Patents by Inventor Kenjiro Takemura
Kenjiro Takemura 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: 11560557Abstract: Articles of manufacture, including an apparatus for acoustic wave based agglomeration, are provided. The apparatus may include a well and an acoustic wave device. The well may be configured to hold a suspension that includes a plurality of particles. The acoustic wave device may be configured to generate a plurality of acoustic waves. The plurality of acoustic waves inducing acoustic streaming within the suspension. The acoustic streaming agitating the suspension to form an agglomerate comprising at least a portion of the plurality of particles. Methods for acoustic wave based agglomeration are also provided.Type: GrantFiled: November 17, 2017Date of Patent: January 24, 2023Assignee: The Regents of the University of CaliforniaInventors: James Friend, Kenjiro Takemura, Yuta Kurashina
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Publication number: 20210054330Abstract: An ultrasonic transducer (10) emits ultrasonic waves toward a culture solution (3) stored with cells (2) in a culture vessel (1). An acquirer acquires information indicating a settling state of the cells (2) in the culture solution (3). A controller controls an operation of the ultrasonic transducer (10) based on the information indicating the settling state of the cells (2).Type: ApplicationFiled: July 5, 2018Publication date: February 25, 2021Applicants: Mitsubishi Electric Corporation, Keio UniversityInventors: Osamu TAKAHARA, Kazuhide KODEKI, Akira MORIKAWA, Tetsushi AZUMA, Kenjiro TAKEMURA, Yuta KURASHINA, Genichiro FUJII
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Publication number: 20190359968Abstract: Articles of manufacture, including an apparatus for acoustic wave based agglomeration, are provided. The apparatus may include a well and an acoustic wave device. The well may be configured to hold a suspension that includes a plurality of particles. The acoustic wave device may be configured to generate a plurality of acoustic waves. The plurality of acoustic waves inducing acoustic streaming within the suspension. The acoustic streaming agitating the suspension to form an agglomerate comprising at least a portion of the plurality of particles. Methods for acoustic wave based agglomeration are also provided.Type: ApplicationFiled: November 17, 2017Publication date: November 28, 2019Inventors: James Friend, Kenjiro Takemura, Yuta Kurashina
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Patent number: 7124870Abstract: A mechanism for mechanically coupling a driving source and a driven member. The mechanism includes a first member coupled to the driving source and a second member coupled to the driven member. A resilient member exerts a force to bring the first and second members into pressure contact at a contact surface. A vibration is excited in the contact surface of the first member to produce a levitation force, based on an ultrasonic levitation, acting upon the second member. Frictional force between the first member and the second member is changed depending on the levitation force, thereby changing power transmitted between the first member and the second member.Type: GrantFiled: April 9, 2004Date of Patent: October 24, 2006Assignee: Canon Kabushiki KaishaInventors: Kaishi Ohashi, Takashi Maeno, Kenjiro Takemura, Tatsuya Koyama
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Patent number: 6885132Abstract: A control apparatus for a vibration type actuator is disclosed, with which at least three kinds of vibrations are excited, and a desired motion can be carried out with high efficiency. The vibration type actuator includes a rotatable moving member, an elastic member contacting the moving member, and an electro-mechanical energy conversion element exciting at least three different kinds of vibrations in the elastic member by supplying at least three periodic signals having different phases. The control apparatus includes a rotation axis determining unit, a parameter determining unit and a control circuit. The rotation axis determining unit determines a rotation axis for rotating the moving member. The parameter determining unit determines, by using an inverse model, phase and amplitude of the periodical signals.Type: GrantFiled: September 25, 2003Date of Patent: April 26, 2005Assignee: Canon Kabushiki KaishaInventors: Kenjiro Takemura, Shinji Yamamoto, Nobuyuki Kojima, Takashi Maeno
