Patents by Inventor Shiro Murakami

Shiro Murakami 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).

  • Publication number: 20190267943
    Abstract: An oscillator includes a resonation element, a temperature sensitive element, a first package that houses the resonation element and the temperature sensitive element and is airtightly sealed, and a second package that houses the first package and is airtightly sealed. The first package includes a first base having a first recessed portion that is provided on one main surface side and a first lid that is joined to the first base so as to close an opening of the first recessed portion. The second package includes a second base having a second recessed portion that is provided on one main surface side and a second lid that is joined to the second base so as to close an opening of the second recessed portion.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Naohisa OBATA, Shinya AOKI, Shiro MURAKAMI
  • Patent number: 10340440
    Abstract: An electronic device includes a base material, a first metal film disposed on the base material and containing nitrogen and chromium, and a second metal film disposed on the first metal film and containing gold. In the first metal film, the number of nitrogen atoms may be between 20% to 100% of the number of chromium atoms. Further, the distribution of nitrogen atoms in the first metal film is larger in a third region sandwiched between a first region on the base material side of the first metal film and a second region on the second metal film side than in the first region and in the second region.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 2, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Tetsuya Otsuki, Shiro Murakami, Tomohiro Arai, Mitsuhiro Wada, Hiroshi Ito, Manabu Shiraki, Manabu Kondo, Muneyoshi Hama
  • Publication number: 20190199317
    Abstract: A vibrator device includes a base; and a vibrator element including a quartz crystal vibrator element attached to the base via a first metal bump, in which the first metal bump is disposed on a straight line inclined within a range of +55° to +65° or ?65° to ?55° with respect to an X axis of the quartz crystal constituting the quartz crystal vibrator element in plan view seen from a direction in which the base and the quartz crystal vibrator element are arranged.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Atsushi MATSUO, Ryuta NISHIZAWA, Shinya AOKI, Shiro MURAKAMI, Masashi SHIMURA
  • Publication number: 20190199315
    Abstract: A vibrator device includes a base; a circuit element attached to the base; a vibrator element attached to the circuit element; and a plurality of temperature sensors arranged in the circuit element, in which the circuit element includes a first connecting terminal connected to the base, a second connecting terminal connected to the vibrator element, and at least one circuit of an output buffer circuit, a power supply circuit, and a phase-locked loop circuit, and the shortest distance between each of the plurality of temperature sensors and the first connecting terminal or the second connecting terminal is shorter than the shortest distance between each of the temperature sensors and the at least one circuit.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shiro MURAKAMI, Atsushi MATSUO, Shinya AOKI, Masashi SHIMURA, Ryuta NISHIZAWA
  • Publication number: 20190195630
    Abstract: A vibrator device includes a base, a first relay substrate mounted on the base, a second relay substrate mounted on the first relay substrate, and a vibrator element mounted on the second relay substrate, in which the second relay substrate is disposed between the first relay substrate and the vibrator, and the second relay substrate includes a terminal that is electrically coupled to the vibrator element and is positioned in a region overlapping with the first relay substrate and not overlapping the vibrator element in a plan view.
    Type: Application
    Filed: December 26, 2018
    Publication date: June 27, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masashi SHIMURA, Atsushi MATSUO, Shinya AOKI, Shiro MURAKAMI, Ryuta NISHIZAWA
  • Publication number: 20190165756
    Abstract: A vibrator device includes a base, a relay substrate that is supported by the base, and a vibrator element that is supported by the relay substrate. In addition, the vibrator element includes a vibration substrate formed of a piezoelectric single-crystalline body and an excitation electrode disposed on the vibration substrate. In addition, the relay substrate includes a substrate formed of the piezoelectric single-crystalline body. A crystal axis of the substrate and a crystal axis of the vibration substrate are shifted from each other.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 30, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shiro MURAKAMI, Atsushi MATSUO, Shinya AOKI, Masashi SHIMURA, Ryuta NISHIZAWA
  • Publication number: 20190165760
    Abstract: A vibrator device includes abase, a circuit element that is attached to the base, and a vibrator element that is arranged at an active surface of the circuit element and is attached to the circuit element, and the circuit element includes a terminal for frequency adjustment that is used for frequency adjustment of the vibrator element and is disposed in a region that does not overlap the vibrator element when viewed in a plan view of the active surface.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masashi SHIMURA, Atsushi MATSUO, Shinya AOKI, Shiro MURAKAMI, Ryuta NISHIZAWA
  • Publication number: 20190165759
    Abstract: A vibration device including a vibrator, a circuit component, a relay substrate disposed between the vibrator and the circuit component, a package that accommodates the vibrator, the circuit component, and the relay substrate, a first metal bump that joins the circuit component to the package, a second metal bump that joins the relay substrate to the circuit component, and a third metal bump that joins the vibrator to the relay substrate.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 30, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryuta NISHIZAWA, Shiro MURAKAMI, Shinya AOKI, Atsushi MATSUO, Masashi SHIMURA
  • Publication number: 20180274922
    Abstract: A vibration device includes a vibration element that has a plurality of terminals, a base that has a plurality of electrical connection terminals, and a board that has a wiring portion which electrically connects the plurality of electrical connection terminal and the plurality of terminals to each other, and that supports the vibration element with respect to the base. The board has a base fixing portion fixed to the base, a vibration element mounting portion on which the vibration element is mounted, and at least one beam portion which couples the base fixing portion and the vibration element mounting portion to each other. At least the one beam portion has a first portion which extends in a first direction and a second portion which extends in a second direction intersecting the first direction.
