Patents Examined by J. San Martin
  • Patent number: 10446738
    Abstract: A displacement sensor having a rectangular shaped elastic member. A piezoelectric element is attached to a first main face of the elastic member. The piezoelectric element has a rectangular-shaped piezoelectric sheet and electrodes on both main faces of the piezoelectric sheet. The piezoelectric sheet is made of poly-L-lactic acid and is at least uniaxially-stretched. The piezoelectric element is attached so that the uniaxial-stretching direction of the piezoelectric sheet is 45° relative to a long-side direction of the elastic member. When the elastic member is bent along the long-side direction, the piezoelectric sheet is stretched along the long-side direction, and the piezoelectric element generates voltage of predetermined level.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: October 15, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masamichi Ando, Hideki Kawamura
  • Patent number: 10447176
    Abstract: A vibration type actuator control apparatus is configured to control driving of a vibration type actuator configured to move a moving body that is one of the vibrator and a contact body that contacts a vibrator. The vibration type actuator includes the vibrator in which a vibration is excited when a two-phase drive signal having a phase difference is applied to an electro-mechanical energy conversion element. The vibration type actuator control apparatus includes a drive signal generator configured to generate the two-phase drive signal. The drive signal generator changes a phase difference of the two-phase drive signal from an initial phase difference when the moving body is moved from a stopped state. The initial phase difference is determined based on a phase difference shift indicative of a shift from a phase difference set so as to stop the moving body.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: October 15, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tomoaki Yamanaka
  • Patent number: 10442091
    Abstract: A gripping device 18 is provided at the front end of an arm of an assembly robot 2. The gripping device 18 includes a pair of grippers 20 and 22 capable of opening and closing. The side configured to come into contact with a part 4, of each gripper 20, 22 includes a pressure-sensitive sensor 24. The pressure-sensitive sensor 24 includes a first electrode and a second electrode serving as a pair of electrodes and an intermediate layer formed of rubber or a rubber composition between the pair of electrodes. The intermediate layer is configured to generate electricity when deformed by contact with an object (part 4). The side configured to come into contact with the object, of the intermediate layer is subjected to a surface modification treatment and has a higher hardness than the opposite side.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 15, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuneaki Kondoh, Tomoaki Sugawara, Yuko Arizumi, Mayuka Araumi, Mizuki Otagiri, Junichiro Natori, Megumi Kitamura, Takahiro Imai, Hideyuki Miyazawa, Makito Nakashima
  • Patent number: 10447135
    Abstract: An energy harvesting device for generating electrical power from low-frequency oscillations includes a high-frequency cantilever, a plurality of low-frequency cantilevers each configured to contact the high-frequency cantilever in response to environmental vibrations having a frequency within a near-resonance frequency range associated with said low-frequency cantilever, an a generator that produces electrical power in response to contact between at least one of the plurality of low-frequency cantilevers and the high-frequency cantilever. The energy harvesting device may also include an impact mass coupled to a free end of each of the plurality of low-frequency cantilevers. Some aspects may include a common base to which the high-frequency cantilever and the plurality of low-frequency cantilevers are coupled. Other aspects may include the generator comprising one or more of an induction coil and magnet, a variable distance capacitor, or a piezo-electric material.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: October 15, 2019
    Assignee: The Curators of the University of Missouri
    Inventors: Nuh Sadi Yuksek, Mahmoud Almasri
  • Patent number: 10441974
    Abstract: An ultrasonic transducer and an ultrasonic probe including the same are provided. The ultrasonic transducer includes a piezoelectric layer configured to convert an electric signal and an ultrasound into each other, and a dematching layer having a uniform thickness, the dematching layer being arranged on a partial region of the piezoelectric layer and configured to reflect the second ultrasound wave that is incident on the dematching layer.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: October 15, 2019
    Assignee: SAMSUNG MEDISON CO., LTD.
