Patents by Inventor Kazuya Kitada

Kazuya Kitada 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: 9287491
    Abstract: A piezoelectric element 300 includes a first electrode 60, a piezoelectric layer 70 arranged on the first electrode 60, and a second electrode 80 arranged on the piezoelectric layer 70, in which the piezoelectric layer 70 includes a composite oxide which has a perovskite structure and the composite oxide has a composition represented as a mixed crystal of bismuth ferrate and strontium titanate.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: March 15, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Kazuya Kitada
  • Patent number: 9276193
    Abstract: A piezoelectric material contains a first component that is a rhombohedral crystal that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1, a second component that is a crystal other than a rhombohedral crystal that is configured to have a complex oxide with the perovskite structure and Curie temperature Tc2, and a third component that is configured to have a complex oxide with the perovskite structure in which the component is formed as the same crystal system as the second component and Curie temperature Tc3, in which Tc1 is higher than Tc2, and Tc3 is equal to or higher than Tc1.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: March 1, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Koji Sumi, Kazuya Kitada, Tomohiro Sakai, Yasuaki Hamada, Tetsuya Isshiki, Satoshi Kimura, Akio Ito, Tsuneo Handa
  • Publication number: 20150373275
    Abstract: An image display apparatus according to the present invention, includes: a first acquisition unit configured to acquire captured image data from an image capturing apparatus; a second acquisition unit configured to acquire operation information representing a user operation performed on the image capturing apparatus, from the image capturing apparatus; an image processing unit configured to generate processed image data by carrying out image processing corresponding to the operation information acquired by the second acquisition unit on the captured image data acquired by the first acquisition unit; and a display unit configured to display a processed image based on the processed image data on a screen.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 24, 2015
    Inventors: Kazuya Kitada, Osamu Yonishi
  • Patent number: 9190601
    Abstract: A piezoelectric material contains a first component that is a rhombohedral crystal that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1 and a second component that is a crystal other than a rhombohedral crystal that is configured to have a complex oxide with the perovskite structure and Curie temperature Tc2, in which |Tc1?Tc2| is equal to or less than 50° C.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 17, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Koji Sumi, Kazuya Kitada, Tomohiro Sakai, Yasuaki Hamada, Tetsuya Isshiki, Satoshi Kimura, Akio Ito, Tsuneo Handa
  • Publication number: 20150236243
    Abstract: A piezoelectric element 300 includes a first electrode 60, a piezoelectric layer 70 arranged on the first electrode 60, and a second electrode 80 arranged on the piezoelectric layer 70, in which the piezoelectric layer 70 includes a composite oxide which has a perovskite structure and the composite oxide has a composition represented as a mixed crystal of bismuth ferrate and strontium titanate.
    Type: Application
    Filed: January 19, 2015
    Publication date: August 20, 2015
    Inventor: Kazuya KITADA
  • Patent number: 9100530
    Abstract: An image processing apparatus includes an identifier identifying, for each pixel in the frame image, minimum pixel values for each color component from pixel values of surrounding pixels for each color component. The surrounding pixels are positioned around the pixel. The identifier also identifies, as a common pixel value, a minimum value in the minimum pixel values identified for each color component. The apparatus further includes a generator generating a preprocessed image which can be obtained by replacing a pixel value of each pixel in the frame image with the common pixel value identified for the pixel by the identifier, a low pass filter generating a first subframe image by applying a low-pass filter to the preprocessed image, and a subtractor generating, as a second subframe image, a difference image between the frame image and the first subframe image.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: August 4, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuya Kitada, Eisaku Tatsumi, Makiko Mori
  • Publication number: 20150138281
    Abstract: A piezoelectric element includes: a first electrode; a piezoelectric body layer which is provided on the first electrode; and a second electrode which is provided on the piezoelectric body layer, the piezoelectric body layer is made of a composite oxide with a perovskite structure, which contains bismuth, barium, iron, titanium, and strontium, and the content of strontium with respect to barium is equal to or greater than 5 mol % and equal to or less than 18 mol %.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 21, 2015
    Inventor: Kazuya KITADA
  • Patent number: 8991984
    Abstract: A liquid ejecting head that discharges a liquid through a nozzle aperture includes a piezoelectric element. The piezoelectric element includes a piezoelectric layer and a first and a second electrode provided for the piezoelectric layer. The piezoelectric layer is made of a complex oxide containing bismuth, iron, barium and titanium and having a perovskite structure. The iron content in the piezoelectric layer is higher at the interface with the second electrode than other portions in the thickness direction of the piezoelectric layer.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: March 31, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Kazuya Kitada, Tsutomu Asakawa
  • Publication number: 20150002585
    Abstract: A piezoelectric material contains a first component that is a rhombohedral crystal that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1, a second component that is a crystal other than a rhombohedral crystal that is configured to have a complex oxide with the perovskite structure and Curie temperature Tc2, and a third component that is configured to have a complex oxide with the perovskite structure in which the component is formed as the same crystal system as the second component and Curie temperature Tc3, in which Tc1 is higher than Tc2, and Tc3 is equal to or higher than Tc1.
