Patents by Inventor Takafumi Goto
Takafumi Goto 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: 11964356Abstract: A hand-held tool, such as a disc grinder, is used to perform work at a high work site, a countermeasure is taken to prevent the hand-held tool from falling by using a suspension tool, such as a tether strap. If a coupling part that couples the suspension tool to the hand-held tool is damaged, this fact is notified to a user. Thereby, an original function of the suspension tool can be reliably performed. If a large impact is applied to a coupling member via a suspension tool, the coupling member is displaced to a second position, due to the deformation of a first position retaining member. A conductive portion disengages from contacts to cause a power circuit to be shut off, thereby prohibiting a main body part from being activated.Type: GrantFiled: March 27, 2019Date of Patent: April 23, 2024Assignee: MAKITA CORPORATIONInventors: Ryosuke Otani, Junya Ishikawa, Takafumi Kotsuji, Satoshi Ninagawa, Ken Goto, Yu Eto
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Publication number: 20240076548Abstract: Provided is a method for enabling recovery of metal element leaching capacity of a deep eutectic solvent used for leaching a metal element from an ore containing the metal element. A method for recycling a hydrophobic deep eutectic solvent disclosed here includes: preparing a hydrophobic deep eutectic solvent used for leaching a metal element from an ore containing the metal element; and bringing the hydrophobic deep eutectic solvent and hydrochloric acid into contact with each other. In the hydrophobic deep eutectic solvent, a hydrogen bond donor is a carboxy group-containing compound, and a hydrogen bond acceptor is chloride salt. The amount of use of the hydrochloric acid is such that hydrogen chloride is 1 mole or more with respect to 1 mole of the hydrogen bond acceptor.Type: ApplicationFiled: August 22, 2023Publication date: March 7, 2024Applicants: Prime Planet Energy & Solutions, Inc., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, TOYOTA TSUSHO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuji YAMAMOTO, Masahiro GOTO, Takafumi HANADA, Takeru MORIYAMA, Momoko PROCTER
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Publication number: 20220180707Abstract: An information processing system is configured to execute: storing game media possessed by a player; storing, in a preliminary period, first group information for identifying game media corresponding to a first game condition in a first storage area and second group information for identifying game media corresponding to a second game condition in a second storage area; storing, in a post period, the second group information in the first storage area; enabling, in the preliminary period, the execution of games using the first and second group information; enabling, in the post period, the execution of a game using the second group information stored in the first storage area and disabling the execution of a game using the first group information; and storing, in the first storage area in the post period, the second group information stored in the second storage area in the preliminary period.Type: ApplicationFiled: March 1, 2022Publication date: June 9, 2022Applicant: CYGAMES, INC.Inventors: Takatoshi Nakamura, Yuki Okabe, Takashi Ueno, Takafumi Goto, Kensuke Nakata
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Publication number: 20220080322Abstract: A computer realizes: a management function for managing first management information and second management information as information for managing game media having assigned thereto medium identifiers that are common for each same kind, the first management information indicating the medium identifiers and the number of game media possessed by a player, and the second management information indicating the medium identifiers and usage periods of game media having the usage periods set therefor; a determination function for determining game media available to the player based on the first management information and the second management information; and a set creation function for creating a medium set that includes a plurality of game media and that can include a plurality of game media of the same kind, based on an operation performed by the player to select from the game media available to the player, determined by the determination function.Type: ApplicationFiled: November 22, 2021Publication date: March 17, 2022Applicant: CYGAMES. INC.Inventors: Takatoshi Nakamura, Takashi Fujita, Takafumi Goto
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Patent number: 10965145Abstract: A charge control device for controlling charging of a secondary battery by using a current limit function of an external power supply includes: a charge control element arranged to be connected in series between the external power supply and the secondary battery; a constant current control unit configured to control an output current of the charge control element to be constant; a constant voltage control unit configured to control an output voltage of the charge control element to be constant; and an ON state setting unit configured to set the charge control element to an ON state, wherein the charge control element includes a control terminal to which a control signal for controlling the output current and the output voltage is input, and is composed of a single output element.Type: GrantFiled: December 7, 2018Date of Patent: March 30, 2021Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Daisuke Suzuki, Takafumi Goto, Kensuke Kuroda