    Inventors: In-seong Song, Dong-hyun Kim, Gil-ju Jin
  • Patent number: 10432167
    Abstract: Embodiments of the invention include a piezoelectric resonator which includes an input transducer having a first piezoelectric material, a vibrating structure coupled to the input transducer, and an output transducer coupled to the vibrating structure. In one example, the vibrating structure is positioned above a cavity of an organic substrate. The output transducer includes a second piezoelectric material. In operation the input transducer causes an input electrical signal to be converted into mechanical vibrations which propagate across the vibrating structure to the output transducer.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: October 1, 2019
    Assignee: Intel Corporation
    Inventors: Adel A. Elsherbini, Feras Eid, Baris Bicen, Telesphor Kamgaing, Vijay K. Nair, Johanna M. Swan, Georgios C. Dogiamis, Valluri R. Rao
  • Patent number: 10427981
    Abstract: A piezoelectric material contains: a first component which is a rhombohedral crystal in a single composition, has a Curie temperature Tc1, and is a lead-free-system composite oxide having a perovskite-type structure; a second component which is a crystal other than the rhombohedral crystal in a single composition, has a Curie temperature Tc2<Tc1, and is a lead-free-system composite oxide having a perovskite-type structure; and a third component which is a crystal other than the rhombohedral crystal in a single composition similar to the second component, has a Curie temperature Tc3?Tc1, and is a lead-free-system composite oxide that has a perovskite-type structure and is different from the second component. When a molar ratio of the third component to the sum of the second component and the third component is ? and ?×Tc3+(1??)×Tc2 is Tc4, |Tc4?Tc2|?50° C.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: October 1, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Koji Sumi, Kazuya Kitada, Tomohiro Sakai, Yasuaki Hamada, Tetsuya Isshiki, Satoshi Kimura, Akio Ito, Tsuneo Handa
  • Patent number: 10424715
    Abstract: In an elastic wave device, IDT electrodes on a piezoelectric substrate are electrically connected to wiring electrodes. A support member covers at least portions of the wiring electrodes. Through-holes in the support member expose upper surfaces of the wiring electrodes and have conductive layers filled therein. The wiring electrodes each have a multilayer structure in which a refractory metal film having a melting point of 900° C. or higher, a diffusion preventive film, and an Al or Al-alloy film are laminated successively from the upper surface side.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: September 24, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masashi Tsubokawa, Taku Kikuchi
  • 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: 10425059
    Abstract: A crystal resonator includes a crystal element and excitation electrodes. The crystal element has a pair of principal surfaces parallel to an X?-axis and a Z?-axis. The X?-axis is an axis of rotating an X-axis as a crystallographic axis of a crystal in a range of 15 degrees to 25 degrees around a Z-axis as a crystallographic axis of the crystal. The Z?-axis is an axis of rotating the Z-axis in a range of 33 degrees to 35 degrees around the X?-axis. The excitation electrodes are formed on the respective principal surfaces of the crystal element. Elliptical mesa portions or elliptical inverted mesa portions are formed on the respective principal surfaces. The mesa portions project from outer peripheries of the principal surfaces. The inverted mesa portions are depressed from the outer peripheries of the principal surfaces.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 24, 2019
    Assignee: NIHON DEMPA KOGYO CO., LTD.