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Patent number: 6819029Abstract: A vibration wave driving apparatus for obtaining driving force in 3D directions comprises a vibration member having a shape that is line-symmetrical with respect to two orthogonal axes, electro-mechanical energy conversion elements which can selectively excite in the vibration member three different types of bending vibrations, which each displace in a direction perpendicular to the two axes, and a driven member which is brought into contact with driving portions of the vibration member and driven by vibration excited in the vibration member.Type: GrantFiled: March 7, 2002Date of Patent: November 16, 2004Assignee: Canon Kabushiki KaishaInventors: Yuuji Ohno, Kenjiro Takemura, Takashi Maeno, Nobuyuki Kojima
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Publication number: 20040206596Abstract: A mechanism for mechanically coupling a driving source and a driven member. The mechanism includes a first member coupled to the driving source and a second member coupled to the driven member. A resilient member exerts a force to bring the first and second members into pressure contact at a contact surface. A vibration is excited in the contact surface of the first member to produce a levitation force, based on an ultrasonic levitation, acting upon the second member. Frictional force between the first member and the second member is changed depending on the levitation force, thereby changing power transmitted between the first member and the second member.Type: ApplicationFiled: April 9, 2004Publication date: October 21, 2004Applicant: Canon Kabushiki KaishaInventors: Kaishi Ohashi, Takashi Maeno, Kenjiro Takemura, Tatsuya Koyama
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Publication number: 20040124742Abstract: A control apparatus for a vibration type actuator is disclosed, with which at least three kinds of vibrations are excited, and a desired motion can be carried out with high efficiency. The vibration type actuator includes a rotatable moving member, an elastic member contacting the moving member, and an electro-mechanical energy conversion element exciting at least three different kinds of vibrations in the elastic member by supplying at least three periodic signals having different phases. The control apparatus includes a rotation axis determining unit, a parameter determining unit and a control circuit. The rotation axis determining unit determines a rotation axis for rotating the moving member. The parameter determining unit determines, by using an inverse model, phase and amplitude of the periodical signals.Type: ApplicationFiled: September 25, 2003Publication date: July 1, 2004Applicant: CANON KABUSHIKI KAISHAInventors: Kenjiro Takemura, Shinji Yamamoto, Nobuyuki Kojima, Takashi Maeno
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Publication number: 20020145363Abstract: The invention is to provide a vibration wave driving apparatus for obtaining driving force in 3D direction. For achieving such purpose, a vibration wave driving apparatus comprises a vibration member having a shape line symmetrical with respect to two orthogonal axes, electromechanical energy conversion elements which can excite three different types of bending vibrations, in the vibration member, which displace in a direction perpendicular to the two axes, and a driven member which is brought into contact with driving portions of the vibration member and driven by vibrations excited in the vibration member.Type: ApplicationFiled: March 7, 2002Publication date: October 10, 2002Applicant: Canon Kabushiki KaishaInventors: Yuuji Ohno, Kenjiro Takemura, Takashi Maeno, Nobuyuki Kojima
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Patent number: 6404104Abstract: A vibration type actuator comprises a vibration member for generating vibration displacements in at least three different directions and a contact member in contact with the vibration member. In the actuator the vibration displacements in at least three different directions are excited in the vibration member to generate synthetic vibrations that cause relative movement between the vibration member and contact member in a desired direction.Type: GrantFiled: November 23, 1998Date of Patent: June 11, 2002Assignee: Canon Kabushiki KaishaInventors: Takashi Maeno, Kenjiro Takemura, Ichiro Okumura, Nobuyuki Kojima
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Patent number: 6380660Abstract: The present invention relates to a vibration type actuator or a vibration type driving apparatus that includes a vibration member that generates therein respective vibration displacements in at least three different directions, and a plurality of contact members contacting the vibration member, wherein the respective vibration displacements in the three different directions generate a composite vibration that simultaneously moves selected contact members of the plurality of contact members relative to the vibration member.Type: GrantFiled: May 11, 2000Date of Patent: April 30, 2002Assignee: Canon Kabushiki KaishaInventors: Takashi Maeno, Ichiro Okumura, Nobuyuki Kojima, Kenjiro Takemura