Patents by Inventor Masaru Kanazawa

Masaru Kanazawa 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: 20170098886
    Abstract: A notch antenna is a bored-through groove formed on a housing, is open on one end at an edge of the housing, and is closed on the other end. A slot antenna is a bored-through groove closed on both ends, is adjacent to the notch antenna on the housing, and extends in the extending direction of the other end of the notch antenna. A feeding point is disposed in the vicinity of the slot antenna on the housing on the opposite side to the other end portion of the notch antenna. An outer conductor is disposed in the vicinity of the other end of the notch antenna on the housing on the opposite side to the slot antenna.
    Type: Application
    Filed: September 12, 2016
    Publication date: April 6, 2017
    Applicant: FUJITSU LIMITED
    Inventor: MASARU KANAZAWA
  • Patent number: 9509039
    Abstract: A portable terminal includes a metal frame on which an LCD is mounted, the metal frame being grounded; and an antenna element that includes a feed point between a first end and a second end and is formed from the same piece of sheet metal used for the metal frame, the first end of the antenna element being connected to the metal frame.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: November 29, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yoshihisa Kadosawa, Masaru Kanazawa
  • Patent number: 8843185
    Abstract: A slide-type wireless terminal apparatus includes a first casing and a second casing slidable relative to the first casing. The wireless terminal apparatus includes a first circuit board which is provided in the first casing, an antenna which is provided in the first casing, a second circuit board which is provided in the second casing, a sliding member which is disposed between the first circuit board and the second circuit board, the sliding member including a portion which faces the antenna, the sliding member having electrical conductivity and being electrically connected to the first circuit board, and a guide member which is provided in the second casing, the guide member being for guiding the sliding member such that the sliding member slides relative to the guiding member.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 23, 2014
    Assignee: Fujitsu Limited
    Inventors: Masaru Kanazawa, Zhao Liu, Kouji Soekawa
  • Patent number: 8711042
    Abstract: A mobile communication device equipped with a microphone, a receiver, a first circuit board which is provided with an antenna at the microphone side and a second circuit board opposing to the first circuit board, wherein the antenna has a first antenna part which is extended parallel to the edge of the first circuit board and a second antenna part which is extended from a free end of the first antenna part towards the second circuit board. The end of the second antenna part may also be extended in a direction parallel to the second circuit board so as to form a third antenna part. As a result, even if a user uses the device in a state with the receiver pressed against the ear, the antenna will not be affected by the user body and the antenna characteristics will not deteriorate.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: April 29, 2014
    Assignee: Fujitsu Limited
    Inventors: Kazutoshi Taniyama, Masaru Kanazawa
  • Patent number: 8711576
    Abstract: An electronic apparatus which includes a hinge module includes a first housing in which a window unit is formed in a holding unit which holds the hinge module, a second housing which is joined to the first housing, and a substrate holding member which is arranged between the first housing and the second housing, and wherein the substrate holding member passes through the window unit of the first housing and includes a locking unit which locks the hinge module by being pressed by the second housing.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: April 29, 2014
    Assignee: Fujitsu Limited
    Inventors: Tsukasa Goro, Koji Nakakubo, Satoshi Seino, Masaru Kanazawa
  • Patent number: 8686915
    Abstract: An antenna device includes a board made of dielectric material, having first and second power feed parts; a first antenna element connected to the first power feed part, using a first wavelength; a second antenna element connected to the second power feed part, using a second wavelength; a ground formed on the board, having a first side and a second side respectively having different lengths and extending in different directions, the length of the first side, compared with the length of second side, which is approximate to a ¼ length of the first wavelength and a ¼ length of the second wavelength; and a parasitic element connected to the ground, which is not parallel to the first side of the ground, a length of the parasitic element is approximate to ¼ length of the second wavelength and an interval of the parasitic element and the second power feed part is less than equals the ¼ length of the second wavelength.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: April 1, 2014
    Assignee: Fujitsu Limited
    Inventors: Masaru Kanazawa, Kouji Soekawa
  • Publication number: 20140015715
    Abstract: A portable terminal includes a metal frame on which an LCD is mounted, the metal frame being grounded; and an antenna element that includes a feed point between a first end and a second end and is formed from the same piece of sheet metal used for the metal frame, the first end of the antenna element being connected to the metal frame.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 16, 2014
    Inventors: Yoshihisa Kadosawa, Masaru Kanazawa
  • Patent number: 8483783