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Patent number: 10393188Abstract: A cam-type damper 118 includes a drive cam 131 provided on a clutch shaft 114 without capability of relative rotation and a driven cam 132 provided on a main shaft 103 without capability of relative rotation. The clutch shaft 114 contains a shaft end of the main shaft 103 and the main shaft 103 is rotatably supported on the inner circumferential surface of the clutch shaft 114. The driven cam 132 provided on the main shaft 103 is disposed between a front end surface 114g of the clutch shaft 114 and a rear end surface 103h of a main shaft gear 103d provided on the main shaft 103 and the movement of the driven cam 132 in the axial direction is restricted.Type: GrantFiled: March 2, 2017Date of Patent: August 27, 2019Assignee: HONDA MOTOR CO., LTD.Inventors: Yasushi Fujimoto, Taku Hirayama, Hiroyuki Makita, Takafumi Goto
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Publication number: 20190252905Abstract: A charge control device for controlling charging of a secondary battery by using a current limit function of an external power supply includes: a charge control element arranged to be connected in series between the external power supply and the secondary battery; a constant current control unit configured to control an output current of the charge control element to be constant; a constant voltage control unit configured to control an output voltage of the charge control element to be constant; and an ON state setting unit configured to set the charge control element to an ON state, wherein the charge control element includes a control terminal to which a control signal for controlling the output current and the output voltage is input, and is composed of a single output element.Type: ApplicationFiled: December 7, 2018Publication date: August 15, 2019Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Daisuke SUZUKI, Takafumi GOTO, Kensuke KURODA
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Patent number: 8410821Abstract: An output current detecting circuit includes: a current detecting transistor having a size smaller than that of an output transistor and a control terminal, to which a voltage same as a control voltage of the output transistor is applied; a sensing resistor connected to the current detecting transistor in a serial mode; a comparison circuit comparing a voltage converted by the sensing resistor and a reference voltage to judge a magnitude of a current flowing through the output transistor; and a reference voltage generating circuit, wherein the reference voltage generating circuit includes a constant current circuit flowing a constant current and a resistance element having one terminal connected to a power source voltage terminal, the reference voltage generating circuit generating the reference voltage based on a power source voltage by the conversion of the constant current into a voltage by flowing the constant current through the resistance element.Type: GrantFiled: November 9, 2010Date of Patent: April 2, 2013Assignee: Mitsumi Electric Co., Ltd.Inventors: Tomomitsu Ohara, Takafumi Goto
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Patent number: 8314650Abstract: Disclosed is a reference voltage generating circuit including a constant current circuit which comprises: a first resistive element and a bipolar transistor connected in series between a supply voltage terminal and a constant potential point; a first MOS transistor having a gate connected to a node connecting the first resistive element with the bipolar transistor; a second resistive element connected in series between a source of the first MOS transistor and the constant potential point; a second MOS transistor connected between a drain of the first MOS transistor and the supply voltage terminal; and a third MOS transistor forming a current mirror in conjunction with the second MOS transistor, wherein a constant current generated by the constant current circuit or a current proportional to the generated constant current is converted to a voltage as a reference voltage.Type: GrantFiled: November 10, 2010Date of Patent: November 20, 2012Assignee: Mitsumi Electric Co., Ltd.Inventors: Takafumi Goto, Tomomitsu Ohara
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Publication number: 20120099031Abstract: A projector includes a plurality of reflective liquid crystal panels (for example, a red liquid crystal panel, a green liquid crystal panel, and a blue liquid crystal panel). The film thickness of an ITO film that forms a common electrode of the blue liquid crystal panel is smaller than the film thickness of an ITO film that forms a common electrode of any one of the red liquid crystal panel and the green liquid crystal panel. The film thicknesses of the ITO films that form the common electrodes of the red liquid crystal panel and the green liquid crystal panel are the same.Type: ApplicationFiled: September 22, 2011Publication date: April 26, 2012Applicant: Seiko Epson CorporationInventors: Yusuke Kinoe, Takafumi Goto
