Patents by Inventor Tetsuya Sasahara
Tetsuya Sasahara 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: 20240302226Abstract: A strain measuring system includes a piezoelectric element and a resistor provided on an object. The system also includes a resistance detection circuit to detect a change in resistance of the resistor, and a piezoelectric effect detection circuit to detect a piezoelectric effect of the piezoelectric element. A strain calculation circuit detects a strain changing time while the strain of the object is changing using a detection result from the piezoelectric effect detection circuit, calculates a change in resistance of the resistor during the strain changing time, and calculates a degree of strain of the object using a calculation result of the change in resistance.Type: ApplicationFiled: March 8, 2024Publication date: September 12, 2024Applicant: TDK CorporationInventors: Tetsuya SASAHARA, Ken UNNO, Masanori KOBAYASHI, Tetsuo HATA, Lucie OUEDRAOGO
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Patent number: 12072256Abstract: A sensor element suitable for miniaturization. This pressure sensor element has: a metal plate; an insulating film provided on a first surface, which is one surface of the metal plate, so as to form a covered region in which the first plate is covered and an exposed region in which the first surface is exposed; and a pressure detection circuit formed on the insulating film so as to be insulated from the first surface by means of the insulating film.Type: GrantFiled: August 28, 2020Date of Patent: August 27, 2024Assignee: TDK CORPORATIONInventors: Masanori Kobayashi, Ken Unno, Tetsuya Sasahara, Kohei Nawaoka
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Publication number: 20240264013Abstract: A temperature-sensitive and strain-sensitive composite sensor includes a strain-sensitive resistive film and a temperature-sensitive resistive film. The strain-sensitive resistive film is represented by a formula of Cr(100-x-y)AlxNy, and 5<x?50 and 0.1?y?20 are satisfied. The temperature-sensitive resistive film has an absolute value of temperature coefficient of resistance (TCR) of 2000 ppm/° C. or more in a temperature range of ?50° C. or more and 450° C. or less.Type: ApplicationFiled: March 22, 2024Publication date: August 8, 2024Applicant: TDK CORPORATIONInventors: Kohei Nawaoka, Ken Unno, Masanori Kobayashi, Tetsuya Sasahara
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Publication number: 20240255371Abstract: There is provided a multilayer electrode including a contact layer capable of being superposed on a strain resistance film; a diffusion prevention layer superposed on the contact layer; and a mounting layer superposed on the diffusion prevention layer, in which the diffusion prevention layer contains a transition element belonging to the fifth or sixth periods.Type: ApplicationFiled: April 1, 2024Publication date: August 1, 2024Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Masamitsu HAEMORI, Ken UNNO, Tetsuya SASAHARA, Kohei NAWAOKA
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Publication number: 20240175773Abstract: A distortion resistance film is capable of reducing a property change accompanying a composition change and a pressure sensor uses the distortion resistance film. The distortion resistance film is represented by a formula Cr100-x-yAlxNy, in which composition regions of x and y satisfy 25<x?50 and 0.1<y?20, respectively.Type: ApplicationFiled: March 17, 2022Publication date: May 30, 2024Applicant: TDK CORPORATIONInventors: Kohei NAWAOKA, Ken UNNO, Tetsuya SASAHARA, Masanori KOBAYASHI
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Publication number: 20240170189Abstract: A distortion resistance film, etc., which includes Cr, Al, and N and in which film separation can be prevented. A distortion resistance film including an alloy material including Cr, Al, N, and Si.Type: ApplicationFiled: February 25, 2022Publication date: May 23, 2024Applicant: TDK CORPORATIONInventors: Kohei NAWAOKA, Ken UNNO, Tetsuya SASAHARA, Masanori KOBAYASHI
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Publication number: 20240125659Abstract: A stacked electrode is provided on a strain resistance film, wherein: the strain resistance film contains Cr and Al; the stacked electrode has a contact layer that overlaps the strain resistance film, a diffusion prevention layer that overlaps the contact layer, and a mounting layer that overlaps the diffusion prevention layer; and the diffusion prevention layer or the mounting layer covers the contact layer so that an end surface of the contact layer is not exposed.Type: ApplicationFiled: February 25, 2022Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Kohei NAWAOKA
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Publication number: 20240117474Abstract: A strain resistance film containing a composition represented by Cr100-x-y-zAlxNyOz, satisfying 5?x?50, 0.1?y?20, 0.1?z?17, and y+z?25.Type: ApplicationFiled: October 2, 2023Publication date: April 11, 2024Applicant: TDK CORPORATIONInventors: Kohei NAWAOKA, Ken UNNO, Tetsuya SASAHARA, Masanori KOBAYASHI, Tetsuo HATA
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Publication number: 20240068891Abstract: There is provided a sensor member with a small risk of damage. A sensor member includes: a membrane; a protective film covering a part of the membrane; and an electrode portion connected to the membrane. The electrode portion 5 covers at least a part of the protective film.Type: ApplicationFiled: August 23, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Tetsuo HATA, Lucie OUEDRAOGO
