Patents by Inventor Tomoe Fujii

Tomoe Fujii 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: 11621696
    Abstract: A tuning fork-type vibration piece is provided, in which a cushioning portion is formed on the base of a package and allowed to contact parts for contact of arm portions which are any parts but their edges, and the parts for contact of the arm portions that contact the cushioning portion are electrodeless regions, which prevents the risk of frequency fluctuations caused by any electrode being chipped off by contact with the cushioning portion.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: April 4, 2023
    Assignee: DAISHINKU CORPORATION
    Inventors: Tomo Fujii, Hiroaki Yamashita
  • Patent number: 11239824
    Abstract: A tuning fork-type vibration piece is provided, in which a cushioning portion is formed on the base of a package to make contact with abutting portions of arm portions which are any parts but their edges, and the abutting portions of the arm portions allowed to contact the cushioning portion are electrodeless regions including no electrode, which prevents the risk of frequency fluctuations that may occur in case an electrode is chipped off by possible contact with the cushioning portion.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: February 1, 2022
    Assignee: Daishinku Corporation
    Inventors: Tomo Fujii, Hiroaki Yamashita
  • Publication number: 20200153408
    Abstract: A tuning fork-type vibration piece is provided, in which a cushioning portion is formed on the base of a package and allowed to contact parts for contact of arm portions which are any parts but their edges, and the parts for contact of the arm portions that contact the cushioning portion are electrodeless regions, which prevents the risk of frequency fluctuations caused by any electrode being chipped off by contact with the cushioning portion.
    Type: Application
    Filed: December 19, 2017
    Publication date: May 14, 2020
    Inventors: Tomo FUJII, Hiroaki YAMASHITA
  • Publication number: 20200144988
    Abstract: A tuning fork-type vibration piece is provided, in which a cushioning portion is formed on the base of a package to make contact with abutting portions of arm portions which are any parts but their edges, and the abutting portions of the arm portions allowed to contact the cushioning portion are electrodeless regions including no electrode, which prevents the risk of frequency fluctuations that may occur in case an electrode is chipped off by possible contact with the cushioning portion.
    Type: Application
    Filed: December 19, 2017
    Publication date: May 7, 2020
    Inventors: Tomo FUJII, Hiroaki YAMASHITA
  • Patent number: 10224898
    Abstract: This piezoelectric wafer has: a piezoelectric vibration piece; a frame portion that supports the piezoelectric vibration piece; and a coupling portion that couples the piezoelectric vibration piece to the frame portion. A pair of first and second metal bumps is formed in juxtaposition on the piezoelectric vibration piece. The coupling portion has slits extending in its width direction except in a bridge, i.e., a part of the coupling portion in its width direction. An end in the width direction of the bridge is distantly spaced from the first and second metal bumps both in a direction perpendicular to the width direction of the coupling portion with no overlap with these metal bumps.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 5, 2019
    Assignee: Daishinku Corporation
    Inventors: Tadataka Koga, Tomo Fujii, Kozo Shibutani, Satoru Ishino, Yoshinari Morimoto, Kazuki Otani
  • Patent number: 10211807
    Abstract: This piezoelectric wafer has: a piezoelectric vibration piece; a frame portion that supports the piezoelectric vibration piece; and a coupling portion that couples the piezoelectric vibration piece to the frame portion. The piezoelectric vibration piece is broken off at the coupling portion and separated from the piezoelectric wafer. On front and back surfaces of the coupling portion, grooved slits extending along a width direction of the coupling portion are formed except for parts of the coupling portion in the width direction. An electrode on at least one of front and back surfaces of the piezoelectric vibration piece is extracted to a frame-portion side of the piezoelectric wafer by way of the part of the coupling portion in the width direction.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: February 19, 2019
    Assignee: Daishinku Corporation
    Inventors: Tomo Fujii, Kozo Shibutani, Satoru Ishino, Yoshinari Morimoto, Tadataka Koga, Kazuki Otani
  • Patent number: 9548719
    Abstract: A tuning fork type piezoelectric vibration piece 2 includes a base portion 25 in which a piezoelectric vibration substrate has a connection area with an external element, and a pair of leg portions 21, 22 projecting from a first end face of the base portion. The pair of leg portions has vibrating portions 212, 222 equipped with drive electrodes, wide weight portions 211, 221 formed at tip ends of the vibrating portions, and connecting portions 213, 223 between the vibrating portions and the weight portions. The connecting portions have widening sections whose width increases exponentially from the vibrating portions to the weight portions. The length of the widening sections is greater than their width. The weight portions have constant-width parts whose width is fixed from their connecting positions with the connecting portions. The weight portions are free of drive electrodes.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: January 17, 2017
    Assignee: DAISHINKU CORPORATION
    Inventors: Yoshinobu Sakamoto, Satoru Ishino, Tomo Fujii
  • Publication number: 20160294353
    Abstract: This piezoelectric wafer has: a piezoelectric vibration piece; a frame portion that supports the piezoelectric vibration piece; and a coupling portion that couples the piezoelectric vibration piece to the frame portion. A pair of first and second metal bumps is formed in juxtaposition on the piezoelectric vibration piece. The coupling portion has slits extending in its width direction except in a bridge, i.e., a part of the coupling portion in its width direction. An end in the width direction of the bridge is distantly spaced from the first and second metal bumps both in a direction perpendicular to the width direction of the coupling portion with no overlap with these metal bumps.
