Patents by Inventor Akira Doi
Akira Doi 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: 11953315Abstract: A vehicle wheel assembly position measurement apparatus measures, at each of at least three measurement positions in a circumferential direction, a distance in a vehicle width direction between each of plural measurement points located on a specified line that crosses a lateral surface of a tire section from an inner circumferential end to an outer circumferential end and a respective one of distance measuring instruments, calculates an approximate curve indicating a relationship between a position in an extending direction of the specified line and the distance of each of the measurement points at the respective measurement position, calculates a rotation center position of a wheel assembly from a specific position of the approximate curve at the measurement position, and calculates a height position of the wheel assembly relative to a vehicle body from the rotation center position and a height position of a specified portion of the vehicle body.Type: GrantFiled: September 3, 2020Date of Patent: April 9, 2024Assignee: MAZDA MOTOR CORPORATIONInventors: Taiga Inoue, Akira Fukunaga, Yoko Doi
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Patent number: 11929230Abstract: A large current electron beam is stably emitted from an electron gun of a charged particle beam device. The electron gun of the charged particle beam device includes: a SE tip 202; a suppressor 303 disposed rearward of a distal end of the SE tip; a cup-shaped extraction electrode 204 including a bottom surface and a cylindrical portion and enclosing the SE tip and the suppressor; and an insulator 208 holding the suppressor and the extraction electrode. A shield electrode 301 of a conductive metal having a cylindrical portion 302 is provided between the suppressor and the cylindrical portion of the extraction electrode. A voltage lower than a voltage of the SE tip is applied to the shield electrode.Type: GrantFiled: April 18, 2019Date of Patent: March 12, 2024Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Keigo Kasuya, Akira Ikegami, Kazuhiro Honda, Masahiro Fukuta, Takashi Doi, Souichi Katagiri, Aki Takei, Soichiro Matsunaga
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Patent number: 11912688Abstract: The present invention provides a compound represented by chemical formula (I) or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition containing the same.Type: GrantFiled: February 14, 2020Date of Patent: February 27, 2024Assignee: Tohoku UniversityInventors: Akira Sugawara, Atsushi Yokoyama, Susumu Suzuki, Yoshiharu Iwabuchi, Takayuki Doi
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Publication number: 20220350124Abstract: An image capturing mechanism includes: an optical measurement unit for optically observing a sample; a temperature conditioning unit for heating or cooling the sample, the temperature conditioning unit being mounted on a table by means of a support member; and a moving mechanism for moving the table in order to photograph the sample. The temperature conditioning unit includes: a temperature conditioning part for heating or cooling the sample, abutted on one face of a Peltier device; a heat conducting member abutted on the other face of the Peltier device; and the support member for holding the temperature conditioning part and the heat conducting member and securing the temperature conditioning part and the heat conducting member on the table. At least the heat conducting member is connected to a cooling means, and the thermal conductivity of the support member is low relative to the thermal conductivity of the heat conducting member.Type: ApplicationFiled: July 18, 2019Publication date: November 3, 2022Inventors: Toshifumi MITSUYAMA, Akira DOI, Hitoshi MIYATA, Tomohiro SHOJI
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Patent number: 11342211Abstract: The present disclosure provides a wafer inspection technology that involves less degradation of the image quality even when an object to be observed has a variation in height due to warpage, etc. of a wafer. This wafer inspection apparatus obtains an image with less degradation by: adjusting the focal point of an observation optical system to a height measured by a height sensor for measuring wafer surface heights; and further, correcting a switching signal for a CCD line sensor on the basis of stage position data and optical magnification data corresponding to the height so as to make a correction corresponding to the wafer surface height.Type: GrantFiled: May 30, 2018Date of Patent: May 24, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Akira Doi, Minoru Sasaki, Masaki Hasegawa, Hironori Ogawa, Tomohiko Ogata, Yuko Okada
