodes are electrically connected together.Type: ApplicationFiled: December 25, 2020Publication date: February 2, 2023Inventors: Shuhei TABATA, Makoto HIGASHIBEPPU, Takeshi HIRAYAMA, Yukihiro HASEGAWA, Gen SHIMURA, Takashi MIYAHARA, Atsushi ISHIHARA
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Patent number: 10562303Abstract: A nozzle member includes a base, a metal oxide film, and a water-repellent film. The base includes a first surface having a plurality of through-holes as ejection orifices. The metal oxide film is located on the first surface. The water-repellent film is located on the metal oxide film. The metal oxide film has a greater thickness in a first area than in a second area. The first area is an area surrounding each ejection orifice. The second area is an area between adjacent first areas.Type: GrantFiled: January 27, 2017Date of Patent: February 18, 2020Assignee: KYOCERA CORPORATIONInventor: Makoto Higashibeppu
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Patent number: 10442198Abstract: A nozzle plate includes a base having a through-hole to be a nozzle, and a metal film covering at least an inner wall of the through-hole of the base. The base contains nickel as a main component. The metal film contains nickel and palladium as main components. In a cross section including the base and the metal film, the metal film has a palladium content variation smaller than or equal to 4 at % on an imaginary line (A) along an interface between the base and the metal film.Type: GrantFiled: September 16, 2016Date of Patent: October 15, 2019Assignee: KYOCERA CORPORATIONInventor: Makoto Higashibeppu
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Publication number: 20190039374Abstract: A nozzle member includes a base, a metal oxide film, and a water-repellent film. The base includes a first surface having a plurality of through-holes as ejection orifices. The metal oxide film is located on the first surface. The water-repellent film is located on the metal oxide film. The metal oxide film has a greater thickness in a first area than in a second area. The first area is an area surrounding each ejection orifice. The second area is an area between adjacent first areas.Type: ApplicationFiled: January 27, 2017Publication date: February 7, 2019Applicant: KYOCERA CorporationInventor: Makoto HIGASHIBEPPU
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Publication number: 20180304628Abstract: A nozzle plate includes a base having a through-hole to be a nozzle, and a metal film covering at least an inner wall of the through-hole of the base. The base contains nickel as a main component. The metal film contains nickel and palladium as main components. In a cross section including the base and the metal film, the metal film has a palladium content variation smaller than or equal to 4 at % on an imaginary line (A) along an interface between the base and the metal film.Type: ApplicationFiled: September 16, 2016Publication date: October 25, 2018Applicant: KYOCERA CorporationInventor: Makoto HIGASHIBEPPU
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Patent number: 9873248Abstract: The present invention aims at providing a piezoelectric element with less characteristic variations with time, and a liquid discharge head and a recording device each using the piezoelectric element. The piezoelectric element 30 of the present invention is the piezoelectric body 30 (piezoelectric ceramic layer 21b) containing a potassium sodium niobate composition as a primary component. The piezoelectric body extends in a planar direction. A compressive stress is applied in the planar direction. A phase transition point between a tetragonal crystal system and an orthorhombic crystal system is ?20° C. or below.Type: GrantFiled: November 28, 2014Date of Patent: January 23, 2018Assignee: KYOCERA CorporationInventors: Makoto Higashibeppu, Shuuhei Tabata, Tomonori Eguchi, Izuru Sato
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Publication number: 20170036445Abstract: The present invention aims at providing a piezoelectric element with less characteristic variations with time, and a liquid discharge head and a recording device each using the piezoelectric element. The piezoelectric element 30 of the present invention is the piezoelectric body 30 (piezoelectric ceramic layer 21b) containing a potassium sodium niobate composition as a primary component. The piezoelectric body extends in a planar direction. A compressive stress is applied in the planar direction. A phase transition point between a tetragonal crystal system and an orthorhombic crystal system is ?20° C. or below.Type: ApplicationFiled: November 28, 2014Publication date: February 9, 2017Applicant: KYOCERA CorporationInventors: Makoto Higashibeppu, Shuuhei Tabata, Tomonori Eguchi, Izuru Sato