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Publication number: 20240068897Abstract: There is provided a sensor member capable of suitably preventing a problem such as the intrusion of moisture or the like through an interface between an electrode and a protective film. A sensor member includes: a protected portion provided on one surface of a metal base and including a detection portion; a protective film including a first protective film portion having a first thickness and a second protective film portion having a second thickness thicker than the first thickness and formed at an opening peripheral edge of an opening leading to the protected portion, and covering at least a part of the protected portion from above; and an electrode portion including a first electrode portion disposed in the opening and connected to the protected portion, and a second electrode portion connected to the first electrode portion at an outer peripheral edge of the first electrode portion and formed on the second protective film portion.Type: ApplicationFiled: August 23, 2023Publication date: February 29, 2024Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Tetsuo HATA
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Publication number: 20230273083Abstract: A metal member with insulating film includes a metal member, an insulating film, and a reinforcement portion. The metal member includes a film formation surface and a connection surface facing in a different direction from the film formation surface and connecting to the film formation surface. The insulating film covers at least a part of the film formation surface and the connection surface over a connection position between the film formation surface and the connection surface. The reinforcement portion is formed along a periphery of the insulating film at the connection position and covers at least a part of the periphery of the insulating film from an opposite side to the metal member.Type: ApplicationFiled: February 10, 2023Publication date: August 31, 2023Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Kohei NAWAOKA
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Publication number: 20230131075Abstract: [Problem] To provide a pressure sensor that has a plurality of detection parts in a lamination direction, and moreover has improved detection accuracy. [Solution] A pressure sensor 10 has a membrane 22 in which deformation corresponding to pressure occurs, a first gauge layer 40 which is formed on the membrane 22, an intermediate insulation layer 50 which is formed on the first gauge layer 40, and a second gauge layer 60 which is formed on the intermediate insulation layer 50. The first gauge layer 40 and the second gauge layer 60 respectively include a first detection part 42 and a second detection part 62 which detect the deformation of the membrane. The distance from the surface of the membrane 22 to the second detection part 62 is no more than 30 ?m.Type: ApplicationFiled: February 15, 2021Publication date: April 27, 2023Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Kohei NAWAOKA
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Publication number: 20220291068Abstract: A sensor element suitable for miniaturization. This pressure sensor element has: a metal plate; an insulating film provided on a first surface, which is one surface of the metal plate, so as to form a covered region in which the first plate is covered and an exposed region in which the first surface is exposed; and a pressure detection circuit formed on the insulating film so as to be insulated from the first surface by means of the insulating film.Type: ApplicationFiled: August 28, 2020Publication date: September 15, 2022Applicant: TDK CORPORATIONInventors: Masanori KOBAYASHI, Ken UNNO, Tetsuya SASAHARA, Kohei NAWAOKA
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Patent number: 11076472Abstract: A signaling lamp monitor is configured to add a communication function to a signaling lamp such as a stack signaling lamp easily and at a low cost. The signaling lamp monitor includes a detector that detects light emitted from the signaling lamp, a controller that generates a detection signal at least based on the detection, and a transmitter that transmits the detection signal by wireless communication. The transmitter is provided with an antenna disposed above the detector.Type: GrantFiled: March 9, 2018Date of Patent: July 27, 2021Assignee: ROHM CO., LTD.Inventors: Tetsuya Sasahara, Hiroshi Sekiguchi, Ikuma Suzuki
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Publication number: 20200178378Abstract: A signaling lamp monitor is configured to add a communication function to a signaling lamp such as a stack signaling lamp easily and at a low cost. The signaling lamp monitor includes a detector that detects light emitted from the signaling lamp, a controller that generates a detection signal at least based on the detection, and a transmitter that transmits the detection signal by wireless communication. The transmitter is provided with an antenna disposed above the detector.Type: ApplicationFiled: March 9, 2018Publication date: June 4, 2020Applicant: Rohm Co., Ltd.Inventors: Tetsuya SASAHARA, Hiroshi SEKIGUCHI, Ikuma SUZUKI
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Patent number: D882162Type: GrantFiled: July 18, 2018Date of Patent: April 21, 2020Assignee: ROHM CO., LTD.Inventors: Tetsuya Sasahara, Hiroshi Sekiguchi
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Patent number: D882163Type: GrantFiled: July 18, 2018Date of Patent: April 21, 2020Assignee: ROHM CO., LTD.Inventors: Tetsuya Sasahara, Yusaku Kawabata