    Inventors: Shigeru Obara, Tetsuya Sato, Masaaki Nakahara, Tomonori Shibazaki, Yuki Oi, Yuya Nishimura
  • Patent number: 10425058
    Abstract: An elastic wave device includes a piezoelectric substrate, a first dielectric film disposed on the piezoelectric substrate, and an IDT electrode laminated on the first dielectric film. The resistivity of the piezoelectric substrate is equal to or lower than the resistivity of the first dielectric film. The resistivity of the first dielectric film is equal to or lower than about 1×1014 ?·cm.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: September 24, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yasumasa Taniguchi, Masakazu Mimura, Daisuke Tamazaki
  • Patent number: 10418967
    Abstract: To realize a resonator element capable of obtaining sufficient electric field efficiency and securing a satisfactory element characteristic, a resonator element of the invention includes a base section and a pair of resonating arms extending from the base section. The resonator element includes recesses having a curved surface shape respectively on two side surfaces (surfaces crossing a direction in which the resonating arms resonate) of the resonating arm.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: September 17, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Naohiro Nakagawa
  • 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: 10411181
    Abstract: Devices and methods described herein provide electrode pair access from a single side of a device by using one or more via holes through the device. The via hole can pass through or near the center of the device. By creating a conductive path through the via hole of the device, devices and methods of the present disclosure advantageously provide access to a pair of electrodes, each of which contacts a different side of a device layer, on a single side of the device while enabling a greater active device area than is possible using conventional techniques. In addition, the central location of the via hole provides favorable mechanical properties by avoiding radial constriction of the device layers in applications such as piezoelectric devices.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: September 10, 2019
    Assignee: Metis Design Corporation
    Inventors: Seth S. Kessler, Christopher T. Dunn
  • 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: 10404192
    Abstract: An electrical voltage-generating piezoelectric device comprising at least a first blade (1) with a curved portion (10) defining a first arm (11) and a second arm (12) of the blade, the first arm (11) being intended to be fastened to a fixed support, the second arm (12) being substantially flat and having a free end (120) designed to oscillate around its resting position under the effect of mechanical force, at least one piezoelectric element (31) resting upon one of the main surfaces (14) of the second arm (12) of the first blade. The device also includes a second blade (2) identical in structure to the first blade (1), the first arms (11, 21) of the first and second blades (1, 2) being fastened together on all or part of their surfaces and being fixed relative to each other.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: September 3, 2019
    Assignee: HAGER ELECTRO SAS
    Inventors: Jean-Frédéric Martin, Sébastien Didier
  • Patent number: 10397708
    Abstract: A piezoelectric element includes a first piezoelectric layer which has a first polarization axis direction in a thickness direction of the first piezoelectric layer and is made of AlN. A second piezoelectric layer made of GeAlN which is deposited on the first piezoelectric layer and has a second polarization axis direction opposite to the first polarization axis direction. A first electrode is provided on a side of the first piezoelectric layer which is opposite from a side where the second piezoelectric layer is disposed. A second electrode provided on a side of the second piezoelectric layer which is opposite from a side where the first piezoelectric layer is disposed.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: August 27, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Keiichi Umeda, Takaaki Mizuno
  • Patent number: 10396755
    Abstract: A resonator includes a resonating portion including a first electrode, a second electrode, and a piezoelectric layer positioned between the first electrode and the second electrode; and a frame provided at an outer edge of the resonating portion, at least a portion of the frame covering an outer end portion of the second electrode.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: August 27, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sung Han, Dae Ho Kim, Ran Hee Shin, Hwa Sun Lee, Chang Hyun Lim, Tae Kyung Lee, Sung Sun Kim
  • Patent number: 10388851
    Abstract: A piezoelectric element includes a substrate, and a lower electrode, a piezoelectric film, an adhesion layer, and an upper electrode provided on the substrate in this order, in which the piezoelectric film has a perovskite structure that is preferentially oriented to a (100) plane and is a composite oxide represented by the compositional formula Pb[(ZrxTi1-x)1-yNby]O3, where x satisfies 0<x<1 and y satisfies 0.10?y<0.13, I(200)/I(100), which is a ratio between a diffraction peak intensity I(100) from the perovskite plane and a diffraction peak intensity I(200) from a perovskite plane as measured by X-ray diffraction method, satisfies 0.85?I(200)/I(100)?1.00, and the adhesion layer contains a metal having an ionization energy of 0.34 eV or less.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: August 20, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Daigo Sawaki, Takami Arakawa
  • Patent number: 10381546
    Abstract: An object of the present invention is to provide a bimorph piezoelectric film that enables the production of touch panels and the like that are less influenced by pyroelectric noise due to temperature change, and exhibit high transparency. The present invention provides a bimorph piezoelectric film comprising in sequence a first piezoelectric film, a tackifier layer or an adhesive agent layer, and a second piezoelectric film, the first piezoelectric film and the second piezoelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing, the first piezoelectric film and the second piezoelectric film each having a total light transmittance of 90% or more, and a total haze value of 8.0% or less.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 13, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten Kou, Tetsuhiro Kodani, Tomoyuki Gotou, Saori Inaba, Takashi Kanemura