    Type: Application
    Filed: March 22, 2018
    Publication date: September 27, 2018
    Inventors: Ryuta NISHIZAWA, Shiro MURAKAMI, Keiichi YAMAGUCHI, Keiji NAKAGAWA
  • Publication number: 20160293827
    Abstract: An electronic device includes a base material, a first metal film disposed on the base material and containing nitrogen and chromium, and a second metal film disposed on the first metal film and containing gold. In the first metal film, the number of nitrogen atoms may be between 20% to 100% of the number of chromium atoms. Further, the distribution of nitrogen atoms in the first metal film is larger in a third region sandwiched between a first region on the base material side of the first metal film and a second region on the second metal film side than in the first region and in the second region.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 6, 2016
    Inventors: Tetsuya OTSUKI, Shiro MURAKAMI, Tomohiro ARAI, Mitsuhiro WADA, Hiroshi ITO, Manabu SHIRAKI, Manabu KONDO, Muneyoshi HAMA
  • Publication number: 20140300252
    Abstract: A piezoelectric resonating element includes a piezoelectric substrate having a rectangular vibrating portion and a thick-walled portion, excitation electrodes and, and lead electrodes. The thick-walled portion includes a fourth thick-walled portion, a third thick-walled portion, a first thick-walled portion, and a second thick-walled portion. The third thick-walled portion includes a third slope portion and a third thick-walled body, and at least one slit is formed in the third thick-walled portion.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Inventors: Osamu ISHII, Shiro MURAKAMI
  • Patent number: 8791766
    Abstract: A piezoelectric resonating element includes a piezoelectric substrate having a rectangular vibrating portion and a thick-walled portion, excitation electrodes and, and lead electrodes. The thick-walled portion includes a fourth thick-walled portion, a third thick-walled portion, a first thick-walled portion, and a second thick-walled portion. The third thick-walled portion includes a third slope portion and a third thick-walled body, and at least one slit is formed in the third thick-walled portion.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: July 29, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Ishii, Shiro Murakami
  • Patent number: 8638022
    Abstract: A vibrating element includes: an element plate that has a vibrating portion that performs thickness-shear vibration, a peripheral portion that is integrally formed with the vibrating portion, and a protruding portion that is provided at the peripheral portion; and an excitation electrode that is provided at the vibrating portion. When a side length of the vibrating portion is Mx, when a side length of the excitation electrode is Ex, and when a wavelength of flexure vibrations of the element plate is ?, the relationship of (Mx?Ex)/2=?/2, and Mx/2={(A/2)+(¼)}? (where, A is a positive integer) is satisfied, and when a length of the protruding portion is Dx, and when a distance between the vibrating portion and the protruding portion is Sx, the relationship of Dx=?/2)×m, and (?/2)×n?0.1??Sx?(?/2)×n+0.1? (where m and n are positive integers) is satisfied.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 28, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Go Yamashita, Kenji Komine, Shiro Murakami
  • Publication number: 20130307377
    Abstract: A vibrating element includes: an element plate that has a vibrating portion that performs thickness-shear vibration, a peripheral portion that is integrally formed with the vibrating portion, and a protruding portion that is provided at the peripheral portion; and an excitation electrode that is provided at the vibrating portion. When a side length of the vibrating portion is Mx, when a side length of the excitation electrode is Ex, and when a wavelength of flexure vibrations of the element plate is ?, the relationship of (Mx?Ex)/2=?/2, and Mx/2={(A/2)+(¼)}? (where, A is a positive integer) is satisfied, and when a length of the protruding portion is Dx, and when a distance between the vibrating portion and the protruding portion is Sx, the relationship of Dx=?/2)×m, and (?/2)×n?0.1??Sx?(?/2)×n+0.1? (where m and n are positive integers) is satisfied.
