Patents by Inventor Katsuhiko Tsuchida
Katsuhiko Tsuchida 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: 20230414564Abstract: Provided is a chemical agent effective for inhibiting blue light-induced oxidation, and a screening method for the same. A blue light oxidation inhibitor comprising one or more compounds selected from the group consisting of compounds including the structure of formula I, L(+)-ascorbic acid compounds and pantetheine-S-sulfonic acid-containing compounds is effective for inhibiting oxidation induced by blue light.Type: ApplicationFiled: November 29, 2021Publication date: December 28, 2023Applicant: SHISEIDO COMPANY, LTD.Inventors: Katsuhiko TSUCHIDA, Natsuki SAKIYAMA
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Patent number: 8698503Abstract: A geomagnetic application device including a triaxial magnetic sensor, a measurement point acquiring mechanism, a calibration mechanism calibrating offset of the magnetic sensor, and an azimuth calculator. The calibration mechanism includes an offset calculation measurement point selector selecting at least six measurement points of the geomagnetic vectors from among a data set stored in the measurement point storage unit by the measurement point acquiring mechanism and storing the selected measurement points in an offset calculation measurement point storage unit. The offset calculation measurement point selector selects the measurement points from among the data set stored in the measurement point storage unit to include at least six points, component values of which are maximum or minimum in each of three orthogonal axes.Type: GrantFiled: January 30, 2012Date of Patent: April 15, 2014Assignee: Aichi Micro Intelligent CorporationInventors: Yoshinobu Honkura, Katsuhiko Tsuchida, Eiji Kako, Ryuji Masaki
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Publication number: 20130307547Abstract: A geomagnetic application device including a triaxial magnetic sensor, a measurement point acquiring mechanism, a calibration mechanism calibrating offset of the magnetic sensor, and an azimuth calculator. The calibration mechanism includes an offset calculation measurement point selector selecting at least six measurement points of the geomagnetic vectors from among a data set stored in the measurement point storage unit by the measurement point acquiring mechanism and storing the selected measurement points in an offset calculation measurement point storage unit. The offset calculation measurement point selector selects the measurement points from among the data set stored in the measurement point storage unit to include at least six points, component values of which are maximum or minimum in each of three orthogonal axes.Type: ApplicationFiled: January 30, 2012Publication date: November 21, 2013Applicant: Aichi Micro Intelligent CorporationInventors: Yoshinobu Honkura, Katsuhiko Tsuchida, Eiji Kako, Ryuji Masaki
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Patent number: 7278219Abstract: A magnetic compass includes: a three-axis magnetic sensor for detecting geomagnetic vector as geomagnetic components in directions of three orthogonal axes x, y, and z; a data-plane calculating unit for calculating a data plane on which output data of the three-axis magnetic sensor are present in a sensor coordinate system of the three axes x, y, and z; a unit vector calculating unit for calculating unit vectors of a horizontal coordinate system of three orthogonal axes X, Y, and Z whose Z-axis runs vertically and X-Y plane defines a horizontal plane relative to the earth; a horizontal coordinate system conversion unit for converting geomagnetic components in the sensor coordinate system detected by the three-axis magnetic sensor into geomagnetic components in the horizontal coordinate system; an azimuth calculating unit for calculating azimuth based on the converted geomagnetic components in the horizontal coordinate system; and a display unit for displaying the calculated azimuth.Type: GrantFiled: June 2, 2006Date of Patent: October 9, 2007Assignee: Aichi Micro Intelligent CorporationInventors: Yoshinobu Honkura, Katsuhiko Tsuchida, Hitoshi Aoyama, Eiji Kako
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Publication number: 20070084070Abstract: A magnetic compass includes: a three-axis magnetic sensor for detecting geomagnetic vector as geomagnetic components in directions of three orthogonal axes x, y, and z; a data-plane calculating unit for calculating a data plane on which output data of the three-axis magnetic sensor are present in a sensor coordinate system of the three axes x, y, and z; a unit vector calculating unit for calculating unit vectors of a horizontal coordinate system of three orthogonal axes X, Y, and Z whose Z-axis runs vertically and X-Y plane defines a horizontal plane relative to the earth; a horizontal coordinate system conversion unit for converting geomagnetic components in the sensor coordinate system detected by the three-axis magnetic sensor into geomagnetic components in the horizontal coordinate system; an azimuth calculating unit for calculating azimuth based on the converted geomagnetic components in the horizontal coordinate system; and a display unit for displaying the calculated azimuth.Type: ApplicationFiled: June 2, 2006Publication date: April 19, 2007Applicant: AICHI MICRO INTELLIGENT CORPORATIONInventors: Yoshinobu Honkura, Katsuhiko Tsuchida, Hitoshi Aoyama, Eiji Kako
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Publication number: 20060190174Abstract: An electronic compass and direction finding method includes a geomagnetic direction sensor having two sensor elements for detecting perpendicular components of the Earth's magnetic field vector. A microcomputer is coupled to the geomagnetic direction sensor to compute a heading of a vehicle in software. Even if the electronic compass displays directional errors due to magnetization of the vehicle, a center of an azimuth circle can be immediately corrected by a center calculating means and a relatively accurate heading can be displayed. Later, the center of the azimuth circle can be corrected with a higher accuracy by a least squares calculating means. This frees a vehicle driver from uneasiness due to display of an intelligible direction.Type: ApplicationFiled: February 23, 2006Publication date: August 24, 2006Applicant: AICHI MICRO INTELLIGENT CORPORATIONInventors: Xueping Li, Hitoshi Aoyama, Yoshinobu Honkura, Eiji Kako, Katsuhiko Tsuchida