Patents by Inventor Akihiro Tomita
Akihiro Tomita 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: 20220322666Abstract: Provided are a herbicidal composition and a method for controlling weeds that have a superior weed controlling effect. The present herbicidal composition comprises one or more uracil compounds selected from the group consisting of a compound represented by formula (I) and a compound represented by formula (II), and one or more compounds selected from the group consisting of the herbicide compound group B and the safener group C, wherein a weight ratio of the uracil compounds to one or more compounds selected from the group consisting of the herbicide compound group B and the safener group C is 1:0.Type: ApplicationFiled: August 27, 2020Publication date: October 13, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yoshinobu JIN, Akihiro TOMITA
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Publication number: 20220322665Abstract: Provided is a method for effectively controlling specific weeds having resistance to herbicides. The method comprises applying one or more uracil compounds selected from a group consisting of a compound represented by formula (I): and a compound represented by formula (II): to a PPO inhibitor-resistant weed which has one or more mutations selected from a group consisting of Arg128Met mutation, Arg128Gly mutation, Arg128His mutation, Arg128Ile mutation, Arg128Lys mutation, and Gly399Ala mutation in PPO.Type: ApplicationFiled: August 4, 2020Publication date: October 13, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yoshinobu JIN, Akihiro TOMITA
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Patent number: 10946890Abstract: Provided is a steering control unit for improving influence of fluctuations in an estimated electrical angle on steering feel. A steering control unit includes a microcomputer that performs sensorless control of the driving of a motor by using an estimated electrical angle estimated by calculation. The microcomputer calculates the estimated electrical angle from a value that is obtained by selectively accumulating a first additional angle or a second additional angle. The microcomputer adjusts a vibration component of fluctuations in the estimated electrical angle by varying the amount of change in the first additional angle and the second additional angle.Type: GrantFiled: November 15, 2018Date of Patent: March 16, 2021Assignee: JTEKT CORPORATIONInventors: Hidenori Itamoto, Takashi Kageyama, Toshie Hibi, Akihiro Tomita
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Patent number: 10577015Abstract: Provided is a steering control apparatus capable of executing driving assistance control even during rotation angle sensor-less control. When an induced voltage generated in a motor is equal to or lower than a threshold voltage at an early stage of execution of the rotation angle sensor-less control and when the driving assistance control is executed based on a command value from a higher-level control apparatus, a second pre-addition angle that is based on the command value is used as a second addition angle in place of a first pre-addition angle that is based on a steering torque. Therefore, even in a situation in which the steering torque is not detected due to, for example, execution of driving assistance, an estimated electrical angle of the motor is calculated by integrating the second addition angle. Then, driving of the motor is controlled based on the calculated estimated electrical angle.Type: GrantFiled: October 31, 2018Date of Patent: March 3, 2020Assignee: JTEKT CORPORATIONInventors: Hidenori Itamoto, Takashi Kageyama, Toshie Hibi, Akihiro Tomita
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Publication number: 20190152516Abstract: A steering control unit includes a microcomputer that performs sensorless control of driving of a motor by using an estimated electrical angle estimated by calculation. The microcomputer has a first estimation calculation state and a second estimation calculation state. In the first estimation calculation state, the microcomputer calculates the estimated electrical angle from a value obtained by accumulating a first additional angle calculated by a first additional angle calculation circuit on the basis of a voltage induced in the motor. In the second estimation calculation state, the microcomputer calculates the estimated electrical angle from a value obtained by accumulating a second additional angle calculated by a second additional angle calculation circuit that performs torque feedback control that causes steering torque to follow a target torque value. In a low steering velocity state, the microcomputer calculates the estimated electrical angle in the second estimation calculation state.Type: ApplicationFiled: November 15, 2018Publication date: May 23, 2019Applicant: JTEKT CORPORATIONInventors: Hidenori ITAMOTO, Takashi KAGEYAMA, Toshie HIBI, Akihiro TOMITA