    Type: Application
    Filed: July 26, 2013
    Publication date: November 21, 2013
    Applicant: Seiko Epson Corporation
    Inventors: Go YAMASHITA, Kenji KOMINE, Shiro MURAKAMI
  • Patent number: 8536761
    Abstract: A piezoelectric resonator includes: a piezoelectric plate having a vibrating portion surrounded by a peripheral portion; and an excitation electrode on the piezoelectric plate, wherein long sides of the vibrating portion and excitation electrode are parallel to a piezoelectric plate long side. Assuming a piezoelectric plate long side length X, a vibrating portion thickness t, a vibrating portion long side length Mx, an excitation electrode long side length Ex, and a piezoelectric plate flexure vibration wavelength ?, ?/2=(1.332/f)?0.0024 (piezoelectric resonator resonance frequency f), (Mx?Ex)/2=?/2, Mx/2={(A/2)+(1/4)}? (where, A is a positive integer), and X?20t. A protruding portion is disposed on a vibrating portion extension line and parallel to a vibrating portion short side. Assuming a protruding portion length Dx, Dx=(?/2)×m (where, m is a positive integer). Assuming a distance Sx between the vibrating and protruding portions, Sx=(?/2)×n±0.1? (where, n is a positive integer).
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: September 17, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Go Yamashita, Kenji Komine, Shiro Murakami
  • Publication number: 20130043960
    Abstract: A piezoelectric resonating element includes a piezoelectric substrate having a rectangular vibrating portion and a thick-walled portion, excitation electrodes and, and lead electrodes. The thick-walled portion includes a fourth thick-walled portion, a third thick-walled portion, a first thick-walled portion, and a second thick-walled portion. The third thick-walled portion includes a third slope portion and a third thick-walled body, and at least one slit is formed in the third thick-walled portion.
    Type: Application
    Filed: August 16, 2012
    Publication date: February 21, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Osamu ISHII, Shiro MURAKAMI
  • Publication number: 20110095657
    Abstract: A piezoelectric resonator includes: a piezoelectric plate having a vibrating portion surrounded by a peripheral portion; and an excitation electrode on the piezoelectric plate, wherein long sides of the vibrating portion and excitation electrode are parallel to a piezoelectric plate long side. Assuming a piezoelectric plate long side length X, a vibrating portion thickness t, a vibrating portion long side length Mx, an excitation electrode long side length Ex, and a piezoelectric plate flexure vibration wavelength ?, ?/2=(1.332/f)?0.0024 (piezoelectric resonator resonance frequency f), (Mx?Ex)/2=?/2, Mx/2={(½)+(¼)}? (where, I=1, 2, 3, . . . ), and X?20 t. A protruding portion is disposed on a vibrating portion extension line and parallel to a vibrating portion short side. Assuming a protruding portion length Dx, Dx=(?/2)×m (where, m=1, 2, 3, . . . ). Assuming a distance Sx between the vibrating and protruding portions, Sx=(?/2)×n±0.1? (where, n=1, 2, 3, . . . ).
    Type: Application
    Filed: October 21, 2010
    Publication date: April 28, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Go YAMASHITA, Kenji KOMINE, Shiro MURAKAMI
  • Patent number: 7061355
    Abstract: A ferrite core for use in coupling transformers and distributing transformers in CATV equipments such as couplers, distributors and amplifiers, the ferrite core being made of a ferrite having a saturation magnetostriction |?S| of 8×10?6 or less in an absolute value and an initial permeability ?i of 300 or more.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: June 13, 2006
    Assignee: Hitachi Metals, Ltd.
    Inventors: Satoru Tanaka, Norikazu Koyuhara, Makoto Kadowaki, Yoshihito Yoshikawa, Shiro Murakami
  • Patent number: 6756329
    Abstract: A synthetic fiber capable of absorbing and disabsorbing moisture comprising a component capable of absorbing and disabsorbing moisture and a fiber-forming polymer. The fiber of the present invention has a moisture absorption of 1.5% or more when it is allowed to reach a moisture equilibrium under the circumstance of 25° C.×60%RH and then is allowed to stand for 30 min. under the circumstance of 34° C.×90%RH, and has a moisture disabsorption of 2% or more when it is allowed to reach a moisture equilibrium under the circumstance of 34° C.×90%RH and then is allowed to stand for 30 min. under the circumstance of 25° C.×60%RH. The fiber also has a value of −1 to 5 in terms of b value in the CIE-LAB color system when it is allowed to stand for 30 days.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: June 29, 2004
    Assignee: Unitika Ltd.
    Inventors: Mitsuhiro Umino, Kunio Akasaki, Yoshiaki Kurushima, Kazuyuki Ono, Hajime Yamaguchi, Shigemitsu Murase, Shiro Murakami, Kuzuaki Taruishi
  • Publication number: 20040113742
    Abstract: A ferrite core for use in coupling transformers and distributing transformers in CATV equipments such as couplers, distributors and amplifiers, the ferrite core being made of a ferrite having a saturation magnetostriction |&lgr;s| of 8×10−6 or less in an absolute value and an initial permeability &mgr;i of 300 or more.
    Type: Application
    Filed: August 28, 2003
    Publication date: June 17, 2004
    Applicant: HITACHI METALS, LTD.
    Inventors: Satoru Tanaka, Norikazu Koyuhara, Makoto Kadowaki, Yoshihito Yoshizawa, Shiro Murakami