    Type: Application
    Filed: September 17, 2014
    Publication date: October 6, 2016
    Inventors: Tadataka KOGA, Tomo FUJII, Kozo SHIBUTANI, Satoru ISHINO, Yoshinari MORIMOTO, Kazuki OTANI
  • Publication number: 20160260887
    Abstract: This piezoelectric wafer has: a piezoelectric vibration piece; a frame portion that supports the piezoelectric vibration piece; and a coupling portion that couples the piezoelectric vibration piece to the frame portion. The piezoelectric vibration piece is broken off at the coupling portion and separated from the piezoelectric wafer. On front and back surfaces of the coupling portion, grooved slits extending along a width direction of the coupling portion are formed except for parts of the coupling portion in the width direction. An electrode on at least one of front and back surfaces of the piezoelectric vibration piece is extracted to a frame-portion side of the piezoelectric wafer by way of the part of the coupling portion in the width direction.
    Type: Application
    Filed: September 17, 2014
    Publication date: September 8, 2016
    Inventors: Tomo Fujii, Kozo Shinutani, Satoru Ishino, Yoshinari Morimoto, Tadataka Koga, Kazuki Otani
  • Publication number: 20160006413
    Abstract: A tuning fork type piezoelectric vibration piece 2 includes a base portion 25 in which a piezoelectric vibration substrate has a connection area with an external element, and a pair of leg portions 21, 22 projecting from a first end face of the base portion. The pair of leg portions has vibrating portions 212, 222 equipped with drive electrodes, wide weight portions 211, 221 formed at tip ends of the vibrating portions, and connecting portions 213, 223 between the vibrating portions and the weight portions. The connecting portions have widening sections whose width increases exponentially from the vibrating portions to the weight portions. The length of the widening sections is greater than their width. The weight portions have constant-width parts whose width is fixed from their connecting positions with the connecting portions. The weight portions are free of drive electrodes.
    Type: Application
    Filed: May 27, 2014
    Publication date: January 7, 2016
    Applicant: DAISHINKU CORPORATION
    Inventors: Yoshinobu SAKAMOTO, Satoru ISHINO, Tomo FUJII
  • Patent number: 8400048
    Abstract: A tuning-fork type piezoelectric resonator plate includes: at least a plurality of leg portions serving as vibrating portions; a bonding portion bonded to the outside, and a base portion from which the leg portions and the bonding portion protrude. The plurality of leg portions protrude from a first end face of the base portion and are provided side-by-side on the first end face. The bonding portion protrude from a second end face located opposite the first end face of the base portion at a position located opposite a center position of the plurality of leg portions in a width direction of the first end face of the base portion. And, at least a base end portion of the bonding portion is used as a bond region that is bonded to the outside.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: March 19, 2013
    Assignee: Daishinku Corporation
    Inventors: Takashi Shirai, Yoshinobu Sakamoto, Syunsuke Satoh, Tomo Fujii, Masato Itoh, Yoshinari Morimoto
  • Publication number: 20110311790
    Abstract: The present invention provides a conductive connecting material for electrically connecting terminals of electronic members, which has a layered structure comprising: a curable resin composition containing a resin component and a compound having a flux function; and a metal foil selected from a solder foil and a tin foil. Further, the present invention provides a method for connecting terminals comprising: a placement step in which the conductive connecting material is placed between opposed terminals; a heating step in which the conductive connecting material is heated at a temperature, which is equal to or higher than the melting point of the metal foil, and at which the resin composition is not completely cured or the resin composition is softened; and a curing step/solidifying step in which the resin composition is cured or solidified.
    Type: Application
    Filed: September 3, 2009
    Publication date: December 22, 2011
    Applicant: SUMITOMO BAKELITE CO., LTD.
    Inventors: Wataru Okada, Michinori Yamamoto, Toshiaki Chuma, Kenzo Maejima, Tomohiro Kagimoto, Satoru Katsurayama, Tomoe Fujii
  • Publication number: 20110262697
    Abstract: A flexible substrate 10 of the present invention is the flexible substrate comprising a first resin film 1 having flux activity and a second resin film 2 different from the first resin film 1 laminated to said first resin film. The flexible substrate 10 is characterized in that the flexible substrate 10 is used by having a plurality of electronic components mounted on the surface of the first resin film 1, and thereafter having the respective electronic components and the flexible substrate 10 bonded at one time. The gel time of the first resin film 1 at 230° C. is 100 seconds or more and 600 seconds or less.
