Patents by Inventor Hiromi Yatsuda
Hiromi Yatsuda 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).
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Publication number: 20240118242Abstract: The present invention discloses a shear-mode liquid-phase sensor having a groove structure including a sensing area, over which a plurality of surface acoustic waves propagate, forming thereon the groove structure along a propagation direction of the plurality of surface acoustic waves, wherein the groove structure has a bottom surface to be bound with target molecules, a width ranging from 100% to 500% of a maximum length of each target molecule and a depth ranging from 50% to 500% of the maximum length of each target molecule.Type: ApplicationFiled: October 10, 2022Publication date: April 11, 2024Inventor: Hiromi Yatsuda
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Publication number: 20220404313Abstract: The present invention discloses a sensor system for estimating respective amounts of different molecules in a biological liquid, and the sensor system includes: an electronic circuit module and a Shear Horizontal Surface Acoustic Wave (SH-SAW) sensor, wherein the electronic circuit module has more than two different impedance matching circuits for exciting and detecting a plurality of Surface Acoustic Waves (SAWs) with different frequencies, and the SH-SAW sensor has at least one transducer and a surface on which the plurality of SAWs propagate, and wherein the surface is covered with a probe to be bound with more than two different molecules.Type: ApplicationFiled: June 9, 2022Publication date: December 22, 2022Applicant: tst biomedical electronics Co., Ltd.Inventor: Hiromi Yatsuda
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Patent number: 9678042Abstract: A surface acoustic wave sensor of the invention includes: a piezo element that propagates a surface acoustic wave; an electrode that carries out conversion of an electrical signal and a surface acoustic wave; and a porous base member into which liquid infiltrates and which comes into contact with the piezo element.Type: GrantFiled: November 1, 2012Date of Patent: June 13, 2017Assignee: JAPAN RADIO CO., LTD.Inventors: Takashi Kogai, Hiromi Yatsuda
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Patent number: 9645116Abstract: An object characteristics measurement apparatus of the invention includes a surface acoustic wave device. The surface acoustic wave device includes: an interdigitated electrode that is formed on a first surface on a piezoelectric substrate, excites an elastic wave, and receives reflection based on the elastic wave; a reflector that has a third surface and a fourth surface between the interdigitated electrode and a second surface orthogonal to the first surface in a propagation direction of the elastic wave; a reaction field that is formed between the interdigitated electrode and the reflector, in which the measured object is to be loaded; and a propagator that is formed between the reflector and the second surface.Type: GrantFiled: December 14, 2012Date of Patent: May 9, 2017Assignee: JAPAN RADIO CO., LTD.Inventors: Naoyuki Yoshimura, Hiromi Yatsuda
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Publication number: 20150000414Abstract: An object characteristics measurement apparatus of the invention includes a surface acoustic wave device. The surface acoustic wave device includes: an interdigitated electrode that is formed on a first surface on a piezoelectric substrate, excites an elastic wave, and receives reflection based on the elastic wave; a reflector that has a third surface and a fourth surface between the interdigitated electrode and a second surface orthogonal to the first surface in a propagation direction of the elastic wave; a reaction field that is formed between the interdigitated electrode and the reflector, in which the measured object is to be loaded; and a propagator that is formed between the reflector and the second surface.Type: ApplicationFiled: December 14, 2012Publication date: January 1, 2015Inventors: Naoyuki Yoshimura, Hiromi Yatsuda
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Publication number: 20140305221Abstract: A surface acoustic wave sensor of the invention includes: a piezo element that propagates a surface acoustic wave; an electrode that carries out conversion of an electrical signal and a surface acoustic wave; and a porous base member into which liquid infiltrates and which comes into contact with the piezo element.Type: ApplicationFiled: November 1, 2012Publication date: October 16, 2014Inventors: Takashi Kogai, Hiromi Yatsuda
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Patent number: 8322218Abstract: A surface acoustic wave device having electrodes disposed on a piezoelectric substrate, comprising a sealing member having a peripheral wall disposed on the piezoelectric substrate in surrounding relation to the electrodes, and a top plate covering the peripheral wall; and a sealing stiffener disposed on the piezoelectric substrate in facing relation to a liquid material imposed on the piezoelectric substrate and which extends parallel to a portion of the peripheral wall.Type: GrantFiled: November 17, 2008Date of Patent: December 4, 2012Assignee: Japan Radio Co., Ltd.Inventors: Takashi Kogai, Hiromi Yatsuda
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Publication number: 20100236322Abstract: A surface acoustic wave device having electrodes disposed on a piezoelectric substrate, comprising a sealing member having a peripheral wall disposed on the piezoelectric substrate in surrounding relation to the electrodes, and a top plate covering the peripheral wall; and a sealing stiffener disposed on the piezoelectric substrate in facing relation to a liquid material imposed on the piezoelectric substrate and which extends parallel to a portion of the peripheral wall.Type: ApplicationFiled: November 17, 2008Publication date: September 23, 2010Inventors: Takashi Kogai, Hiromi Yatsuda
