Patents by Inventor Junichi Nakaho
Junichi Nakaho 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: 7903314Abstract: In an electrochromic mirror, an insulating film is disposed between a conductive reflective film and an electrolytic solution and the conductive reflective film and the electrolytic solution are electrically insulated from each other except inside of insulating film side small holes. Accordingly, in a portion where the insulating film side small holes are not formed, the conductive reflective film does not come into contact with the electrolytic solution, as the result, a ferrocene ion is not reduction-reacted. Thereby, a current is very effectively suppressed from steadily flowing between the conductive film and the conductive reflective film due to repetition of a redox reaction of ferrocene, resulting in very effectively suppressing a voltage from dropping due to the current.Type: GrantFiled: January 16, 2009Date of Patent: March 8, 2011Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Junichi Nakaho, Masaharu Hattori, Atsushi Yamaguchi
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Patent number: 7800807Abstract: An electrochromic mirror includes an electrochromic film, an electrically conductive reflective film formed at one thickness direction side of the electrochromic film, an electrically conductive film provided at one thickness direction side of the electrochromic film and at a side of the electrically conductive reflective film that is opposite from the electrochromic film, an electrolytic solution containing lithium ions and enclosed between the electrically conductive reflective film and the electrically conductive film, and a reduction reaction compensation unit. In the electrolytic solution, due to applying a voltage such that the electrically conductive film is made positive and electrically conductive reflective film is made negative, the lithium ions move toward the side of the electrochromic film and are provided to a reduction reaction of the electrochromic film. The reduction reaction compensation unit compensates the reduction reaction.Type: GrantFiled: June 23, 2008Date of Patent: September 21, 2010Assignees: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho, National University Corporation Nagoya UniversityInventors: Junichi Nakaho, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
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Patent number: 7692843Abstract: An electrochromic mirror includes an electrically conductive reflective film capable of reflecting light that is incident thereto and having electrical conductivity in which plural fine penetration holes are formed, an electrochromic film that is provided at a side of the electrically conductive reflective film at which the light is incident and reflected, an electrically conductive film that is provided at a side of the electrically conductive reflective film that is opposite from the electrochromic film, and an electrolytic solution that contains lithium ions and is enclosed between the electrically conductive film and the electrically conductive reflective film. The plural penetration holes formed in the electrically conductive reflective film penetrate in a thickness direction thereof, and a ratio between a distance between respective centers of the penetration holes and an inner peripheral diameter dimension of the penetration holes is 7 or more.Type: GrantFiled: June 23, 2008Date of Patent: April 6, 2010Assignees: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho, National University Corporation Nagoya UniversityInventors: Junichi Nakaho, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
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Patent number: 7643201Abstract: An electrochromic mirror includes a transparent electrode film, an electrochromic film formed at one thickness direction side of the transparent electrode film, a light reflective film that reflects light that has transmitted through the transparent electrode film and the electrochromic film, a lithium ion transmissive film provided between the electrochromic film and the light reflective film, an electrically conductive film provided at the one thickness direction side of the transparent electrode film and at a side of the light reflective film opposite from the lithium ion transmissive film, and an electrolytic solution that comprises lithium ions and is enclosed between the light reflective film and the electrically conductive film. The lithium ion transmissive film transmits lithium ions and imposed diffusion of silver from the side of the light reflective film to the side of the electrochromic film.Type: GrantFiled: June 23, 2008Date of Patent: January 5, 2010Assignees: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho, National University Corporation Nagoya UniversityInventors: Junichi Nakaho, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
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Patent number: 7573632Abstract: An electrochromic mirror 10 has a simple construction wherein only two layers of films, namely an electrochromic film 14 and an electrically conductive light reflecting film 16 are formed on a glass substrate 12, and a film thickness and film quality and the like of the electrochromic film 14 and the electrically conductive light reflecting film 16 hardly affects performance. Therefore, this leads to easy manufacturing at low cost. Further, since the electrochromic mirror has such a construction that light introduced from a surface side of the glass substrate 12 is reflected by the electrically conductive light reflecting film 16 formed on a back of this glass substrate 12, occurrence of a double image is prevented.Type: GrantFiled: June 16, 2004Date of Patent: August 11, 2009Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Junichi Nakaho, Masao Ayabe, Masaharu Hattori