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Publication number: 20190152514Abstract: Provided is a steering control unit for improving influence of fluctuations in an estimated electrical angle on steering feel. A steering control unit includes a microcomputer that performs sensorless control of the driving of a motor by using an estimated electrical angle estimated by calculation. The microcomputer calculates the estimated electrical angle from a value that is obtained by selectively accumulating a first additional angle or a second additional angle. The microcomputer adjusts a vibration component of fluctuations in the estimated electrical angle by varying the amount of change in the first additional angle and the second additional angle.Type: ApplicationFiled: November 15, 2018Publication date: May 23, 2019Applicant: JTEKT CORPORATIONInventors: Hidenori ITAMOTO, Takashi KAGEYAMA, Toshie HIBI, Akihiro TOMITA
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Publication number: 20190135334Abstract: Provided is a steering control apparatus capable of executing driving assistance control even during rotation angle sensor-less control. When an induced voltage generated in a motor is equal to or lower than a threshold voltage at an early stage of execution of the rotation angle sensor-less control and when the driving assistance control is executed based on a command value from a higher-level control apparatus, a second pre-addition angle that is based on the command value is used as a second addition angle in place of a first pre-addition angle that is based on a steering torque. Therefore, even in a situation in which the steering torque is not detected due to, for example, execution of driving assistance, an estimated electrical angle of the motor is calculated by integrating the second addition angle. Then, driving of the motor is controlled based on the calculated estimated electrical angle.Type: ApplicationFiled: October 31, 2018Publication date: May 9, 2019Applicant: JTEKT CORPORATIONInventors: Hidenori ITAMOTO, Takashi KAGEYAMA, Toshie HIBI, Akihiro TOMITA
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Patent number: 9461568Abstract: In a state in which the energization in the first direction is possible between the motor and the drive circuit and the motor is not rotating at high speed, when the phase induced voltage value of the specific phase that is the target of determination is continuously equal to or smaller than the abnormality determination threshold, the abnormality detecting unit determines that an open malfunction has occurred in the relay FET of the specific phase.Type: GrantFiled: July 2, 2012Date of Patent: October 4, 2016Assignee: JTEKT CORPORATIONInventors: Akihiro Tomita, Satoru Mikamo, Hiroshi Kawamura, Toshihiro Takahashi, Jun Hasegawa, Akira Nambu, Kenichiro Aoki, Eiji Kasai
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Patent number: 8766589Abstract: In a motor control unit, a current-carrying failure detection unit determines a first determination condition and a second determination condition. The current-carrying failure detection unit measures a duration of a state where the first determination condition is satisfied, and a duration of a state where the second determination condition is satisfied. When the first or second duration exceeds a predetermined reference period, the current-carrying failure detection unit determines that a current-carrying failure has occurred.Type: GrantFiled: April 19, 2012Date of Patent: July 1, 2014Assignee: JTEKT CorporationInventors: Toshihiro Takahashi, Satoru Mikamo, Hiroshi Kawamura, Jun Hasegawa, Akihiro Tomita, Akira Nambu
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Publication number: 20140139158Abstract: In a state in which the energization in the first direction is possible between the motor and the drive circuit and the motor is not rotating at high speed, when the phase induced voltage value of the specific phase that is the target of determination is continuously equal to or smaller than the abnormality determination threshold, the abnormality detecting unit determines that an open malfunction has occurred in the relay FET of the specific phase.Type: ApplicationFiled: July 2, 2012Publication date: May 22, 2014Applicant: JTEKT CORPORATIONInventors: Akihiro Tomita, Satoru Mikamo, Hiroshi Kawamura, Toshihiro Takahashi, Jun Hasegawa, Akira Nambu, Kenichiro Aoki, Eiji Kasai
