Patents by Inventor Masaru Asai

Masaru Asai 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: 11980013
    Abstract: A radio wave-absorbing laminate film in which both the top surface and the bottom surface have superior transmission attenuation properties and reflection attenuation capabilities in extremely high-frequency wave bands and higher, and which exhibits excellent radio wave absorption properties even when extremely thin; a production method for the film; and an element containing the film. A radio wave-absorbing laminate film having radio wave-absorbing layers, the radio wave-absorbing laminate film including a center layer, two substrate layers, and two radio wave-absorbing layers, the center layer containing at least one metal layer, and the two substrate layers being laminated on both surfaces of the center layer.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: May 7, 2024
    Assignees: The University of Tokyo, Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Shin-ichi Ohkoshi, Asuka Namai, Marie Yoshikiyo, Takahiro Asai, Masaru Kuwahara
  • Patent number: 10425057
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 25.93?W/T?27.07, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: September 24, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Patent number: 10418964
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 20.78?W/T?22.10, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: September 17, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Patent number: 10411673
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 16.21?W/T?17.71, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: September 10, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Patent number: 10361675
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 25.90?W/T?27.17, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: July 23, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180212584
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 20.78?W/T?22.10, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 26, 2018
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180212585
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 25.93?W/T?27.07, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 26, 2018
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180212587
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 16.21?W/T?17.71, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180212588
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a center region, a second region and a third region that are adjacent to the center region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than a thickness of the first region, and 25.90?W/T?27.17, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Inventors: HIROYUKI YAMAMOTO, Hiroaki Kaida, Masaru Asai
  • Patent number: 10027309
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a first center region, a second region and a third region that are adjacent to the first region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than the thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than the thickness of the first region, and 16.18?W/T?16.97, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: July 17, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Patent number: 10009005
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a first center region, a second region and a third region that are adjacent to the first region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than the thickness of the first region, and 13.92?W/T?14.44, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 26, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masaru Asai, Hiroaki Kaida
  • Patent number: 9985603
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a first center region, a second region and a third region that are adjacent to the first region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than the thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than the thickness of the first region, and 12.26?W/T?13.02, where W is a length of a short side and T is a thickness.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: May 29, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180097503
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a first center region, a second region and a third region that are adjacent to the first region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than the thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than the thickness of the first region, and 16.18?W/T?16.97, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: November 17, 2017
    Publication date: April 5, 2018
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180097504
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a first center region, a second region and a third region that are adjacent to the first region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than the thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than the thickness of the first region, and 12.26?W/T?13.02, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: November 21, 2017
    Publication date: April 5, 2018
    Inventors: Hiroyuki Yamamoto, Hiroaki Kaida, Masaru Asai
  • Publication number: 20180076792
    Abstract: A rectangular quartz crystal blank having long sides substantially parallel to a Z? axis of the quartz crystal blank, and short sides substantially parallel to an X axis of the quartz crystal blank. The quartz crystal blank includes a first center region, a second region and a third region that are adjacent to the first region along a long-side direction, and a fourth region and a fifth region that are adjacent to the first region along a short-side direction. A thickness of the second region and a thickness of the third region are smaller than a thickness of the first region, and/or a thickness of the fourth region and a thickness of the fifth region are smaller than the thickness of the first region, and 13.92?W/T?14.44, where W is a length of a short side and T is a thickness.
    Type: Application
    Filed: November 17, 2017
    Publication date: March 15, 2018
    Inventors: MASARU ASAI, Hiroaki Kaida
  • Patent number: 9905747
    Abstract: A crystal vibration device where a crystal unit is supported on a case substrate in a cantilever manner by first and second conductive adhesive layers. The crystal unit has a length direction and is formed using a rectangular-plate-shaped crystal substrate and A>4.30t+0.16, where A (mm) represents a shorter distance among distances between a central axis of the crystal substrate and end portions of the first and second conductive adhesive layers on a central axis side, and t (?m) represents a thickness of the crystal substrate.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: February 27, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Masaru Asai
  • Patent number: 9509275
    Abstract: A quartz vibrating device that includes a quartz vibrator supported upon a case board in a cantilever state. The quartz vibrator is electrically connected to first and second mount electrodes by first and second conductive adhesive layers. A total S (mm2) of bonding surface areas of portions bonding the quartz vibrator to the case board by the first and second conductive adhesive layers is in a range of S??0.001t+0.22 when a thickness of a quartz substrate is t (?m).
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: November 29, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamamoto, Masaru Asai
  • Publication number: 20160027990
    Abstract: A crystal vibration device where a crystal unit is supported on a case substrate in a cantilever manner by first and second conductive adhesive layers. The crystal unit has a length direction and is formed using a rectangular-plate-shaped crystal substrate and A>4.30t+0.16, where A (mm) represents a shorter distance among distances between a central axis of the crystal substrate and end portions of the first and second conductive adhesive layers on a central axis side, and t (?m) represents a thickness of the crystal substrate.
    Type: Application
    Filed: September 30, 2015
    Publication date: January 28, 2016
    Inventors: Hiroyuki YAMAMOTO, Masaru ASAI
  • Publication number: 20150365068
    Abstract: A quartz vibrating device that includes a quartz vibrator supported upon a case board in a cantilever state. The quartz vibrator is electrically connected to first and second mount electrodes by first and second conductive adhesive layers. A total S (mm2) of bonding surface areas of portions bonding the quartz vibrator to the case board by the first and second conductive adhesive layers is in a range of S??0.001t+0.22 when a thickness of a quartz substrate is t (?m).
    Type: Application
    Filed: August 24, 2015
    Publication date: December 17, 2015
    Inventors: HIROYUKI YAMAMOTO, Masaru Asai