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Patent number: 6815313Abstract: A first substrate has a plurality of bumps and a second substrate has a plurality of openings at positions in registration with the plurality of bumps when the first and second substrates are placed one on top of the other in a confronting manner. The first and second substrates are put together by fusing a sealing wall formed on the second substrate, to hermetically seal an electronic device lying on the first substrate therein. Gas that may be generated upon fusing of the sealing wall can be effectively removed through the openings in the second substrate.Type: GrantFiled: December 27, 2001Date of Patent: November 9, 2004Assignee: Japan Radio Co., Ltd.Inventor: Hiromi Yatsuda
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Patent number: 6628179Abstract: In a surface-acoustic-wave (SAW) device and method of fabricating the same, a SAW chip is flip-chip mounted in a package. The package has a window facing an electrode formed surface of the SAW chip. After the SAW chip is mounted, the in-process item is inserted into reactive ion etching equipment, with the window open. The substrate or electrodes of the SAW chip is etched by an etching gas introduced into the ion etching equipment. Films may be formed on the electrode formation surface, in place of etching. Thus, variation in characteristics stemming from variations in manufacturing processes can be suppressed.Type: GrantFiled: September 4, 2001Date of Patent: September 30, 2003Inventors: Hiromi Yatsuda, Hiroaki Iijima, Nobuhiro Mineshima
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Publication number: 20020056897Abstract: A first substrate has a plurality of bumps and a second substrate has a plurality of openings at positions in registration with the plurality of bumps when the first and second substrates are placed one on top of the other in a confronting manner. The first and second substrates are put together by fusing a sealing wall formed on the second substrate, to hermetically seal an electronic device lying on the first substrate therein. Gas that may be generated upon fusing of the sealing wall can be effectively removed through the openings in the second substrate.Type: ApplicationFiled: December 27, 2001Publication date: May 16, 2002Inventor: Hiromi Yatsuda
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Patent number: 6362518Abstract: A first substrate has a plurality of bumps and a second substrate has a plurality of openings at positions in registration with the plurality of bumps when the first and second substrates are placed one on top of the other in a confronting manner. The first and second substrates are put together by fusing a sealing wall formed on the second substrate, to hermetically seal an electronic device lying on the first substrate therein. Gas that may be generated upon fusing of the sealing wall can be effectively removed through the openings in the second substrate.Type: GrantFiled: May 30, 2000Date of Patent: March 26, 2002Assignee: Japan Radio Co., Ltd.Inventor: Hiromi Yatsuda
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Publication number: 20020003459Abstract: In a surface-acoustic-wave (SAW) device and method of fabricating the same, a SAW chip is flip-chip mounted in a package. The package has a window facing an electrode formed surface of the SAW chip. After the SAW chip is mounted, the in-process item is inserted into reactive ion etching equipment, with the window open. The substrate or electrodes of the SAW chip is etched by an etching gas introduced into the ion etching equipment. Films may be formed on the electrode formation surface, in place of etching. Thus, variation in characteristics stemming from variations in manufacturing processes can be suppressed.Type: ApplicationFiled: September 4, 2001Publication date: January 10, 2002Inventors: Hiromi Yatsuda, Hiroaki Iijima, Nobuhiro Mineshima
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Patent number: 6321444Abstract: In a surface-acoustic-wave (SAW) device and method of fabricating the same, a SAW chip is flip-chip mounted in a package. The package has a window facing an electrode formed surface of the SAW chip. After the SAW chip is mounted, the in-process item is inserted into reactive ion etching equipment, with the window open. The substrate or electrodes of the SAW chip is etched by an etching gas introduced into the ion etching equipment. Films may be formed on the electrode formation surface, in place of etching. Thus, variation in characteristics stemming from variations in manufacturing processes can be suppressed.Type: GrantFiled: April 11, 2000Date of Patent: November 27, 2001Assignee: Japan Radio Co., Ltd.Inventors: Hiromi Yatsuda, Hiroaki Iijima, Nobuhiro Mineshima
