Patents by Inventor Tetsuya Katayama
Tetsuya Katayama 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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Patent number: 11890641Abstract: A masking member used to coat a pipe inner circumferential surface of a vent stringer, wherein the masking member comprises: a sponge for blocking a pipe internal space of the vent stringer, the sponge having an outer circumferential surface capable of contacting the pipe inner circumferential surface; and a support member for supporting the sponge.Type: GrantFiled: March 23, 2020Date of Patent: February 6, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventor: Tetsuya Katayama
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Publication number: 20220143648Abstract: A masking member used to coat a pipe inner circumferential surface of a vent stringer, wherein the masking member comprises: a sponge for blocking a pipe internal space of the vent stringer, the sponge having an outer circumferential surface capable of contacting the pipe inner circumferential surface; and a support member for supporting the sponge.Type: ApplicationFiled: March 23, 2020Publication date: May 12, 2022Inventor: Tetsuya KATAYAMA
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Patent number: 10746848Abstract: An in-vehicle radar apparatus includes an interference determination means, a selection means, and a frequency changing means. The interference determination means determines presence or absence of interference between multifrequency CWs, which are radar waves, based on a beat signal generated by mixing a transmission signal and a received signal, which are radar waves. The selection means selects an own vehicle or an other-side apparatus, which is a party of the interference, according to an occurrence state of the interference, when the interference determination means determines that the interference is present. The frequency changing means that changes a center frequency of the multifrequency CW transmitted from the own vehicle, when the selection means selects the own vehicle.Type: GrantFiled: May 26, 2015Date of Patent: August 18, 2020Assignee: DENSO CORPORATIONInventor: Tetsuya Katayama
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Publication number: 20170153315Abstract: An in-vehicle radar apparatus includes an interference determination means, a selection means, and a frequency changing means. The interference determination means determines presence or absence of interference between multifrequency CWs, which are radar waves, based on a beat signal generated by mixing a transmission signal and a received signal, which are radar waves. The selection means selects an own vehicle or an other-side apparatus, which is a party of the interference, according to an occurrence state of the interference, when the interference determination means determines that the interference is present. The frequency changing means that changes a center frequency of the multifrequency CW transmitted from the own vehicle, when the selection means selects the own vehicle.Type: ApplicationFiled: May 26, 2015Publication date: June 1, 2017Inventor: Tetsuya Katayama
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Patent number: 8878719Abstract: A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.Type: GrantFiled: August 30, 2011Date of Patent: November 4, 2014Assignee: Denso CorporationInventors: Kento Nakabayashi, Tetsuya Katayama, Shin-ichiro Matsuzawa, Masaru Ogawa
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Patent number: 8624784Abstract: The present invention provides, as one aspect, a microstrip array antenna including a dielectric substrate, on a back face of which a conductive grounding plate is formed, and a strip conductor formed on the dielectric substrate. The strip conductor comprises a feeding strip line which extends in an extension direction, and at least two radiation antenna elements. At least one of the antenna elements is connected with one side of the strip line, and at least one of the antenna elements is connected with the other side of the strip line. The longitudinal directions of the antenna elements are parallel to each other and are at an angle of other than 90° with respect to the extension direction. The strip line has a bending shape and fully extends in the extension direction so that the antenna elements are connected with the strip line at the same angle.Type: GrantFiled: December 30, 2009Date of Patent: January 7, 2014Assignee: DENSO CORPORATIONInventors: Akiyoshi Mizutani, Tetsuya Katayama, Kento Nakabayashi
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Publication number: 20120050094Abstract: A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.Type: ApplicationFiled: August 30, 2011Publication date: March 1, 2012Applicant: DENSO CORPORATIONInventors: Kento Nakabayashi, Tetsuya Katayama, Shin-ichiro Matsuzawa, Masaru Ogawa
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Patent number: 8047653Abstract: An Si—O containing hydrogenated carbon film as an optical film has a refractive index in a range from at least 1.48 to at most 1.85 for light of 520 nm wavelength and an extinction coefficient of less than 0.15 for light of 248 nm wavelength, wherein the refractive index and the extinction coefficient are decreased with energy beam irradiation. By utilizing such an Si—O containing hydrogenated carbon film, it is possible to provide various types of optical elements and an optical device including the same.Type: GrantFiled: October 31, 2007Date of Patent: November 1, 2011Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yoshihiro Akahane, Takahiro Imai, Takashi Matsuura, Tetsuya Katayama, Toshihiko Ushiro
