Patents by Inventor Takeshi Ichihara
Takeshi Ichihara 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).
-
Patent number: 11923116Abstract: Disclosed is a grain-oriented electrical steel sheet with extremely low iron loss by means of a magnetic domain refining technique. In a grain-oriented electrical steel sheet having a plurality of magnetic domains refined via a local strain introduction portion, when a direct-current external magnetic field is applied to the steel sheet in a rolling direction, for a magnetic flux leaked from the local strain introduction portion at a position 1.0 mm away from a surface of the steel sheet at a side of the local strain introduction portion, a value obtained by dividing an intensity level of a total leakage magnetic flux by an intensity level of a magnetic flux leaked due to causes other than strain is more than 1.2.Type: GrantFiled: November 21, 2019Date of Patent: March 5, 2024Assignee: JFE STEEL CORPORATIONInventors: Takeshi Omura, Yoshihisa Ichihara, Kunihiro Senda, Takahiro Koshihara
-
Publication number: 20230168287Abstract: An RF detector includes: a detection element configured to detect a signal strength of an RF signal; and a printed circuit board on which a first conductive pattern in electrical continuity with an input end of the detection element and a second conductive pattern in electrical continuity with an output end of the detection element are formed, wherein the first conductive pattern and the second conductive pattern face each other across the detection element to achieve capacitive coupling between the conductive patterns.Type: ApplicationFiled: February 12, 2021Publication date: June 1, 2023Applicant: YOKOWO CO., LTD.Inventors: Kenichi MITSUGI, Takeshi ICHIHARA
-
Publication number: 20200303108Abstract: A common mode noise filter includes an insulating layer, a first coil conductor disposed on a first surface of the insulating layer and extending slenderly, and a second coil conductor disposed on a second surface of the insulating layer and extending slenderly. The second coil conductor faces the first coil conductor across the insulating layer. A portion of the second coil conductor has a cross section crossing a direction in which the portion of the second coil conductor extends slenderly. The cross section includes an apex portion facing the first coil conductor across the insulating layer and a base side portion opposite to the apex portion. A width of the apex portion is smaller than a width of the base-side portion. The common mode noise filter reduces attenuation of differential signals in high frequencies.Type: ApplicationFiled: July 24, 2018Publication date: September 24, 2020Inventors: MASAKATSU NAWATE, ATSUSHI SHINKAI, HIDEKI TANAKA, TAKUJI KAWASHIMA, TAKESHI ICHIHARA
-
Patent number: 10778177Abstract: A common mode noise filter includes a laminated body including first to fourth insulating layers stacked on one another, first to fourth coil conductors spirally extending and disposed on upper surfaces of the first to fourth insulating layers, respectively, a first via-electrode connecting the first coil conductor to the second coil conductor, a second via-electrode connecting the third coil conductor to the fourth coil conductor, first and second connection parts connecting the first via-electrode to first and second inner ends of the first and second coil conductors, respectively, and third and fourth connection parts connecting the second via-electrode to third and fourth inner ends of the third and fourth coil conductors, respectively. The first connection part overlaps the second connection part when viewed from above. The third connection part overlaps the fourth connection part when viewed from above. The common mode noise filter is operable in high frequencies.Type: GrantFiled: August 31, 2017Date of Patent: September 15, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshiharu Oomori, Kenichi Matsushima, Takeshi Ichihara
-
Publication number: 20190333673Abstract: A common mode noise filter includes a laminated body including first to fourth insulating layers stacked on one another, first to fourth coil conductors spirally extending and disposed on upper surfaces of the first to fourth insulating layers, respectively, a first via-electrode connecting the first coil conductor to the second coil conductor, a second via-electrode connecting the third coil conductor to the fourth coil conductor, first and second connection parts connecting the first via-electrode to first and second inner ends of the first and second coil conductors, respectively, and third and fourth connection parts connecting the second via-electrode to third and fourth inner ends of the third and fourth coil conductors, respectively. The first connection part overlaps the second connection part when viewed from above. The third connection part overlaps the fourth connection part when viewed from above. The common mode noise filter is operable in high frequencies.Type: ApplicationFiled: August 31, 2017Publication date: October 31, 2019Inventors: YOSHIHARU OOMORI, KENICHI MATSUSHIMA, TAKESHI ICHIHARA