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Patent number: 8558534Abstract: An ECU detects a steering angle that is an absolute angle based on a sine signal and a cosine signal that are output from a steering sensor. The ECU includes a three-phase pulse generator that generates, based on the sine signal and the cosine signal, three-phase pulse signals that have edges corresponding to predetermined rotational angles and that are set in such a manner that the predetermined rotational angles corresponding to the respective edges do not overlap each other and are at regular intervals. A microcomputer has a function as a second rotational angle detector that calculates a steering angle based on the pulse signals.Type: GrantFiled: September 29, 2010Date of Patent: October 15, 2013Assignee: JTEKT CorporationInventor: Akihiro Tomita
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Patent number: 8496927Abstract: It is intended to provide a tool, a procedure and so on which are useful in developing a therapeutic strategy efficacious in inhibiting or overcoming the resistance against a CD20-directed molecular-targeted drug. Thus, a CD20-negatively converted B-cell malignant lymphocyte cell line is provided. Also, a model animal indicating the pathological conditions of CD20-negatively converted B-cell malignant lymphocyte is provided. Further, a method of screening a substance, which is efficacious against CD20-positive B-cell malignant lymphocyte or CD20-negatively converted B cell malignant lymphocyte, is provided. Furthermore, a drug against CD20-positive B-cell malignant lymphocyte or CD20-negatively converted B-cell malignant lymphocyte, which is characterized by being used together with a CD20-directed molecular-targeted drug, is provided. In one embodiment, a DNA methylase inhibitor or a histone deacetylase inhibitor is employed as the active ingredient.Type: GrantFiled: September 21, 2007Date of Patent: July 30, 2013Assignee: National University Corporation Nagoya UniversityInventors: Tomoki Naoe, Akihiro Tomita, Junji Hiraga
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Patent number: 8425100Abstract: A luminous button device includes: a button base which is integrally formed of a transmissive material; and a button cap which is integrally formed of a non-transmissive material and is fitted to the button base, wherein the button cap includes a cap body; a pair of arm portions which extends from the rear surface of the cap body with a gap interposed therebetween; and a pair of locking claws which is formed at the front ends of the pair of arm portions, and wherein the button base includes a movable portion which is movable in the direction of pressing a switch disposed on the rear surface side of the button base in accordance with a pressing force from the front button surface side; and a support portion which supports the movable portion so as to be movable in the direction.Type: GrantFiled: February 3, 2011Date of Patent: April 23, 2013Assignee: Sony CorporationInventors: Takahiro Akabori, Takayuki Tateno, Shingo Fukutomi, Akihiro Tomita
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Publication number: 20120274260Abstract: In a motor control unit, a current-carrying failure detection unit determines a first determination condition and a second determination condition. The current-carrying failure detection unit measures a duration of a state where the first determination condition is satisfied, and a duration of a state where the second determination condition is satisfied. When the first or second duration exceeds a predetermined reference period, the current-carrying failure detection unit determines that a current-carrying failure has occurred.Type: ApplicationFiled: April 19, 2012Publication date: November 1, 2012Applicant: JTEKT CORPORATIONInventors: Toshihiro TAKAHASHI, Satoru MIKAMO, Hiroshi KAWAMURA, Jun HASEGAWA, Akihiro TOMITA, Akira NAMBU
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Publication number: 20110194303Abstract: A luminous button device includes: a button base which is integrally formed of a transmissive material; and a button cap which is integrally formed of a non-transmissive material and is fitted to the button base, wherein the button cap includes a cap body; a pair of arm portions which extends from the rear surface of the cap body with a gap interposed therebetween; and a pair of locking claws which is formed at the front ends of the pair of arm portions, and wherein the button base includes a movable portion which is movable in the direction of pressing a switch disposed on the rear surface side of the button base in accordance with a pressing force from the front button surface side; and a support portion which supports the movable portion so as to be movable in the direction.Type: ApplicationFiled: February 3, 2011Publication date: August 11, 2011Inventors: Takahiro Akabori, Takayuki Tateno, Shingo Fukutomi, Akihiro Tomita