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Publication number: 20100171666Abstract: The present invention provides, as one aspect, a microstrip array antenna including a dielectric substrate, on a back face of which a conductive grounding plate is formed, and a strip conductor formed on the dielectric substrate. The strip conductor comprises a feeding strip line which extends in an extension direction, and at least two radiation antenna elements. At least one of the antenna elements is connected with one side of the strip line, and at least one of the antenna elements is connected with the other side of the strip line. The longitudinal directions of the antenna elements are parallel to each other and are at an angle of other than 90° with respect to the extension direction. The strip line has a bending shape and fully extends in the extension direction so that the antenna elements are connected with the strip line at the same angle.Type: ApplicationFiled: December 30, 2009Publication date: July 8, 2010Applicant: DENSO CORPORATIONInventors: Akiyoshi MIZUTANI, Tetsuya KATAYAMA, Kento NAKABAYASHI
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Patent number: 7688164Abstract: A microstrip line includes a signal strip conductor and a ground conductor. A coplanar line includes two regions. A first region includes a signal strip conductor which is connected to the signal strip conductor of the microstrip line via a wire or the like and a ground strip conductor which continues to the ground conductor. A second region is formed with a ground strip conductor formed above the ground strip conductor via a through hole. A transmission mode changes itself in the microstrip line, the first region of the coplanar line, and the second region of the coplanar line in the sequence as described. This enables converting the transmission mode efficiently from the microstrip line to the coplanar line.Type: GrantFiled: September 27, 2007Date of Patent: March 30, 2010Assignee: Denso CorporationInventors: Tetsuya Katayama, Hisanori Uda
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Publication number: 20100039707Abstract: An Si—O containing hydrogenated carbon film as an optical film has a refractive index in a range from at least 1.48 to at most 1.85 for light of 520 nm wavelength and an extinction coefficient of less than 0.15 for light of 248 nm wavelength, wherein the refractive index and the extinction coefficient are decreased with energy beam irradiation. By utilizing such an Si—O containing hydrogenated carbon film, it is possible to provide various types of optical elements and an optical device including the same.Type: ApplicationFiled: October 31, 2007Publication date: February 18, 2010Applicant: Sumitomo Electric Industries, Ltd.Inventors: Yoshihiro Akahane, Takahiro Imai, Takashi Matsuura, Tetsuya Katayama, Toshihiko Ushiro
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Publication number: 20080296050Abstract: A semiconductor chip mounting board comprises an insulating substrate and a plurality of input or output ports to be connected to a semiconductor chip for processing a high-frequency signal. The semiconductor chip has on top thereof a chip ground layer structured by a metal layer. The insulating substrate comprises a strip line formed on top thereof and to be connected to the ports, and a cavity, or a recessed space, for embedding the semiconductor chip therein. The substrate further comprises a common ground made of metal and exposed to the bottom face of the cavity, a coplanar line connected to the strip line, triple parallel bonding wires connecting the connecting terminals of the chip and the coplanar line, and embedded conductors embedded at least in portions of an annular groove or annular gap defined between the inner wall surface of the cavity and the side faces of the chip.Type: ApplicationFiled: April 25, 2008Publication date: December 4, 2008Applicant: DENSO CORPORATIONInventors: Hisanori Uda, Tetsuya Katayama
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Publication number: 20080211604Abstract: A microstrip line includes a signal strip conductor and a ground conductor. A coplanar line includes two regions. A first region includes a signal strip conductor which is connected to the signal strip conductor of the microstrip line via a wire or the like and a ground strip conductor which continues to the ground conductor. A second region is formed with a ground strip conductor formed above the ground strip conductor via a through hole. A transmission mode changes itself in the microstrip line, the first region of the coplanar line, and the second region of the coplanar line in the sequence as described. This enables converting the transmission mode efficiently from the microstrip line to the coplanar line.Type: ApplicationFiled: September 27, 2007Publication date: September 4, 2008Inventors: Tetsuya Katayama, Hisanori Uda
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Waveguide transmission line converter where the open end of the waveguide has a beveled inner corner
Patent number: 7274269Abstract: A waveguide-transmission line converter has a waveguide including side walls which have inner corners at an open end of the waveguide. The inner corners are beveled to provide tapered inner surfaces. Even if a dielectric substrate is assembled out of alignment with the waveguide due to an assembling error, edges of a ground metal layer on the dielectric substrate are exposed from the beveled inner corners at the open end of the waveguide. The beveled inner corners keep the waveguide spaced widely from edges of a matching element on the dielectric substrate, preventing an electric field concentration from occurring between the waveguide and the matching element. The waveguide-transmission line converter has electromagnetic energy passing and reflecting characteristics prevented from varying.Type: GrantFiled: June 17, 2005Date of Patent: September 25, 2007Assignee: DENSO CorporationInventors: Kent Nakabayashi, Tetsuya Katayama -