    Type: Application
    Filed: December 22, 2009
    Publication date: October 27, 2011
    Inventors: Satoru Katsurayama, Kenzou Maejima, Tomoe Fujii
  • Patent number: 8004157
    Abstract: An electrode forming region for providing lead electrodes (65a, 65b) is provided on a crystal resonator plate (2). Opposed side surfaces (67a, 67b) of a substrate (6) are formed and inclined in the same direction with respect to a front major surface (63). Also, an adhesion reinforcing portion (7) for reinforcing adhesion to a conductive adhesive (5) is provided in the electrode forming region for the lead electrodes (65a, 65b). For example, the adhesion reinforcing portion (7) is a notch portion which is cut and formed in the opposed side surfaces (67a, 67b). Thereby, an adhesion strength of the crystal resonator plate (2) and the conductive adhesive (5) is increased.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: August 23, 2011
    Assignee: Daishinku Corporation
    Inventors: Minoru Iizuka, Tatsuya Murakami, Syunsuke Satoh, Takashi Shirai, Hiroyuki Ishihara, Tomo Fujii
  • Publication number: 20110043079
    Abstract: A tuning-fork type piezoelectric resonator plate includes: at least a plurality of leg portions serving as vibrating portions; a bonding portion bonded to the outside, and a base portion from which the leg portions and the bonding portion protrude. The plurality of leg portions protrude from a first end face of the base portion and are provided side-by-side on the first end face. The bonding portion protrude from a second end face located opposite the first end face of the base portion at a position located opposite a center position of the plurality of leg portions in a width direction of the first end face of the base portion. And, at least a base end portion of the bonding portion is used as a bond region that is bonded to the outside.
    Type: Application
    Filed: September 18, 2009
    Publication date: February 24, 2011
    Applicant: DAISHINKU CORPORATION
    Inventors: Takashi Shirai, Yoshinobu Sakamoto, Syunsuke Satoh, Tomo Fujii, Masato Itoh, Yoshinari Morimoto
  • Publication number: 20080265717
    Abstract: An electrode forming region for providing lead electrodes (65a, 65b) is provided on a crystal resonator plate (2). Opposed side surfaces (67a, 67b) of a substrate (6) are formed and inclined in the same direction with respect to a front major surface (63). Also, an adhesion reinforcing portion (7) for reinforcing adhesion to a conductive adhesive (5) is provided in the electrode forming region for the lead electrodes (65a, 65b). For example, the adhesion reinforcing portion (7) is a notch portion which is cut and formed in the opposed side surfaces (67a, 67b). Thereby, an adhesion strength of the crystal resonator plate (2) and the conductive adhesive (5) is increased.
    Type: Application
    Filed: March 2, 2006
    Publication date: October 30, 2008
    Inventors: Minoru Iizuka, Tatsuya Murakami, Syunsuke Satoh, Takashi Shirai, Hiroyuki Ishihara, Tomo Fujii
  • Patent number: 7122945
    Abstract: A tuning fork resonator includes a base portion and leg portions extending from the base portion. A groove portion is formed in a major surface of each leg portion. An in-groove electrode is formed in the groove portion. A side surface electrode is formed on a side surface of the leg portion. The in-groove electrode and the side surface electrode are connected via a base portion electrode formed in the base portion. An outward extending groove electrode extending on a vertical wall facing the base portion and a leg portion tip-side major surface from the in-groove electrode of the groove portion, and a beside-groove electrode for leading the outward extending groove electrode on the leg portion major surface along beside the groove portion to the base portion electrode, are formed.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: October 17, 2006
    Assignee: Daishinku Corproation
    Inventors: Syunsuke Satoh, Tomo Fujii
  • Publication number: 20050285483
    Abstract: A tuning fork resonator comprises a base portion and leg portions extending from the base portion. A groove portion is formed in a major surface of each leg portion. An in-groove electrode is formed in the groove portion. A side surface electrode is formed on a side surface of the leg portion. The in-groove electrode and the side surface electrode are connected via a base portion electrode formed in the base portion. An outward extending groove electrode extending on a vertical wall facing the base portion and a leg portion tip-side major surface from the in-groove electrode of the groove portion, and a beside-groove electrode for leading the outward extending groove electrode on the leg portion major surface along beside the groove portion to the base portion electrode, are formed.
    Type: Application
    Filed: July 20, 2004
    Publication date: December 29, 2005
    Applicant: DAISHINKU CORPORATION
    Inventors: Syunsuke Satoh, Tomo Fujii