Patents by Inventor Tomotaka Ito
Tomotaka Ito 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: 20240174134Abstract: An electric passenger transport vehicle according an embodiment may include: a vehicle body including a floor, a first seat base, a second seat base provided on a rear side of the first seat base; a first seat including a first seat bottom attached to an upper surface of the first seat base; and a second seat including a second seat bottom attached to an upper surface of the second seat base. The second seat bottom is supported by the vehicle body such that the second seat bottom is movable between a first position in which a bottom surface of the second seat bottom is positioned above an upper surface of the second seat base and faces downward and a second position in which the bottom surface of the second seat bottom is positioned in front or back of the upper surface of the second seat base and faces upward.Type: ApplicationFiled: September 7, 2023Publication date: May 30, 2024Applicant: KAWASAKI MOTORS, LTD.Inventors: Daisuke SAEKI, Kazumasa HISADA, Takuya ITO, Tomotaka NAKAGAWA
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Patent number: 11962048Abstract: A fuel cell system includes a fuel cell stack and a control device that controls operation of the fuel cell system based on a measured voltage value measured by a voltage sensor. When the fuel cell system is started and a value measured by a temperature sensor is equal to or less than a temperature determined in advance, the control device raises the voltage of the fuel cell stack until a voltage condition determined in advance is met, by supplying a cathode with an oxidant gas before current sweep is started. The control device sets a voltage command value and a current command value such that an operation point of the fuel cell stack is on an equal power line of the fuel cell stack when the operation point is caused to transition in at least a part of a transition period.Type: GrantFiled: April 6, 2021Date of Patent: April 16, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryouichi Namba, Masahiro Ito, Manabu Takahashi, Tomotaka Ishikawa
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Patent number: 6471814Abstract: Disclosed is a method of accurately, simply forming a light absorbing layer for improving contrast in a transmission screen including micro glass beads two-dimensionally arranged. A light absorbing layer made from toner is formed on glass beads held in a transparent adhesive layer up to a thickness sufficient to cover the glass beads. The light absorbing layer is irradiated with parallel rays of light in the direction from a transparent substrate, to melt and remove only a portion of the light absorbing layer positioned over a light outgoing portion of each glass bead by the energy of the rays of light converged through the glass bead. By suitably selecting a material of the light absorbing layer, openings can be formed in the light absorbing layer by means of combustion, sublimation or ablation due to the energy of the converged rays of light.Type: GrantFiled: January 28, 2002Date of Patent: October 29, 2002Assignee: Sony CorporationInventors: Tomotaka Ito, Hidetoshi Watanabe
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Patent number: 6464367Abstract: Disclosed is a tandem type surface light source system allowing a uniform luminance over the surface light source. The surface light source system includes a plurality of bar-like light sources disposed in parallel to each other; reflecting members, each of which is disposed to surround a right or left side, an upper side, and a lower side of the corresponding one of the light sources; light guide plates made from a transparent material, each of which is disposed along the left or right side of the corresponding one of the light sources, and is formed into a taper shape in cross-section along the traveling direction of light; and reflecting sheets, each of which is disposed on the back surface of the corresponding one of the light guide plates. In this system, each of at least the second and later ones of the light guide plates is, at its end portion on the light source side, integrated with a light introducing portion made from a transparent material.Type: GrantFiled: February 23, 2001Date of Patent: October 15, 2002Assignee: Sony CorporationInventors: Tomotaka Ito, Tomoya Yano
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Publication number: 20020117255Abstract: Disclosed is a method of accurately, simply forming a light absorbing layer for improving contrast in a transmission screen including micro glass beads two-dimensionally arranged. A light absorbing layer made from toner is formed on glass beads held in a transparent adhesive layer up to a thickness sufficient to cover the glass beads. The light absorbing layer is irradiated with parallel rays of light in the direction from a transparent substrate, to melt and remove only a portion of the light absorbing layer positioned over a light outgoing portion of each glass bead by the energy of the rays of light converged through the glass bead. By suitably selecting a material of the light absorbing layer, openings can be formed in the light absorbing layer by means of combustion, sublimation or ablation due to the energy of the converged rays of light.Type: ApplicationFiled: January 28, 2002Publication date: August 29, 2002Inventors: Tomotaka Ito, Hidetoshi Watanabe