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Patent number: 5523641Abstract: A surface acoustic wave device has a package and a surface acoustic wave element mounted therein face down. The package includes a side wall comprising linear inner side surfaces close to respective outer side surfaces of the surface acoustic wave element and recesses defined where the inner side surfaces of the side wall intersect at respective inner corners. When the surface acoustic wave element is inserted into the side wall along the inner side surfaces thereof, the corners of the surface acoustic wave element do not engage the side wall because of the recesses. Therefore, the outer side surfaces of the surface acoustic wave element may be positioned very closely to the inner side surfaces of the side wall. The surface acoustic wave device may be reduced in size, and the surface acoustic wave element may have input and output electrode pads and ground pads positioned highly accurately with respect to electrode pads on the bottom plate of the package.Type: GrantFiled: September 8, 1994Date of Patent: June 4, 1996Assignee: Nihon Musen Kabushiki KaishaInventors: Hiromi Yatsuda, Yoshihiko Takeuchi
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Patent number: 5521453Abstract: A composite surface acoustic wave filter includes an interdigitated interdigital surface acoustic wave filter having input and output terminals. Two one-port surface acoustic wave resonators are electrically connected in series to the interdigitated interdigital surface acoustic wave filter respectively at the input and output terminals, the one-port surface acoustic wave resonators having antiresonant frequencies in a stop band that is close to and higher than the passband of the interdigitated interdigital surface acoustic wave filter. Two other one-port surface acoustic wave resonators are electrically connected parallel to the interdigitated interdigital surface acoustic wave filter, the one-port surface acoustic wave resonators having resonant frequencies in a stop band that is close to and lower than the passband of the interdigitated interdigital surface acoustic wave filter.Type: GrantFiled: January 23, 1995Date of Patent: May 28, 1996Assignee: Japan Radio Co., Ltd.Inventor: Hiromi Yatsuda
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Patent number: 5471722Abstract: A surface acoustic wave device and its manufacturing method. A surface acoustic wave device is used as filters for VHF and UHF range signals, or resonators for VHF and UHF range, by driving the surface of a surface acoustic wave element with applied signal to electrodes, transmitting a surface acoustic wave, and receiving the surface acoustic wave with other electrodes. In a configuration of a surface mount type surface acoustic wave device where a surface acoustic wave element is stored inside a package consisting of a base and a cover, pads are attached on a surface of the base and the surface acoustic wave element is fixed to the base by face down bonding.Type: GrantFiled: May 3, 1993Date of Patent: December 5, 1995Assignee: Japan Radio Co., Ltd.Inventor: Hiromi Yatsuda
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Patent number: 5252882Abstract: A surface acoustic wave device and its manufacturing method. A surface acoustic wave device is used as filters for VHF and UHF range signals, or resonators for VHF and UHF range, by driving the surface of a surface acoustic wave element with applied signal to electrodes, transmitting a surface acoustic wave, and receiving the surface acoustic wave with other electrodes. In a configuration of a surface mount type surface acoustic wave device where a surface acoustic wave element is stored inside a package consisting of a base and a cover, pads are attached on a surface of the base and the surface acoustic wave element is fixed to the base by face down bonding.Type: GrantFiled: June 27, 1991Date of Patent: October 12, 1993Assignee: Japan Radio Co., Ltd.Inventor: Hiromi Yatsuda
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Patent number: 5175519Abstract: A surface elastic wave filter includes a plurality of input interdigital transducers for receiving a high-frequency input signal, and a plurality of output inter-digital transducers for producing an output signal derived from the input signal and having predetermined frequency characteristics. Each of the input and output interdigital transducers having a pair of confronting connectors for receiving the input signal and extracting the output signal, respectively, and a pair of groups of interdigitating electrode fingers extending from the connectors. The input and/or output interdigital transducers include finger-withdrawn interdigital transducers with electrode fingers selectively withdrawn in different positions. With such withdrawal weighting, the interdigital transducers have different sidelobe characteristics, i.e., frequency blocking characteristics, so that the surface elastic wave filter operates with a greater sidelobe suppression.Type: GrantFiled: April 18, 1990Date of Patent: December 29, 1992Assignee: Nihon Musen Kabushiki KaishaInventors: Hiromi Yatsuda, Yoshihiko Takeuchi
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Patent number: 4973875Abstract: A surface elastic wave filter for processing a supplied signal into a signal with nonlinear-phase frequency characteristics has a piezoelectric substrate for propagating a surface elastic wave through a surface layer thereof and spaced input and output electrodes disposed on the surface layer for sending and receiving the surface elastic wave. Each of the input and output electrodes has a pair of common electrodes having comb-shaped interdigitating electrode fingers extending therebetween. The central electrode fingers of the input and output electrodes have central axes across the direction of propagation of the surface elastic wave. The distance along the direction of propagation between the central axes is varied in the direction substantially normal to the direction of propagation.Type: GrantFiled: November 16, 1988Date of Patent: November 27, 1990Assignee: Nihon Musen Kabushiki KaishaInventor: Hiromi Yatsuda