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Publication number: 20110080160Abstract: An ECU detects a steering angle that is an absolute angle based on a sine signal and a cosine signal that are output from a steering sensor. The ECU includes a three-phase pulse generator that generates, based on the sine signal and the cosine signal, three-phase pulse signals that have edges corresponding to predetermined rotational angles and that are set in such a manner that the predetermined rotational angles corresponding to the respective edges do not overlap each other and are at regular intervals. A microcomputer has a function as a second rotational angle detector that calculates a steering angle based on the pulse signals.Type: ApplicationFiled: September 29, 2010Publication date: April 7, 2011Applicant: JTEKT CORPORATIONInventor: Akihiro TOMITA
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Patent number: 7913805Abstract: A rotational angle sensor used in an electric power steering apparatus detects a rotational angle of a motor shaft at a portion on a steering system side, as a motor rotational angle (?m). A MPU sets a base correction amount (???m) based on a q-axis actual current value (Iq). The MPU sets a rotational angle correction amount (??m) used to correct the motor rotational angle (?m) by decreasing the base correction amount (???m) as a rotational angular speed (?) increases and by increasing the base correction amount (???m) as a torque differential value (dT/dt) increases.Type: GrantFiled: January 15, 2010Date of Patent: March 29, 2011Assignee: JTEKT CorporationInventors: Akihiro Tomita, Atsuo Sakai, Satoru Mikamo
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Publication number: 20100181140Abstract: A rotational angle sensor used in an electric power steering apparatus detects a rotational angle of a motor shaft at a portion on a steering system side, as a motor rotational angle (?m). A MPU sets a base correction amount (???m) based on a q-axis actual current value (Iq). The MPU sets a rotational angle correction amount (??m) used to correct the motor rotational angle (?m) by decreasing the base correction amount (???m) as a rotational angular speed (?) increases and by increasing the base correction amount (???m) as a torque differential value (dT/dt) increases.Type: ApplicationFiled: January 15, 2010Publication date: July 22, 2010Applicant: JTEKT CORPORATIONInventors: Akihiro TOMITA, Atsuo SAKAI, Satoru MIKAMO
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Publication number: 20100037328Abstract: It is intended to provide a tool, a procedure and so on which are useful in developing a therapeutic strategy efficacious in inhibiting or overcoming the resistance against a CD20-directed molecular-targeted drug. Thus, a CD20-negatively converted B-cell malignant lymphocyte cell line is provided. Also, a model animal indicating the pathological conditions of CD20-negatively converted B-cell malignant lymphocyte is provided. Further, a method of screening a substance, which is efficacious against CD20-positive B-cell malignant lymphocyte or CD20-negatively converted B cell malignant lymphocyte, is provided. Furthermore, a drug against CD20-positive B-cell malignant lymphocyte or CD20-negatively converted B-cell malignant lymphocyte, which is characterized by being used together with a CD20-directed molecular-targeted drug, is provided. In one embodiment, a DNA methylase inhibitor or a histone deacetylase inhibitor is employed as the active ingredient.Type: ApplicationFiled: September 21, 2007Publication date: February 11, 2010Applicant: National University corporation Nagoya UniversityInventors: Tomoki Naoe, Akihiro Tomita, Junji Hiraga
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Patent number: 6957713Abstract: In a steering angle detection device for an electric power steering apparatus, a steering wheel shaft rotation angle is derived by calculating a rotation angle signal which corresponds to a rotation angle of a steering wheel shaft within a single rotation, based upon detection signals of first and second resolvers which detect the rotation angle of the steering wheel shaft and which have different pole pair numbers. A third resolver detects, as a motor rotation angle, a rotation angle of an output shaft of an electric motor that imparts assistance force to an output member of a steering gear having a reduction ratio that varies in accordance with a steering angle of the steering wheel from a straight ahead position.Type: GrantFiled: April 16, 2004Date of Patent: October 25, 2005Assignee: Toyoda Koki Kabushiki KaishaInventor: Akihiro Tomita