Patents by Inventor Masanori Ueda

Masanori Ueda 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).

  • Surface acoustic wave device and method of fabricating the same
    Patent number: 7227429
    Abstract: A surface acoustic wave device includes a piezoelectric substrate having a first surface on which comb-like electrodes, first pads connected thereto, and a first film are provided. The first film is located so as to surround the comb-like electrodes. A base substrate has a second surface on which second pads joined to the first pads and a second film joined to the first film are provided. The first and second films joined by a surface activation process define a cavity in which the comb-like electrodes and the first and second pads are hermetically sealed.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: June 5, 2007
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Osamu Kawachi, Osamu Ikata, Masanori Ueda, Suguru Warashina
  • Duplexer
    Publication number: 20070111674
    Abstract: A duplexer includes a transmit filter of a ladder type filter, connected between a common terminal and a transmitting terminal, and a receive filter of the ladder type filter, connected between the common terminal and a receiving terminal. One or more parallel resonators in the transmit filter are grounded through a transmitting inductance, and a portion of multiple parallel resonators are grounded through a first receiving inductance and a remaining portion of the multiple parallel resonators are grounded through a second receiving inductance.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 17, 2007
    Inventors: Yasuhide Iwamoto, Jun Tsutsumi, Masafumi Iwaki, Masanori Ueda
  • Surface acoustic wave element, and surface acoustic wave device including the same
    Patent number: 7218038
    Abstract: A surface acoustic wave element includes: metal patterns that include interdigital transducers, each of the metal patterns being formed with a first alloy or multi-layer film of metals having different standard electrode potentials; and metal films each formed with a second alloy or multi-layer film containing metals having different standard electrode potentials from the standard electrode potentials of the metals forming the first alloy or multi-layer film, the metal films being formed at least on a part of the regions other than the regions corresponding to the electrode fingers of the interdigital transducers of all the metal patterns that are electrically independent of one another.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: May 15, 2007
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Takashi Matsuda, Jun Tsutsumi, Shogo Inoue, Masanori Ueda
  • Piezoelectric thin-film resonator and filter
    Publication number: 20070096597
    Abstract: A piezoelectric thin-film resonator includes a lower electrode formed on a substrate to define a rounded dome-shaped cavity between the lower electrode and the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. A membrane region is an overlapping region of the lower electrode and the upper electrode interposing the piezoelectric film and a projected area of the cavity onto the substrate includes the membrane region.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 3, 2007
    Inventors: Shinji Taniguchi, Tsuyoshi Yokoyama, Motoaki Hara, Takeshi Sakashita, Jun Tsutsumi, Masafumi Iwaki, Tokihiro Nishihara, Masanori Ueda
  • Bonded substrate, surface acoustic wave chip, and surface acoustic wave device
    Patent number: 7208859
    Abstract: A bonded substrate includes a lithium tantalate substrate and a sapphire substrate to which the lithium tantalate substrate is bonded, a bonded interface of the lithium tantalate and the sapphire substrate includes a bonded region in an amorphous state having a thickness of 0.3 nm to 2.5 nm. The bonded region in the amorphous state is formed by activating at least one of the lithium tantalate substrate and the sapphire substrate in the bonded interface with neutralized atom beams, ion beams or plasma of inert gas or oxygen. It is possible to bond the piezoelectric substrate to the supporting substrate having different lattice constants without the high-temperature thermal treatment and realize the bonded substrate having an excellent bonding strength and being less warped.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: April 24, 2007
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Michio Miura, Masanori Ueda, Shunichi Aikawa, Toru Uemura, Kunihisa Wada, Naoyuki Mishima
  • Surface acoustic wave device and method of manufacturing the same
    Patent number: 7202590
    Abstract: A surface acoustic wave device includes: a piezoelectric substrate that has two or more resonators formed on a surface; and a supporting substrate that is joined to another surface of the piezoelectric substrate. In this surface acoustic wave device, at least two of the resonators have exciting portions that overlap each other in the direction of propagating surface acoustic waves, and at least a part of the piezoelectric substrate is removed or modified to have different properties between at least one pair of overlapping resonators among the resonators having the overlapping portions.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: April 10, 2007
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Takashi Matsuda, Michio Miura, Yoshio Satoh, Masanori Ueda
  • Nucleic acid analyzing method
    Patent number: 7198701
    Abstract: To provide a method for analyzing a nucleic acid according to high throughput microcapillary electrophoresis during microchip electrophoresis under non-steady electric field, the method being capable of detecting polymorphism of a large number of genes at a high speed. The present invention is useful for the diagnosis and treatment of diseases such as detection of gene diseases and application to Taylor-made therapy.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: April 3, 2007
    Assignee: Japan Science and Technology Corporation
    Inventors: Masanori Ueda, Hirohisa Abe, Yoshinobu Baba
  • Filter and antenna duplexer
    Publication number: 20070046394
    Abstract: There is provided a filter including a first resonator, a second resonator in which an excitation efficiency is reduced more than the first resonator, and an inductor connected in parallel with the second resonator.
