Patents by Inventor Hirotaka Koyama
Hirotaka Koyama 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: 20230150366Abstract: A power supply control device includes a high-power battery, a low-power battery, a relay that electrically connects the high-power battery and the low-power battery, a power supply switch, and a controller that controls an on/off state of the relay. When a power supply state is a state in which power is supplied from the high-power battery to the low-power battery with the relay therebetween, if the controller receives a first signal, the controller switches the relay from an on state to an off state, and then inhibits the relay from switching from the off state to the on state.Type: ApplicationFiled: April 27, 2020Publication date: May 18, 2023Inventors: Shinji Nakajima, Toshiyuki Koide, Kenichi Gotou, Hirotaka Koyama
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Publication number: 20220113539Abstract: A windshield display device that allows an occupant to visually recognize an image through a windshield of a vehicle includes a transparent screen arranged on the windshield and a projector configured to project an image light on the transparent screen. The projector is arranged in an end adjacent portion of a passenger compartment of the vehicle adjacent to the end of the windshield in a vehicle width direction, and projects the image light on an area equal to or larger than a predetermined area in the vehicle width direction of the windshield. The transparent screen transmits an outside light from an outside of the vehicle into a passenger compartment, and transmits the image light to an eye box of a first occupant seated in a driver's seat of the vehicle, to an eye box of a second occupant seated in a passenger seat, or to both eye boxes thereof.Type: ApplicationFiled: December 22, 2021Publication date: April 14, 2022Inventor: Hirotaka KOYAMA
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Patent number: 11090631Abstract: The present invention provides a method for hydrophobization of a hydrophilic material, the method including introducing a hydrophobic group into a hydroxyl group (—OH group) on a surface of the hydrophilic material. A method for hydrophobization of a hydrophilic material, the method comprising reacting a hydrophilic material to be hydrophobized with a hydrophobic group-containing silylating agent in presence of an amino acid as a reaction accelerator, to introduce a hydrophobic group-containing silyl group to a surface of the hydrophilic material. A hydrophobized silica gel column filler is produced by using the method. Further, a hydrophobized silica gel column is produced by filling a column with the hydrophobized silica gel column filler.Type: GrantFiled: March 6, 2020Date of Patent: August 17, 2021Assignee: SHIMADZU CORPORATIONInventors: Yukio Oikawa, Shigeyoshi Horiike, Hirotaka Koyama
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Publication number: 20210074247Abstract: A vehicle display control device for a vehicle: controls a display device for displaying information in a display region in front of a driver's seat of a vehicle; identifies an effective range of a traffic regulation indicated by a traffic regulation mark; identifies a remaining amount, which is at least one of a remaining travel distance and a remaining travel time required from a vehicle position of the vehicle to an end point of the effective range; and controls the display device to display remaining amount information indicating the remaining amount, in addition to traffic regulation content information indicating a content of the traffic regulation in the effective range, in the display region when the vehicle enters into the effective range.Type: ApplicationFiled: November 19, 2020Publication date: March 11, 2021Inventor: Hirotaka KOYAMA
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Patent number: 10872586Abstract: A vehicle display control device for a vehicle: controls a display device for displaying information in a display region in front of a driver's seat of a vehicle; identifies an effective range of a traffic regulation indicated by a traffic regulation mark; identifies a remaining amount, which is at least one of a remaining travel distance and a remaining travel time required from a vehicle position of the vehicle to an end point of the effective range; and controls the display device to display remaining amount information indicating the remaining amount, in addition to traffic regulation content information indicating a content of the traffic regulation in the effective range, in the display region when the vehicle enters into the effective range.Type: GrantFiled: August 19, 2019Date of Patent: December 22, 2020Assignee: DENSO CORPORATIONInventor: Hirotaka Koyama
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Publication number: 20200324272Abstract: The present invention provides a method for hydrophobization of a hydrophilic material, the method including introducing a hydrophobic group into a hydroxyl group (—OH group) on a surface of the hydrophilic material. A method for hydrophobization of a hydrophilic material, the method comprising reacting a hydrophilic material to be hydrophobized with a hydrophobic group-containing silylating agent in presence of an amino acid as a reaction accelerator, to introduce a hydrophobic group-containing silyl group to a surface of the hydrophilic material. A hydrophobized silica gel column filler is produced by using the method. Further, a hydrophobized silica gel column is produced by filling a column with the hydrophobized silica gel column filler.Type: ApplicationFiled: March 6, 2020Publication date: October 15, 2020Applicant: SHIMADZU CORPORATIONInventors: Yukio OIKAWA, Shigeyoshi HORIIKE, Hirotaka KOYAMA