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Patent number: 6342121Abstract: Disclosed is a method of accurately, simply forming a light absorbing layer for improving contrast in a transmission screen including micro glass beads two-dimensionally arranged. A light absorbing layer made from toner is formed on glass beads held in a transparent adhesive layer up to a thickness sufficient to cover the glass beads. The light absorbing layer is irradiated with parallel rays of light in the direction from a transparent substrate, to melt and remove only a portion of the light absorbing layer positioned over a light outgoing portion of each glass bead by the energy of the rays of light converged through the glass bead. By suitably selecting a material of the light absorbing layer, openings can be formed in the light absorbing layer by means of combustion, sublimation or ablation due to the energy of the converged rays of light.Type: GrantFiled: July 10, 2000Date of Patent: January 29, 2002Assignee: Sony CorporationInventors: Tomotaka Ito, Hidetoshi Watanabe
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Publication number: 20010054478Abstract: A sure and efficient manufacturing method of a translucent type screen using micro glass beadsis probided. A carbon toner is scattered onto micro glass beads which are buried and fixed in a UV curable resin layer, and the carbon toner is uniformly filled in the gaps between the micro glass beads by a rotating brush or a press roll or the like. The supply and filling of the carbon toner may be simultaneously performed by an air jet nozzle. Subsequently, an extra fine fiber cloth, sticky tape, sticky roll or the like is continuously brought into contact with the upper surface of the carbon toner to remove the carbon toner at the light emission portion of the micro glass beads.Type: ApplicationFiled: July 16, 2001Publication date: December 27, 2001Inventors: Hidetoshi Watanabe, Tomotaka Ito
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Publication number: 20010017774Abstract: Disclosed is a tandem type surface light source system allowing a uniform luminance over the surface light source. The surface light source system includes a plurality of bar-like light sources disposed in parallel to each other; reflecting members, each of which is disposed to surround a right or left side, an upper side, and a lower side of the corresponding one of the light sources; light guide plates made from a transparent material, each of which is disposed along the left or right side of the corresponding one of the light sources, and is formed into a taper shape in cross-section along the traveling direction of light; and reflecting sheets, each of which is disposed on the back surface of the corresponding one of the light guide plates. In this system, each of at least the second and later ones of the light guide plates is, at its end portion on the light source side, integrated with a light introducing portion made from a transparent material.Type: ApplicationFiled: February 23, 2001Publication date: August 30, 2001Inventors: Tomotaka Ito, Tomoya Yano
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Patent number: 6262840Abstract: A plano lens according to the present invention includes a transparent base member disposed on a light emission side thereof or light incidence side thereof and a minute-transparent-ball disposing layer having at least minute transparent balls two-dimensionally in a single grain layer on the transparent base member so that the minute transparent balls disposed adjacent to each other should be disposed in contact with or close to each other, and a colored layer disposed so as to expose the minute transparent balls to outside on the light incidence side. The minute-transparent-ball disposing layer has an improved light transmission at a light emission side end portion of the minute transparent ball.Type: GrantFiled: May 29, 1997Date of Patent: July 17, 2001Assignee: Sony CorporationInventors: Hidetoshi Watanabe, Hirotsugu Suzuki, Koji Ashizaki, Takeshi Matsui, Tomotaka Ito, Shunichi Hashimoto
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Patent number: 6261402Abstract: A sure and efficient manufacturing method of a translucent type screen using micro glass beadsis probided. A carbon toner is scattered onto micro glass beads which are buried and fixed in a UV curable resin layer, and the carbon toner is uniformly filled in the gaps between the micro glass beads by a rotating brush or a press roll or the like. The supply and filling of the carbon toner may be simultaneously performed by an air jet nozzle. Subsequently, an extra fine fiber cloth, sticky roll or the like is continuously brought into contact with the upper surface of the carbon toner to remove the carbon toner at the light emission portion of the micro glass beads.Type: GrantFiled: October 23, 1998Date of Patent: July 17, 2001Assignee: Sony CorporationInventors: Hidetoshi Watanabe, Tomotaka Ito