    Type: Application
    Filed: August 24, 2006
    Publication date: March 1, 2007
    Inventors: Shogo Inoue, Tokihiro Nishihara, Takashi Matsuda, Masanori Ueda
  • Duplexer having matching circuit
    Publication number: 20070046395
    Abstract: A duplexer includes a first filter connected to a common terminal, a second filter connected to the common terminal, an additional inductor connected between at least one of the first and second filters and ground, a matching-use inductor connected between the common terminal and the ground, and a capacitor connected between the common terminal and at least one of the first and second filters.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 1, 2007
    Inventors: Jun Tsutsumi, Masafumi Iwaki, Yasuhide Iwamoto, Masanori Ueda
  • Duplexer and ladder type filter
    Publication number: 20070030096
    Abstract: A duplexer includes an antenna terminal, a first filter connected to the antenna terminal, and a second filter connected to the antenna terminal. At least one of the first filter and the second filter is a ladder type filter in which a parallel resonator and multiple series resonators are included, one or more first inductors are respectively connected in parallel with one or more series resonators out of the multiple series resonators, and one of the one or more first inductors is connected in parallel with one of the multiple series resonators that is arranged closest to the antenna terminal.
    Type: Application
    Filed: August 8, 2006
    Publication date: February 8, 2007
    Inventors: Tokihiro Nishihara, Shogo Inoue, Takashi Matsuda, Masanori Ueda, Masafumi Iwaki, Shinji Taniguchi, Go Endo
  • Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gap
    Patent number: 7170371
    Abstract: Efficient transverse energy confinement, and provision of a surface acoustic wave filter having preferable characteristics of both insertion loss and shape factor are obtained. In the surface acoustic wave filter, electrode fingers of one comb electrode are laid in a state of being inserted to the electrode fingers of the other comb electrode, and a thick film thicker than each plurality of electrode fingers is produced in a partial area of the bus bar, and a tip gap is provided between the top of each plurality of electrode fingers and the end face of the opposed bus bar, with a distance therebetween set not greater than 0.2? (where, ? is one period of the comb electrode).
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: January 30, 2007
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Masanori Ueda, Osamu Kawachi, Shogo Inoue, Jun Tsutsumi, Takashi Matsuda, Yoshio Satoh
  • Magnetic recording medium drive capable of suppressing vibration of flexible printed circuit board
    Publication number: 20060291094
    Abstract: A head actuator member supports a head slider at the tip end. A first fixing member is integrated with the enclosure at a position spaced from the head actuator member by a predetermined distance. A second fixing member firmly hold the folded section of a flexible printed circuit board against the first fixing member. The flexible printed circuit board is thus reliably prevented from lifting from the first or second fixing member. The first fixing member is firmly secured to the enclosure. The first fixing member is reliably prevented from shifting and shaking. Even if the head actuator member changes its attitude, the flexible printed circuit board can reliably be prevented from vibration. The head slider can thus be positioned right above a target recording track on the magnetic recording disk with a higher accuracy. Reading and writing of magnetic bit data can be realized with a high accuracy.
    Type: Application
    Filed: October 27, 2005
    Publication date: December 28, 2006
    Inventors: Masanori Ueda, Haruyuki Matsunaga
  • Surface acoustic wave filter and duplexer including the same
    Patent number: 7154359
    Abstract: A surface acoustic wave filter includes: an input interdigital transducer and an output interdigital transducer that are formed on a piezoelectric substrate; a capacitance that is provided between the input terminal of the input interdigital transducer and the output terminal of the output interdigital transducer; a first common ground terminal that connects the ground terminal of the input interdigital transducer and the ground terminal of the output interdigital transducer; and an inductance that is provided between the first common ground terminal and a ground.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: December 26, 2006
    Assignees: Fujitsu Media Devices Limited, Fujitsu Limited
    Inventors: Shogo Inoue, Jun Tsutsumi, Takashi Matsuda, Masanori Ueda
  • Acoustic wave filter and acoustic wave duplexer
    Publication number: 20060267708
    Abstract: An acoustic wave filter includes: a ladder filter that has acoustic wave resonators connected in series and parallel arms; an inductor that is provided between a ground and at least one of the parallel-arm resonators in the ladder filter; and a resonance circuit that is provided in parallel with the inductor, and is located between the ground and the parallel-arm resonators in the ladder filter. In this acoustic wave filter, the resonance frequency of the resonance circuit is expressed as: 2f0?150 MHz<fr<2f0+150 MHz or 3f0?150 MHz<fr<3f0+150 MHz, where fr represents the resonance frequency, and f0 represents the passband frequency of the ladder filter.