    Abstract: A folding type portable radio machine, includes a chassis part formed by a first chassis and a second chassis, the second chassis being foldably connected to the first chassis. The chassis part includes a conductive part having conductivity whose full length is an approximately half wave length (?/2) of a using frequency of the radio machine, and an electric notch.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: July 9, 2013
    Assignee: Fujitsu Limited
    Inventors: Masaru Kanazawa, Yoshiyuki Yamashita, Tabito Tonooka, Masatomo Mori, Hisamitsu Takagi
  • Patent number: 8437709
    Abstract: A wireless apparatus includes a display, a display case encasing the display, a body supporting the display case capable of rolling sideways the display, a first antenna element arranged in the display case, a second antenna element arranged in crossed direction of the first antenna element direction in the display case, and an antenna switch configured to switch between the first antenna and the second antenna in accordance with rolling positions of the display case with the body.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: May 7, 2013
    Assignee: Fujitsu Limited
    Inventor: Masaru Kanazawa
  • Publication number: 20120218153
    Abstract: A mobile communication device equipped with a microphone, a receiver, a first circuit board which is provided with an antenna at the microphone side and a second circuit board opposing to the first circuit board, wherein the antenna has a first antenna part which is extended parallel to the edge of the first circuit board and a second antenna part which is extended from a free end of the first antenna part towards the second circuit board. The end of the second antenna part may also be extended in a direction parallel to the second circuit board so as to form a third antenna part. As a result, even if a user uses the device in a state with the receiver pressed against the ear, the antenna will not be affected by the user body and the antenna characteristics will not deteriorate.
    Type: Application
    Filed: December 8, 2011
    Publication date: August 30, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Kazutoshi Taniyama, Masaru Kanazawa
  • Publication number: 20120154225
    Abstract: A wireless communication device includes: a first case having an antenna; and a second case connected to the first case, and having a first conductor at a position that is opposite to the antenna when the first case and the second case overlay each other, a second conductor at a position different from the position at which the first conductor is disposed, and a switch that switches an electrical connection state of the first conductor and the second conductor, wherein the switch switches the electrical connection state to disconnect state when the switch detects that the first case and the second case overlay each other.
    Type: Application
    Filed: November 18, 2011
    Publication date: June 21, 2012
    Applicant: FUJITSU LIMITED
    Inventor: Masaru KANAZAWA
  • Publication number: 20120115336
    Abstract: A slide-type wireless terminal apparatus includes a first casing and a second casing slidable relative to the first casing. The wireless terminal apparatus includes a first circuit board which is provided in the first casing, an antenna which is provided in the first casing, a second circuit board which is provided in the second casing, a sliding member which is disposed between the first circuit board and the second circuit board, the sliding member including a portion which faces the antenna, the sliding member having electrical conductivity and being electrically connected to the first circuit board, and a guide member which is provided in the second casing, the guide member being for guiding the sliding member such that the sliding member slides relative to the guiding member.
    Type: Application
    Filed: September 22, 2011
    Publication date: May 10, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Masaru Kanazawa, Zhao Liu, Kouji Soekawa
  • Patent number: 8165623
    Abstract: A radio communication device that outputs an alarm when a reception level of a radio wave from a wireless unit is less than a threshold value, includes a reception level measuring section for measuring the reception level of the radio wave transmitted from the wireless unit at certain times. A threshold value setting section for setting a first threshold value or a second threshold value less than the first threshold value based on a difference between the reception level of the radio wave measured a previous time and the reception level of the radio wave measured a subsequent time. An alarm output requesting section for causing an alarm output section to output an alarm if the reception level of the radio wave measured a subsequent time is less than the first threshold value or the second threshold value.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: April 24, 2012
    Assignee: Fujitsu Limited
    Inventors: Masaru Kanazawa, Tabito Tonooka, Masatomo Mori
  • Publication number: 20120050129
    Abstract: An antenna device includes a board made of dielectric material, having first and second power feed parts; a first antenna element connected to the first power feed part, using a first wavelength; a second antenna element connected to the second power feed part, using a second wavelength; a ground formed on the board, having a first side and a second side respectively having different lengths and extending in different directions, the length of the first side, compared with the length of second side, which is approximate to a ¼ length of the first wavelength and a ¼ length of the second wavelength; and a parasitic element connected to the ground, which is not parallel to the first side of the ground, a length of the parasitic element is approximate to ¼ length of the second wavelength and an interval of the parasitic element and the second power feed part is less than equals the ¼ length of the second wavelength.