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Patent number: 7084551Abstract: A piezoelectric converter comprising a piezoelectric actuator that includes a piezoelectric ceramic layer of thin plate shape being stacked on the surface of a substrate on the side thereof whereon cavities to be filled with a liquid are formed wherein, in order to prevent a significant buckling deformation from occurring in a region of the piezoelectric actuator that corresponds to the cavities of the substrate, the thickness T (mm) of the piezoelectric ceramic layer and maximum width W (mm) of the cavities in the direction of substrate surface are set so as to satisfy the relation of expression (1). T?(19.6 W+5.Type: GrantFiled: June 22, 2004Date of Patent: August 1, 2006Assignee: Kyocera CorporationInventors: Kenichi Yoshimura, Makoto Higashibeppu
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Patent number: 7044587Abstract: An actuator 1 in which a displacement element 7 has a piezoelectric ceramic layer 4 and a pair of electrodes 5, 6 interposing therebetween the piezoelectric ceramic layer 4. The entire thickness of the actuator 1 is 100 ?m or less. The piezoelectric ceramic layer 4 and the substrate 2 have as their principal component a perovskite crystal containing at least Pb; Zr and Ti, and, the maximum difference in a composition ratio Pb/(Ti+Zr) between the surface of the piezoelectric ceramic layer 4 and the inside of the substrate 2 is 0.02 or less. This reduces characteristic variation.Type: GrantFiled: October 17, 2003Date of Patent: May 16, 2006Assignee: Kyocera CorporationInventors: Yoshihiro Yuu, Daisuke Takahashi, Makoto Higashibeppu, Chitoshi Ueki, Hiroshi Aida
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Publication number: 20050018020Abstract: A piezoelectric converter comprising a piezoelectric actuator that includes a piezoelectric ceramic layer of thin plate shape being stacked on the surface of a substrate on the side thereof whereon cavities to be filled with a liquid are formed wherein, in order to prevent a significant buckling deformation from occurring in a region of the piezoelectric actuator that corresponds to the cavities of the substrate, the thickness T (mm) of the piezoelectric ceramic layer and maximum width W (mm) of the cavities in the direction of substrate surface are set so as to satisfy the relation of expression (1). T?(19.6 W+5.Type: ApplicationFiled: June 22, 2004Publication date: January 27, 2005Inventors: Kenichi Yoshimura, Makoto Higashibeppu
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Publication number: 20040113995Abstract: An actuator 1 in which a displacement element 7 has a piezoelectric ceramic layer 4 and a pair of electrodes 5, 6 interposing therebetween the piezoelectric ceramic layer 4. The entire thickness of the actuator 1 is 100 &mgr;m or less. The piezoelectric ceramic layer 4 and the substrate 2 have as their principal component a perovskite crystal containing at least Pb; Zr and Ti, and, the maximum difference in a composition ratio Pb/(Ti+Zr) between the surface of the piezoelectric ceramic layer 4 and the inside of the substrate 2 is 0.02 or less. This reduces characteristic variation.Type: ApplicationFiled: October 17, 2003Publication date: June 17, 2004Applicant: KYOCERA CORPORATIONInventors: Yoshihiro Yuu, Daisuke Takahashi, Makoto Higashibeppu, Chitoshi Ueki, Hiroshi Aida
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Patent number: 5648012Abstract: A piezoelectric ceramic composition comprising a perovskite compound which contains, as metal components, Pb, Sr, Zr, Ti, Nb, Cr, Y, Co and at least one element selected from La, Gd, Nd, Sm and Pr, and may further contain Sb or Na, wherein when the composition formula is expressed as,(Pb.sub.1-x-.alpha.-y Sr.sub.x Na.sub..alpha. M.sub.y).sub.a [(Nb.sub.b Y.sub.c Cr.sub.d Co.sub.e Sb.sub..beta.).sub.f Ti.sub.g Zr.sub.1-f-g ]O.sub.3,wherein M is at least one element selected from La, Gd, Nd, Sm and Pr, then, x, y, a, b, c, d, e, f, g, .alpha. and .beta. satisfy the following relationships, 0.005.ltoreq.x.ltoreq.0.08, 0.002.ltoreq.y.ltoreq.0.05, 0.95.ltoreq.a.ltoreq.1.05, 0.47.ltoreq.b.ltoreq.0.70, 0.02.ltoreq.c.ltoreq.0.31, 0.11.ltoreq.d.ltoreq.0.42, 0.01.ltoreq.e.ltoreq.0.12, 0.02.ltoreq.f.ltoreq.0.15, 0.46.ltoreq.g.ltoreq.0.52, 0.ltoreq..alpha..ltoreq.0.005, 0.ltoreq..beta..ltoreq.0.13, and b+c+d+e+.beta.=1.00.Type: GrantFiled: December 21, 1995Date of Patent: July 15, 1997Assignee: Kyocera CorporationInventors: Makoto Higashibeppu, Tomohiro Kawamoto, Tomonori Eguchi, Kenichi Yoshimura, Katsuhiko Onitsuka, Harumi Hayashi