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Publication number: 20190371281Abstract: A vehicle display control device for a vehicle: controls a display device for displaying information in a display region in front of a driver's seat of a vehicle; identifies an effective range of a traffic regulation indicated by a traffic regulation mark; identifies a remaining amount, which is at least one of a remaining travel distance and a remaining travel time required from a vehicle position of the vehicle to an end point of the effective range; and controls the display device to display remaining amount information indicating the remaining amount, in addition to traffic regulation content information indicating a content of the traffic regulation in the effective range, in the display region when the vehicle enters into the effective range.Type: ApplicationFiled: August 19, 2019Publication date: December 5, 2019Inventor: Hirotaka KOYAMA
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Patent number: 9904151Abstract: A projector includes: a plurality of image-forming units each including an image forming surface provided with a plurality of micromirrors; a plurality of reflecting units that are provided so as to respectively reflect the plurality of image beams formed by the image-forming units; a beam-combining unit that receives the plurality of image beams via the plurality of reflecting units and emits a combined image beam in which the plurality of image beams are combined such that the propagation directions coincide; and a projection unit that projects the combined image beam emitted from the beam-combining unit. At least two of the image-forming units are arranged such that the image-forming surface of each image-forming means lies in the same plane.Type: GrantFiled: July 29, 2014Date of Patent: February 27, 2018Assignee: NEC DISPLAY SOLUTIONS, LTD.Inventors: Noriko Nagase, Atsushi Kato, Isao Takahashi, Takashi Ishikawa, Hirotaka Koyama
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Publication number: 20170139311Abstract: A projector includes: a plurality of image-forming units each including an image forming surface provided with a plurality of micromirrors; a plurality of reflecting units that are provided so as to respectively reflect the plurality of image beams formed by the image-forming units; a beam-combining unit that receives the plurality of image beams via the plurality of reflecting units and emits a combined image beam in which the plurality of image beams are combined such that the propagation directions coincide; and a projection unit that projects the combined image beam emitted from the beam-combining unit. At least two of the image-forming units are arranged such that the image-forming surface of each image-forming means lies in the same plane.Type: ApplicationFiled: July 29, 2014Publication date: May 18, 2017Applicant: NEC Display Solutions, Ltd.Inventors: Noriko NAGASE, Atsushi KATO, Isao TAKAHASHI, Takashi ISHIKAWA, Hirotaka KOYAMA
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Patent number: 8880263Abstract: A control device is provided for controlling a hybrid vehicle including an engine, a motor generator, and a battery arranged to be charged by and to discharge to the motor generator. The control device includes an abnormality judging section configured to judge whether or not an abnormality is generated in the engine. The control device further includes an assist prohibition section configured to prohibit the motor generator from being used as a power source when the abnormality is generated in the engine.Type: GrantFiled: October 11, 2011Date of Patent: November 4, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Takeo Aizawa, Kakuzou Kaneko, Hirotaka Koyama
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Patent number: 8788132Abstract: A control system for a hybrid vehicle is provided with an abnormality detection unit, a start determination unit, and a start control unit. The abnormality detection unit detects abnormality in at least one of an engine, a first clutch, and an automatic transmission. The start determination unit determines whether or not to allow the engine to be started, and the start control unit controls to start the engine. If an abnormality has been detected by the abnormality detection unit, the start determination unit inhibits the start control unit from starting the engine, and maintains the inhibition even when the abnormality has been eliminated, when the accelerator pedal opening is larger than a predetermined value.Type: GrantFiled: October 6, 2011Date of Patent: July 22, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Takeo Aizawa, Kakuzou Kaneko, Hirotaka Koyama
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Publication number: 20130218391Abstract: A control system for a hybrid vehicle is provided with an abnormality detection unit, a start determination unit, and a start control unit. The abnormality detection unit detects abnormality in at least one of an engine, a first clutch, and an automatic transmission. The start determination unit determines whether or not to allow the engine to be started, and the start control unit controls to start the engine. If an abnormality has been detected by the abnormality detection unit, the start determination unit inhibits the start control unit from starting the engine, and maintains the inhibition even when the abnormality has been eliminated, when the accelerator pedal opening is larger than a predetermined value.Type: ApplicationFiled: October 6, 2011Publication date: August 22, 2013Applicant: NISSAN MOTOR CO., LTD.Inventors: Takeo Aizawa, Kakuzou Kaneko, Hirotaka Koyama
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Publication number: 20130218392Abstract: A control device 60 for controlling a hybrid vehicle 1 including an engine 10, a motor generator 20, and a battery 30 arranged to be charged by and discharge to the motor generator 20, the control device 60 includes an abnormality judging section 410 configured to judge whether or not an abnormality is generated in the engine 10, and an assist prohibition section 420 configured to prohibit the motor generator 20 from being used as a power source when the abnormality is generated in the engine 10.Type: ApplicationFiled: October 11, 2011Publication date: August 22, 2013Inventors: Takeo Aizawa, Kakuzou Kaneko, Hirotaka Koyama