    Type: Application
    Filed: May 23, 2006
    Publication date: November 30, 2006
    Inventors: Satoru Matsuda, Shogo Inoue, Takashi Matsuda, Masanori Ueda
  • Piezoelectric thin-film resonator and filter
    Publication number: 20060255693
    Abstract: A piezoelectric thin-film resonator includes: a lower electrode that is formed on a substrate; a piezoelectric film that is formed on the lower electrode; and an upper electrode that is formed on the piezoelectric film. In the piezoelectric thin-film resonator, the upper electrode has a greater film thickness than the lower electrode.
    Type: Application
    Filed: May 9, 2006
    Publication date: November 16, 2006
    Inventors: Tokihiro Nishihara, Tsuyoshi Yokoyama, Shinji Taniguchi, Takeshi Sakashita, Jun Tsutsumi, Masafumi Iwaki, Masanori Ueda
  • Piezoelectric thin-film resonator and filter having the same
    Publication number: 20060244553
    Abstract: A piezoelectric thin-film resonator includes a lower electrode provided on a substrate, a piezoelectric thin film provided on the lower electrode, and an upper electrode provided on the piezoelectric thin film. A membrane region is defined by a region where the upper electrode and the lower electrode overlap each other to sandwich the piezoelectric thin film therebetween and has an elliptical shape, and the lower electrode is also provided at an outer side of the membrane region in a region in which neither an extraction electrode of the upper electrode nor an extraction electrode of the lower electrode is provided.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 2, 2006
    Inventors: Tsuyoshi Yokoyama, Tokihiro Nishihara, Shinji Taniguchi, Takeshi Sakashita, Jun Tsutsumi, Masafumi Iwaki, Masanori Ueda
  • Filter and duplexer
    Publication number: 20060238272
    Abstract: A filter includes a filter chip, a laminated portion on which the filter chip is mounted, an input/output terminal provided in the laminated portion, a first U-shaped line pattern provided on a first layer and coupled to the filter chip, the first layer being included in the laminated portion between the filter chip and the input/output terminal, and a second U-shaped line pattern provided on a second layer to substantially overlap the first U-shaped line pattern and coupled to the first U-shaped line pattern and the input/output terminal, the second layer being included in the laminated portion between the first layer and the input/output terminal.
    Type: Application
    Filed: April 20, 2006
    Publication date: October 26, 2006
    Inventors: Yasuhide Iwamoto, Shogo Inoue, Masanori Ueda
  • Elastic boundary wave device, resonator, and ladder-type filter
    Publication number: 20060220494
    Abstract: An elastic boundary wave device includes a first medium that is piezoelectric, electrodes provided on the first medium to excite elastic waves, a dielectric film provided on the electrodes and the first medium, and a second medium provided on the dielectric film. The dielectric film mainly includes silicon oxide and a density thereof is at least 2.05 g/cm3.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 5, 2006
    Inventors: Michio Miura, Takashi Matsuda, Masanori Ueda, Seiichi Mitobe
  • Surface acoustic wave filter
    Publication number: 20060192636
    Abstract: A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb electrodes formed between the pair of reflective electrodes on the piezoelectric substrate, wherein, in regard to the neighboring two comb electrodes among the plurality of comb electrodes, an electrode pitch of one comb electrode is set so that continuously varying phases of surface acoustic waves respectively generated by the two comb electrodes are obtained in a gap opposite to an outermost finger electrode of the other neighboring comb electrode.
    Type: Application
    Filed: April 25, 2006
    Publication date: August 31, 2006
    Inventors: Masanori Ueda, Osamu Kawachi, Motoyuki Tajima, Kenya Hashimoto, Takuya Abe
  • Electronic circuit device
    Publication number: 20060189292
    Abstract: An electronic circuit device includes filters, and a 90-degree hybrid circuit connected to the filters. The 90-degree hybrid circuit may have first and second output terminals. The first terminal of the 90-degree hybrid circuit is connected to an input terminal of one of the filters, and the second terminal thereof is connected to an input terminal of another one of the filters. The 90-degree hybrid circuit may include at least one of phase lines and lumped constant circuit elements.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 24, 2006
    Inventors: Masanori Ueda, Osamu Kawachi, Kenya Hashimoto