Patent number: 7107182Abstract: A test support process and a test support program for producing a post-update test pattern when a program under test is updated. When a program under development is updated, a post-update operation description defining details of an operation of a function included in the program under development after the update is acquired. Next, a pre-update operation description having high commonality with the post-update operation description is selected from among pre-update operation descriptions defining details of operations of functions included in the program under development before the update. A pre-update test pattern for an operational test of the selected pre-update operation description is extracted from among pre-update test patterns prepared for operational tests of the program under development before the update. A post-update test pattern for an operational test of the post-update operation description is generated by inheriting at least a portion of the extracted pre-update test pattern.Type: GrantFiled: September 25, 2003Date of Patent: September 12, 2006Assignee: Fujitsu LimitedInventors: Ryoko Fujikawa, Goro Ito, Tetsuya Katayama, Yasunobu Tominaga, Satoru Kawashima, Hitoshi Saito, Masanori Hasegawa
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Publication number: 20050283763Abstract: This invention is to provide a technique for automatically performing a test of exception handling in a program created by using an object-oriented programming language. The method according to this invention comprises: analyzing a source program to be tested; generating a driver class for invoking a method of classes included in the source program to be tested; storing data of lines in the source program to be tested, which are executed by the driver class, so as to correspond to the driver class; extracting the driver class for causing a line for invoking a specific method having a possibility that an exception occurs to be executed; generating an exception occurrence stub class as a class having a same name as a name of a specific class, wherein the exception occurrence stub class has a method, which generates the exception and has a same name as a name of the specific method; and executing the driver class and the exception occurrence stub class, and storing execution result data.Type: ApplicationFiled: September 24, 2004Publication date: December 22, 2005Applicant: Fujitsu LimitedInventors: Ryoko Fujikawa, Tetsuya Katayama, Kinya Miyazaki
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Publication number: 20050280480Abstract: A waveguide-transmission line converter has a waveguide including side walls which have inner corners at an open end of the waveguide. The inner corners are beveled to provide tapered inner surfaces. Even if a dielectric substrate is assembled out of alignment with the waveguide due to an assembling error, edges of a ground metal layer on the dielectric substrate are exposed from the beveled inner corners at the open end of the waveguide. The beveled inner corners keep the waveguide spaced widely from edges of a matching element on the dielectric substrate, preventing an electric field concentration from occurring between the waveguide and the matching element. The waveguide-transmission line converter has electromagnetic energy passing and reflecting characteristics prevented from varying.Type: ApplicationFiled: June 17, 2005Publication date: December 22, 2005Applicant: DENSO CorporationInventors: Kent Nakabayashi, Tetsuya Katayama
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Patent number: 6856277Abstract: In the on-vehicle radar apparatus of the present invention, the vertical scanning width of the radar beam is narrowed, before the horizontal scanning, thereby avoiding unnecessary data processing and improving the data processing efficiently. Further, the S/N ratio of the target detection signal is increased, thereby stabilizing the distance detection and its accuracy. The vertical scanning antenna is a single travelling wave excitation antenna (TWEA) constructed by a plurality of antenna elements. At the same time, the horizontal scanning antenna is a multi-channel antenna wherein a plurality of TWEAs is assigned to a plurality of horizontal directions. The horizontal scanning angle is arbitrarily widened by increasing the number of TWEAs.Type: GrantFiled: September 8, 2003Date of Patent: February 15, 2005Assignee: Denso CorporationInventors: Tetsuya Katayama, Yuichi Tanaka
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Publication number: 20040145513Abstract: In the on-vehicle radar apparatus of the present invention, the vertical scanning width of the radar beam is narrowed, before the horizontal scanning, thereby avoiding unnecessary data processing and improving the data processing efficiently. Further, the SIN ratio of the target detection signal is increased, thereby stabilizing the distance detection and its accuracy. The vertical scanning antenna is a single travelling wave excitation antenna (TWEA) constructed by a plurality of antenna elements. At the same time, the horizontal scanning antenna is a multi-channel antenna wherein a plurality of TWEAs is assigned to a plurality of horizontal directions. The horizontal scanning angle is arbitrarily widened by increasing the number of TWEAs.Type: ApplicationFiled: September 8, 2003Publication date: July 29, 2004Inventors: Tetsuya Katayama, Yuichi Tanaka
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Publication number: 20040060039Abstract: A test support process and a test support program for producing a post-update test pattern when a program under test is updated. When a program under development is updated, a post-update operation description defining details of an operation of a function included in the program under development after the update is acquired. Next, a pre-update operation description having high commonality with the post-update operation description is selected from among pre-update operation descriptions defining details of operations of functions included in the program under development before the update. A pre-update test pattern for an operational test of the selected pre-update operation description is extracted from among pre-update test patterns prepared for operational tests of the program under development before the update. A post-update test pattern for an operational test of the post-update operation description is generated by inheriting at least a portion of the extracted pre-update test pattern.Type: ApplicationFiled: September 25, 2003Publication date: March 25, 2004Applicant: FUJITSU LIMITEDInventors: Ryoko Fujikawa, Goro Ito, Tetsuya Katayama, Yasunobu Tominaga, Satoru Kawashima, Hitoshi Saito, Masanori Hasegawa