    Type: Application
    Filed: March 26, 2014
    Publication date: January 1, 2015
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Koji SUMI, Kazuya KITADA, Tomohiro SAKAI, Yasuaki HAMADA, Tetsuya ISSHIKI, Satoshi KIMURA, Akio ITO, Tsuneo HANDA
  • Publication number: 20150002586
    Abstract: A piezoelectric material contains a first component that is a rhombohedral crystal and that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1, a second component that is a crystal other than a rhombohedral crystal and that is configured to have a complex oxide with a perovskite structure and Curie temperature e Tc2, and a third component that is a rhombohedral crystal and that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc3 different from the first component, and in which Tc2 is higher than Tc1, Tc3 is equal to or higher than Tc2, and a value of (0.1×Tc1+0.9×Tc2) is equal to or lower than 280° C.
    Type: Application
    Filed: March 26, 2014
    Publication date: January 1, 2015
    Applicant: Seiko Epson Corporation
    Inventors: Koji SUMI, Kazuya KITADA, Tomohiro SAKAI, Yasuaki HAMADA, Tetsuya ISSHIKI, Satoshi KIMURA, Akio ITO, Tsuneo HANDA
  • Publication number: 20150002584
    Abstract: A piezoelectric material contains a first component that is a rhombohedral crystal that is configured to have a complex oxide with a perovskite structure and Curie temperature Tc1 and a second component that is a crystal other than a rhombohedral crystal that is configured to have a complex oxide with the perovskite structure and Curie temperature Tc2, in which |Tc1?Tc2| is equal to or less than 50° C.
    Type: Application
    Filed: March 26, 2014
    Publication date: January 1, 2015
    Applicant: Seiko Epson Corporation
    Inventors: Koji SUMI, Kazuya KITADA, Tomohiro SAKAI, Yasuaki HAMADA, Tetsuya ISSHIKI, Satoshi KIMURA, Akio ITO, Tsuneo HANDA
  • Patent number: 8876259
    Abstract: Provided is a piezoelectric element including a first electrode, a piezoelectric layer, and a second electrode, wherein the piezoelectric layer is formed of a complex oxide having a perovskite structure containing bismuth, barium, iron and titanium, binding energy of C—C and C—H states of a peak due to C 1s in an X-ray photoelectron spectroscopy measurement is standardized as 284.8 eV, when a peak obtained in a range of a binding energy of 775 eV or more and 785 eV or less is separated using a Gauss function, the binding energy has the peak in 779.0±0.8 eV, and one or more peak having intensity lower than that of the peak is included at the high binding energy side.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: November 4, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Kazuya Kitada, Masayuki Omoto
  • Patent number: 8814329
    Abstract: A liquid ejecting head for discharging liquid from nozzle openings is provided. The liquid ejecting head includes a piezoelectric film and piezoelectric element with electrodes on the piezoelectric film. The piezoelectric film includes barium titanate-based composition having a perovskite structure containing barium, titanium, and copper less than or equal to 3 mol % of titanium amount.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: August 26, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Xiaoxing Wang, Kazuya Kitada
  • Patent number: 8789929
    Abstract: Provided is a piezoelectric element including a first electrode, a piezoelectric layer, and a second electrode, wherein the piezoelectric layer is formed of a complex oxide having a perovskite structure containing bismuth, barium, iron and titanium, binding energy of C—C and C—H states of a peak due to C 1s in an X-ray photoelectron spectroscopy measurement is standardized as 284.8 eV, when a peak obtained in a range of the binding energy of 775 eV or more and 785 eV or less is separated using a Gauss function, the binding energy has the peak in 780.5±0.8 eV, and one or more peak having intensity lower than that of the peak is included at a low binding energy side.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: July 29, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Kazuya Kitada