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Publication number: 20210118710Abstract: The present disclosure provides a wafer inspection technology that involves less degradation of the image quality even when an object to be observed has a variation in height due to warpage, etc. of a wafer. This wafer inspection apparatus obtains an image with less degradation by: adjusting the focal point of an observation optical system to a height measured by a height sensor for measuring wafer surface heights; and further, correcting a switching signal for a CCD line sensor on the basis of stage position data and optical magnification data corresponding to the height so as to make a correction corresponding to the wafer surface height.Type: ApplicationFiled: May 30, 2018Publication date: April 22, 2021Inventors: Akira DOI, Minoru SASAKI, Masaki HASEGAWA, Hironori OGAWA, Tomohiko OGATA, Yuko OKADA
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Publication number: 20190331910Abstract: Provided is a light deflector deflecting a light beam, and including a reflector that reflects the light beam, a first gripper that grips one end of the reflector, a first driver that rotates a first rotating shaft coupled to the first gripper, a second gripper that grips the other end of the reflector, and a second driver that rotates a second rotating shaft coupled to the second gripper.Type: ApplicationFiled: September 25, 2018Publication date: October 31, 2019Inventors: Daisuke MATSUKA, Akira DOI, Mikio TOKUYAMA
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Patent number: 9030060Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.Type: GrantFiled: June 5, 2014Date of Patent: May 12, 2015Assignee: Via Mechanics, Ltd.Inventors: Akihiro Yamamoto, Akira Doi, Daisuke Matsuka, Souichi Toyama, Hiroyuki Sugawara
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Patent number: 9030061Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.Type: GrantFiled: June 5, 2014Date of Patent: May 12, 2015Assignee: Via Mechanics, Ltd.Inventors: Akihiro Yamamoto, Akira Doi, Daisuke Matsuka, Souichi Toyama, Hiroyuki Sugawara
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Publication number: 20140285037Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.Type: ApplicationFiled: June 5, 2014Publication date: September 25, 2014Inventors: Akihiro YAMAMOTO, Akira DOI, Daisuke MATSUKA, Souichi TOYAMA, Hiroyuki SUGAWARA
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Publication number: 20140285036Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.Type: ApplicationFiled: June 5, 2014Publication date: September 25, 2014Inventors: Akihiro YAMAMOTO, Akira DOI, Daisuke MATSUKA, Souichi TOYAMA, Hiroyuki SUGAWARA
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Patent number: 8780429Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.Type: GrantFiled: October 27, 2011Date of Patent: July 15, 2014Assignee: Via Mechanics, Ltd.Inventors: Akihiro Yamamoto, Akira Doi, Daisuke Matsuka, Souichi Toyama, Hiroyuki Sugawara
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Publication number: 20120168136Abstract: In a total heat exchange element, a partition member has a heat transfer property, moisture permeability, and a gas blocking property. A spacer is formed in a hollow cylindrical shape polygonal in section extending substantially in parallel along the surface of the partition member and includes an overlapping wall that overlaps the partition member and supporting walls that rise from side ends of the overlapping wall and are vertically provided between the partition members respectively being upper and lower parts in a laminating direction to retain a space between the partition members. The overlapping wall has thickness smaller than that of the supporting walls and stuck to the partition member with an adhesive having moisture permeability.Type: ApplicationFiled: September 16, 2009Publication date: July 5, 2012Inventors: Masaru Takada, Hajime Sotokawa, Hidemoto Arai, Takanori Imai, Akira Doi
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Publication number: 20120105930Abstract: A galvanoscanner including: a rotor including a shaft as a rotational center, and permanent magnets disposed around the shaft and polarized to a plurality of poles in a circumferential direction of the shaft; and a stator disposed in the outside of the rotor through a clearance and including coils, a yoke, and an outer casing so that the rotor swings in a predetermined angle range; wherein: the permanent magnets are provided with grooves which are formed in a direction of the rotation shaft so as to straddle circumferentially adjacent magnetic poles of the permanent magnets; and the permanent magnets are parted into at least two parts per pole by parting lines. Thus, the ratio of the torque constant to the moment of inertia can be improved so that the current required for driving can be reduced and reduction of power consumption at driving time can be attained.Type: ApplicationFiled: October 27, 2011Publication date: May 3, 2012Applicant: Hitachi Via Mechanics, Ltd.Inventors: Akihiro Yamamoto, Akira Doi, Daisuke Matsuka, Souichi Toyama, Hiroyuki Sugawara