    Type: Application
    Filed: April 25, 2011
    Publication date: March 1, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Masaru Kanazawa, Kouji Soekawa
  • Publication number: 20120001822
    Abstract: A wireless communication apparatus includes a first housing, a second housing which is openably and closably connected to the first housing through a hinge, a first conductor part which is arranged on the first housing, a second conductor and an antenna element, which are arranged on the second housing and an antenna switching part that makes the first conductor part, the second conductor part, and the antenna element serve as a dipole antenna when the first housing and the second housing are in an open state, and makes the antenna element serve as a monopole antenna when the first conductor and the second conductor are in a closed state.
    Type: Application
    Filed: June 23, 2011
    Publication date: January 5, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Zhao LIU, Masaru KANAZAWA, Masatomo MORI
  • Publication number: 20110222260
    Abstract: An electronic apparatus which includes a hinge module includes a first housing in which a window unit is formed in a holding unit which holds the hinge module, a second housing which is joined to the first housing, and a substrate holding member which is arranged between the first housing and the second housing, and wherein the substrate holding member passes through the window unit of the first housing and includes a locking unit which locks the hinge module by being pressed by the second housing.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 15, 2011
    Applicant: FUJITSU LIMITED
    Inventors: Tsukasa GORO, Koji Nakakubo, Satoshi Seino, Masaru Kanazawa
  • Patent number: 7969381
    Abstract: A wireless device has a housing, a patch antenna, and an open/shut sensing unit which senses the open/shut state of the housing and forms an open/shut signal indicating the open/shut state. The patch antenna has a first element which corresponds to a first polarized wave, a second element which corresponds to a second polarized wave and is to be added to the first element, and a switching unit. The switching unit disconnects and connects the second element from and to the first element based on the open/shut signal to make the patch antenna suitable for the first or second polarized wave.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: June 28, 2011
    Assignee: Fujitsu Limited
    Inventors: Masaru Kanazawa, Tabito Tonooka
  • Patent number: 7940219
    Abstract: An antenna adaptable to a plurality of frequencies is comprised of a first element that is connected to a feeding point (feeding portion) for operation and a second element that is connected to a grounding point (grounding portion) in proximity to the first element to be operated by coupling feeding with the first element and is configured to be operated at either or both of a first frequency and a second frequency higher than the first frequency.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: May 10, 2011
    Assignee: Fujitsu Limited
    Inventors: Kouji Soekawa, Masaru Kanazawa
  • Publication number: 20100214189
    Abstract: An antenna for operation at a frequency band includes: an antenna element; a first and second conductor portions each extending along a longitudinal axis for selectively serving as a ground with respect to the antenna element, each of the first and second conductor portions having ¼ length of the wavelength at the frequency band, each of the first and second conductor portions having a longitudinal axis different in direction from the other; and a controller for selecting one of the first and second conductor portions so as to operate as a ground with respect to the antenna element.
    Type: Application
    Filed: January 20, 2010
    Publication date: August 26, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Masaru Kanazawa
  • Patent number: 7686455
    Abstract: Light in primary colors RGB modulated in a first modulation optical system is transmitted through a relay lens (36) and further divided into a P-polarized light and an S-polarized light by a PS separation wire grid (37). The S-polarized light is transmitted through a wavelength spectral filter (39) to select red/green/blue light components R1, G1, B1 of 615, 515, 450 nm in wavelength, which are then modulated by a Y1 device (44). The P-polarized light is transmitted through a wavelength spectral filter (46) to select red/green/blue light components R2, G2, B2 of 650, 550, 475 nm in wavelength, which are then modulated by a Y2 device (51). The 3 -primary color lights modulated by the Y1/Y2 devices (44), (51) are combined with each other at a PS composite wire grid (55) to project a synthetic light on a screen.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 30, 2010
    Assignees: Victor Company of Japan, Limited, Nippon Hoso Kyokai
    Inventors: Makoto Yoshimura, Masato Furuya, Masaru Kanazawa, Yuichi Kusakabe