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Publication number: 20110115528Abstract: Disclosed is a reference voltage generating circuit including a constant current circuit which comprises: a first resistive element and a bipolar transistor connected in series between a supply voltage terminal and a constant potential point; a first MOS transistor having a gate connected to a node connecting the first resistive element with the bipolar transistor; a second resistive element connected in series between a source of the first MOS transistor and the constant potential point; a second MOS transistor connected between a drain of the first MOS transistor and the supply voltage terminal; and a third MOS transistor forming a current mirror in conjunction with the second MOS transistor, wherein a constant current generated by the constant current circuit or a current proportional to the generated constant current is converted to a voltage as a reference voltage.Type: ApplicationFiled: November 10, 2010Publication date: May 19, 2011Applicant: Mitsumi Electric Co., Ltd.Inventors: Takafumi GOTO, Tomomitsu OHARA
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Publication number: 20110115530Abstract: An output current detecting circuit includes: a current detecting transistor having a size smaller than that of an output transistor and a control terminal, to which a voltage same as a control voltage of the output transistor is applied; a sensing resistor connected to the current detecting transistor in a serial mode; a comparison circuit comparing a voltage converted by the sensing resistor and a reference voltage to judge a magnitude of a current flowing through the output transistor; and a reference voltage generating circuit, wherein the reference voltage generating circuit includes a constant current circuit flowing a constant current and a resistance element having one terminal connected to a power source voltage terminal, the reference voltage generating circuit generating the reference voltage based on a power source voltage by the conversion of the constant current into a voltage by flowing the constant current through the resistance element.Type: ApplicationFiled: November 9, 2010Publication date: May 19, 2011Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Tomomitsu OHARA, Takafumi Goto
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Patent number: 7635975Abstract: Magnetic field detection elements and detect a magnetic material member formed at a rotary disc. An A pulse generation portion and a B pulse generation portion generate an A pulse a and a B pulse b which phases differ by 90 degrees to each other. The B pulse generation portion is supplied with the power from a backup power supply for a predetermined time period necessary for detecting the level of the B pulse from a time point of the edge of the A pulse.Type: GrantFiled: May 11, 2005Date of Patent: December 22, 2009Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Koji Uemura, Shirou Yoshidomi, Takafumi Goto
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Publication number: 20080272834Abstract: To reduce the consumption current of the backup power supply of an absolute multi-revolution encoder thereby to elongate the life time of the backup power supply. Magnetic field detection elements (310) and (320) detect a magnetic material member (11) formed at a rotary disc (1). An A pulse generation portion (31) and a B pulse generation portion (32) generate an A pulse a and a B pulse b which phases differ by 90 degrees to each other. The B pulse generation portion (32) is supplied with the power from a backup power supply for a predetermined time period necessary for detecting the level of the B pulse from a time point of the edge of the A pulse.Type: ApplicationFiled: May 11, 2005Publication date: November 6, 2008Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Koji Uemura, Shirou Yoshidomi, Takafumi Goto
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Patent number: 7097306Abstract: A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation sheet provided between the liquid crystal panel and the polarizing plate, for compensating a twist angle of polarized light. The optical compensation sheet is attached to a rotational adjusting mechanism provided on the chassis so that it can be rotatively adjusted within a plane perpendicular to an optical axis L.Type: GrantFiled: December 23, 2003Date of Patent: August 29, 2006Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshihiro Furuta, Mitsuhiro Nishiguchi, Takafumi Goto
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Publication number: 20050134802Abstract: A projection device includes on a chassis a liquid crystal panel for irradiation with light from a light source, a polarizing plate opposing the liquid crystal panel, and an optical compensation sheet provided between the liquid crystal panel and the polarizing plate, for compensating a twist angle of polarized light. The optical compensation sheet is attached to a rotational adjusting mechanism provided on the chassis so that it can be rotatively adjusted within a plane perpendicular to an optical axis L.Type: ApplicationFiled: December 23, 2003Publication date: June 23, 2005Applicant: SANYO ELECTRIC CO., LTD.Inventors: Yoshihiro Furuta, Mitsuhiro Nishiguchi, Takafumi Goto