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Patent number: 6172814Abstract: A piano lens according to the present invention includes a transparent base member disposed on a light emission side thereof or light incidence side thereof and a minute-transparent-ball disposing layer having at least minute transparent balls two-dimensionally in a single grain layer on the transparent base member so that the minute transparent balls disposed adjacent to each other should be disposed in contact with or close to each other, and a colored layer disposed so as to expose the minute transparent balls to outside on the light incidence side. The minute-transparent-ball disposing layer has an improved light transmission at a light emission side end portion of the minute transparent ball.Type: GrantFiled: August 30, 1999Date of Patent: January 9, 2001Assignee: Sony CorporationInventors: Hidetoshi Watanabe, Hirotsugu Suzuki, Koji Ashizaki, Takeshi Matsui, Tomotaka Ito, Shunichi Hashimoto
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Patent number: 6096159Abstract: Disclosed is a method of accurately, simply forming a light absorbing layer for improving contrast in a transmission screen including micro glass beads two-dimensionally arranged. A light absorbing layer made from toner is formed on glass beads held in a transparent adhesive layer up to a thickness sufficient to cover the glass beads. The light absorbing layer is irradiated with parallel rays of light in the direction from a transparent substrate, to melt and remove only a portion of the light absorbing layer positioned over a light outgoing portion of each glass bead by the energy of the rays of light converged through the glass bead. By suitably selecting a material of the light absorbing layer, openings can be formed in the light absorbing layer by means of combustion, sublimation or ablation due to the energy of the converged rays of light.Type: GrantFiled: September 4, 1998Date of Patent: August 1, 2000Assignee: Sony CorporationInventors: Tomotaka Ito, Hidetoshi Watanabe
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Patent number: 5497065Abstract: An operation command process for selecting and setting operation commands, such as frequency and voltage, for operating an inverter to control an induction motor. Multiple operation commands are individually defined. Then, the multiple operation commands are stored as a group in memory. The defining of the operation commands and storing them as an operation command group is repeated, each group corresponding to different application and load conditions of the induction motor, so that a plurality of operation command groups are stored in memory. One of the groups is selected and read from memory, and then used to operate the inverter to control the induction motor.Type: GrantFiled: April 26, 1994Date of Patent: March 5, 1996Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Tomotaka Ito
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Patent number: 5068777Abstract: A pulse-width modulation-type inverter operable at a variable frequency and amplitude and having the ability to modify carrier frequency on the basis of changes in temperature, output current and output frequency levels. The inverter operates in a high carrier frequency range which reduces the audio noise.Type: GrantFiled: July 30, 1990Date of Patent: November 26, 1991Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Tomotaka Ito
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Patent number: 4716513Abstract: A base drive circuit in a transistor inverter in which a control circuit controls the direction of current flow through an inverter main circuit transistor. Pulses from the control circuit are coupled through a photocoupler to amplifying transistors.Type: GrantFiled: July 28, 1986Date of Patent: December 29, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Tomotaka Ito
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Patent number: 4672285Abstract: An inverter control circuit adapted, in the process to slow down and stop an induction motor, such that supply of the clock for combining voltage patterns is cut off by a control signal from its central processing unit and simultaneously voltage patterns dedicated for stopping which are stored in its storage device in addition to fundamental voltage patterns may be selected, whereby a stationary magnetic field is formed for the induction motor and optimum braking action corresponding to the condition of the load is provided.Type: GrantFiled: January 30, 1986Date of Patent: June 9, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Tomotaka Ito
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Patent number: 4654773Abstract: An inverter control circuit produces pulse width modulated waveform patterns approximating an a.c. power sine wave signal from a sequence of data words stored in ROM wherein the sequence is cycled over an interval corresponding to 7.5.degree. or 15.degree. of the desired sine wave. Respective portions of a 0.degree.-60.degree. segment and a 120.degree.-180.degree. segment of the desired sine wave are generated from corresponding bits of the words during successive 7.5.degree. or 15.degree. intervals. The 60.degree.-120.degree. segment is approximated by a steady state signal. Inversions of the 0.degree.-60.degree., 60.degree.-120.degree. and 120.degree.-180.degree. segments form the corresponding 180.degree.-240.degree., 240.degree.-300.degree. and 300.degree.-360.degree. segments. Selection of the appropriate generated segments during successive 60.degree. intervals produces one or more phases of the desired power signal.Type: GrantFiled: August 29, 1985Date of Patent: March 31, 1987Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Tomotaka Ito, Katsuhiko Chonan