-
Patent number: 10147534Abstract: A common mode noise filter includes a first coil and a second coil. The first coil is formed in a plurality of insulating layers and includes a spiral first coil conductor and a spiral second coil conductor. The second coil is formed in the plurality of insulating layers and includes a spiral third coil conductor and a spiral fourth coil conductor. The first and third coil conductors are magnetically coupled to form a first common mode filter unit, and the second and fourth coil conductors are magnetically coupled to form a second common mode filter unit. As viewed from above, a first direction in which currents flow through the first and third coil conductors in the first common mode filter unit is opposite to a second direction in which currents flow through the second and fourth coil conductors in the second common mode filter unit.Type: GrantFiled: June 24, 2015Date of Patent: December 4, 2018Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yoshiharu Omori, Takeshi Ichihara, Kenji Ueno
-
Patent number: 10096417Abstract: In a common mode noise filter, first coil (12) includes first coil conductor (16) and second coil conductor (17) with spiral shapes. Second coil (13) includes third coil conductor (18) and fourth coil conductor (19) with spiral shapes. First coil conductor (16), third coil conductor (18), second coil conductor (17), and fourth coil conductor (19) are placed in this order from above. First metal layer (14) configured to be connected to a ground is provided above first coil conductor (16).Type: GrantFiled: November 2, 2015Date of Patent: October 9, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshiharu Omori, Kenichi Matsushima, Ryohei Harada, Kenji Ueno, Atsushi Shinkai, Nariaki Ishida, Takeshi Ichihara
-
Publication number: 20170316869Abstract: A common mode noise filter includes a first coil and a second coil. The first coil is formed in a plurality of insulating layers and includes a spiral first coil conductor and a spiral second coil conductor. The second coil is formed in the plurality of insulating layers and includes a spiral third coil conductor and a spiral fourth coil conductor. The first and third coil conductors are magnetically coupled to form a first common mode filter unit, and the second and fourth coil conductors are magnetically coupled to form a second common mode filter unit. As viewed from above, a first direction in which currents flow through the first and third coil conductors in the first common mode filter unit is opposite to a second direction in which currents flow through the second and fourth coil conductors in the second common mode filter unit.Type: ApplicationFiled: June 24, 2015Publication date: November 2, 2017Inventors: Yoshiharu OMORI, Takeshi ICHIHARA, Kenji UENO
-
Publication number: 20170294257Abstract: In a common mode noise filter, first coil (12) includes first coil conductor (16) and second coil conductor (17) with spiral shapes. Second coil (13) includes third coil conductor (18) and fourth coil conductor (19) with spiral shapes. First coil conductor (16), third coil conductor (18), second coil conductor (17), and fourth coil conductor (19) are placed in this order from above. First metal layer (14) configured to be connected to a ground is provided above first coil conductor (16).Type: ApplicationFiled: November 2, 2015Publication date: October 12, 2017Inventors: YOSHIHARU OMORI, KENICHI MATSUSHIMA, RYOHEI HARADA, KENJI UENO, ATSUSHI SHINKAI, NARIAKI ISHIDA, TAKESHI ICHIHARA
-
Patent number: 9140778Abstract: Provided is a pulse radar device which can attenuate an interference signal and significantly amplify a reflected wave without saturating the interference signal. A baseband amplifier unit (5) is installed in a pulse radar device (1) which is configured to transmit from antenna (3) a transmission pulse wave obtained by modulating a transmission control signal, and to be afterwards switched to a standby mode for a reflected wave obtained by reflecting the transmission pulse wave by an object to be detected.Type: GrantFiled: September 9, 2011Date of Patent: September 22, 2015Assignee: YOKOWO CO., LTD.Inventors: Kenichi Mitsugi, Takeshi Ichihara
-
Publication number: 20130278458Abstract: Provided is a pulse radar device which can attenuate an interference signal and significantly amplify a reflected wave without saturating the interference signal. A baseband amplifier unit (5) is installed in a pulse radar device (1) which is configured to transmit from antenna (3) a transmission pulse wave obtained by modulating a transmission control signal, and to be afterwards switched to a standby mode for a reflected wave obtained by reflecting the transmission pulse wave by an object to be detected.Type: ApplicationFiled: September 9, 2011Publication date: October 24, 2013Applicant: YOKOWO CO., LTD.Inventors: Kenichi Mitsugi, Takeshi Ichihara