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Publication number: 20120043064Abstract: A total heat exchange element includes a first flow passage and a second flow passage extending orthogonal thereto. The first flow passage is an undulating flow passage that has a rectangular cross section and is formed by positioning a first wave-form plate member and a second wave-form plate member on top of each other and with a predetermined interval therebetween, and further causing spacers to hermetically close two lateral portions with respect to the traveling direction of the fluid. The second flow passage is a straight flow passage that has a substantially triangular cross section and is formed between a flat-plate-like member and one of the first and the second wave-form plate members.Type: ApplicationFiled: April 28, 2009Publication date: February 23, 2012Applicant: Mitsubishi Electric CorporationInventors: Masaru Takada, Hajime Sotokawa, Hidemoto Arai, Akira Doi, Takanori Imai, Kunihiko Kaga, Masaru Shinozaki
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Publication number: 20120037349Abstract: A heat exchange element includes a first flow passage and a second flow passage extending orthogonal thereto. The first flow passage is an undulating flow passage that has a rectangular cross section and is formed by positioning, a first wave-form plate member and a second wave-form plate member on top of each other and with a predetermined interval therebetween, and further causing spacers to hermetically close two lateral portions with respect to the traveling direction of the fluid. The second flow passage is a straight flow passage that has a substantially triangular cross section and is formed between a flat-plate-like member and one of the first and the second wave-form plate members, when the flat-plate-like member is positioned on the wave-like form of the one of the first and the second wave-form plate members so as to be in close contact therewith.Type: ApplicationFiled: April 28, 2009Publication date: February 16, 2012Applicant: Mitsubishi Electric CorporationInventors: Masaru Takada, Hajime Sotokawa, Hidemoto Arai, Takanori Imai, Akira Doi, Kunihiko Kaga, Masaru Shinozaki
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Patent number: 7673668Abstract: Molding sand having a high spherical degree and a low hygroscopicity produced from powder containing Al2O3 and SiO2, as main components by a flame fusion method, from which a mold having an excellent strength and a smooth surface is produced.Type: GrantFiled: December 9, 2003Date of Patent: March 9, 2010Assignee: Kao CorporationInventors: Mikio Sakaguchi, Shigeo Nakai, Kazuhiko Kiuchi, Akira Doi
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Patent number: 7635860Abstract: To increase productivity of organic thin-film transistors, in an organic thin-film transistor manufacturing equipment, a liquid containing at least either one of a wiring material and a semiconductor material is coated on a substrate to form a number of organic thin-film transistors. Substrate carrying means carry the substrate. The substrate is heated by a first heating means, and the temperature of the substrate is controlled by a controller. The liquid containing at least either one of the wiring material and the semiconductor material is heated by a second heating means, and the temperature of this liquid is controlled also by the controller.Type: GrantFiled: January 19, 2007Date of Patent: December 22, 2009Assignee: Hitachi, Ltd.Inventors: Tomohiro Inoue, Akira Doi, Masahiko Ando
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Patent number: 7629714Abstract: A rocking actuator and a laser machining apparatus which can suppress a temperature rise of a permanent magnet in a moving-magnet actuator. Even when a steerable mirror is positioned by rapid and continuous motions, highly reliable machining can be performed without degrading machining throughput or hole position accuracy. A cooling jacket for cooling a casing and heat transfer units brought into contact with a coil and the casing are provided. Heat generated in the coil is introduced to the casing through the heat transfer bypass units. Thus, the temperature rise of the coil is suppressed. Radial grooves are provided in the permanent magnet opposed to the coil so as to prevent an eddy current from appearing therein. Groove depth is made not smaller than skin depth expressed by a function of volume resistivity and permeability of the permanent magnet and a fundamental frequency of a current applied to the coil.Type: GrantFiled: August 3, 2007Date of Patent: December 8, 2009Assignees: Hitachi Via Mechanics, Ltd., National University Corporation Nagoya Institute of TechnologyInventors: Souichi Toyama, Kounosuke Kitamura, Akira Doi, Hiromu Hirai, Kenta Seki, Yoshiaki Kano
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Patent number: 7612479Abstract: A scanner has a rotor, and a stator disposed in the outside of the rotor. The rotor includes a shaft, and a permanent magnet mounted on the outer circumferential side of the shaft. The stator includes a casing, a yoke held in the inner circumferential side of the casing, and coils disposed in the inner circumferential side of the yoke. The permanent magnet of the rotor has radially depressed grooves formed in its outer circumferential portion. The torque constant of the scanner is circumferentially equalized by the grooves.Type: GrantFiled: June 23, 2006Date of Patent: November 3, 2009Assignee: Hitachi Via Mechanics, Ltd.Inventors: Akira Doi, Haruaki Otsuki, Atsushi Sakamoto, Souichi Toyama, Yaichi Okubo