  • Patent number: 8764167
    Abstract: Provided is a method of manufacturing a liquid ejecting head including a pressure generating chamber communicating with a nozzle opening and a piezoelectric element including a piezoelectric layer and an electrode, the method including: forming a first piezoelectric precursor film containing Bi and Fe, or Ba and Ti; forming a first piezoelectric layer by heating and crystallizing the first piezoelectric precursor film; forming a second piezoelectric precursor film further containing at least one selected from Li, B, and Cu on the first piezoelectric layer, in addition to Bi and Fe, or Ba and Ti contained in the first piezoelectric precursor film; and forming the piezoelectric layer by heating and crystallizing the first piezoelectric layer and the second piezoelectric precursor film.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: July 1, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Kazuya Kitada, Xiaoxing Wang, Koji Sumi
  • Patent number: 8721052
    Abstract: A piezoelectric element comprises a piezoelectric member made of a complex oxide and an electrode which contains platinum. The complex oxide contains potassium sodium niobate and bismuth ferrate. The molar ratio of the bismuth ferrate to the sum of the potassium sodium niobate and the bismuth ferrate is in the range of 3% to 10%. And the molar ratio of the sum of potassium and sodium to niobium is in the range of 103% to 115%.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: May 13, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Kazuya Kitada
  • Patent number: 8721051
    Abstract: Provided is a piezoelectric element comprising a piezoelectric layer and an electrode. The piezoelectric layer includes a solid solution of bismuth lanthanum titanate zincate and lead titanate. The molar ratio of the bismuth lanthanum titanate zincate to the lead titanate in the piezoelectric layer is 0.39 or more and 0.61 or less.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: May 13, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Tomokazu Kobayashi, Kazuya Kitada
  • Patent number: 8662644
    Abstract: A piezoelectric element comprising a piezoelectric layer containing bismuth, lanthanum iron manganese and titanium and a electrode formed above the piezoelectric layer.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: March 4, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Masahisa Nawano, Kazuya Kitada
  • Publication number: 20140055510
    Abstract: A display apparatus according to the present invention includes: a light-emitting unit of which emission brightness is controllable for each divided region of a screen; a display panel which displays an image on the screen by transmitting light from the light-emitting unit at a transmittance in accordance with an image signal; and a control unit which controls the emission brightness of the light-emitting unit for each divided region, wherein the control unit controls emission brightness for a mixed divided region based on an image signal of the mixed divided region, and controls emission brightness for a monochromatic divided region based on a representative value of emission brightness of a plurality of the mixed divided regions.
    Type: Application
    Filed: August 20, 2013
    Publication date: February 27, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kazuya Kitada
  • Patent number: 8657417
    Abstract: A piezoelectric element, comprises a piezoelectric layer consisting of a complex oxide represented as a mixed crystal including bismuth ferrate and barium titanate and an electrode provided to the piezoelectric layer. The piezoelectric layer contains 1 to 15 mol % of lithium relative to the complex oxide.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: February 25, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Kazuya Kitada