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Publication number: 20090185256Abstract: In an electrochromic mirror, an insulating film is disposed between a conductive reflective film and an electrolytic solution and the conductive reflective film and the electrolytic solution are electrically insulated from each other except inside of insulating film side small holes. Accordingly, in a portion where the insulating film side small holes are not formed, the conductive reflective film does not come into contact with the electrolytic solution, as the result, a ferrocene ion is not reduction-reacted. Thereby, a current is very effectively suppressed from steadily flowing between the conductive film and the conductive reflective film due to repetition of a redox reaction of ferrocene, resulting in very effectively suppressing a voltage from dropping due to the current.Type: ApplicationFiled: January 16, 2009Publication date: July 23, 2009Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventors: Junichi NAKAHO, Masaharu HATTORI, Atsushi YAMAGUCHI
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Publication number: 20090002801Abstract: An electrochromic mirror includes a transparent electrode film, an electrochromic film formed at one thickness direction side of the transparent electrode film, a light reflective film that reflects light that has transmitted through the transparent electrode film and the electrochromic film, a lithium ion transmissive film provided between the electrochromic film and the light reflective film, an electrically conductive film provided at the one thickness direction side of the transparent electrode film and at a side of the light reflective film opposite from the lithium ion transmissive film, and an electrolytic solution that comprises lithium ions and is enclosed between the light reflective film and the electrically conductive film. The lithium ion transmissive film transmits lithium ions and imposed diffusion of silver from the side of the light reflective film to the side of the electrochromic film.Type: ApplicationFiled: June 23, 2008Publication date: January 1, 2009Applicants: KABUSHIKI KAISHA TOKAI-RIKA-DENKI SEISAKUSHO, 260, TOYOTA 3-CHOME, National University Corporation Nagoya UniversityInventors: Junichi NAKAHO, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
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Publication number: 20090002799Abstract: An electrochromic mirror includes an electrically conductive reflective film capable of reflecting light that is incident thereto and having electrical conductivity in which plural fine penetration holes are formed, an electrochromic film that is provided at a side of the electrically conductive reflective film at which the light is incident and reflected, an electrically conductive film that is provided at a side of the electrically conductive reflective film that is opposite from the electrochromic film, and an electrolytic solution that contains lithium ions and is enclosed between the electrically conductive film and the electrically conductive reflective film. The plural penetration holes formed in the electrically conductive reflective film penetrate in a thickness direction thereof, and a ratio between a distance between respective centers of the penetration holes and an inner peripheral diameter dimension of the penetration holes is 7 or more.Type: ApplicationFiled: June 23, 2008Publication date: January 1, 2009Applicants: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, National University Corporation Nagoya UniversityInventors: Junichi NAKAHO, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
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Publication number: 20090002800Abstract: An electrochromic mirror includes an electrochromic film, an electrically conductive reflective film formed at one thickness direction side of the electrochromic film, an electrically conductive film provided at one thickness direction side of the electrochromic film and at a side of the electrically conductive reflective film that is opposite from the electrochromic film, an electrolytic solution containing lithium ions and enclosed between the electrically conductive reflective film and the electrically conductive film, and a reduction reaction compensation unit. In the electrolytic solution, due to applying a voltage such that the electrically conductive film is made positive and electrically conductive reflective film is made negative, the lithium ions move toward the side of the electrochromic film and are provided to a reduction reaction of the electrochromic film. The reduction reaction compensation unit compensates the reduction reaction.Type: ApplicationFiled: June 23, 2008Publication date: January 1, 2009Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUBUSHOInventors: Junichi NAKAHO, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
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Patent number: 7327509Abstract: The present invention provides an electrochromic mirror, comprising a transparent substrate; an electrochromic film that develops color reductively having the transparent substrate on or above the surface thereof; a light-reflecting film allowing transmission of hydrogen or lithium atoms formed on the side of the electrochromic film opposite to the transparent substrate; a substrate having an electrically conductive area at least on one surface facing the light-reflecting film; and an electrolyte solution at least containing a hydrogen ion and an oxidizable material containing neutral molecules or negative ions and that is sealed between the light-reflecting film and the conductive area of the substrate; wherein (i) the light-reflecting film has electrical conductivity, or (ii) a transparent electrode film having electrical conductivity is formed between the transparent substrate and the electrochromic film, further comprising a dielectric film having a hydrogen or lithium ion conductivity formed between theType: GrantFiled: April 25, 2005Date of Patent: February 5, 2008Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventor: Junichi Nakaho
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Patent number: 7324260Abstract: The present invention provides a variable reflectance mirror, comprising a color layer that develops color by binding to hydrogen or lithium, a transparent substrate formed on or above one surface of the color layer, a light-reflecting layer which allows transmission of hydrogen or lithium provided on the side of the color layer opposite to the surface thereof on which the transparent substrate is formed, and a supplying device for supplying hydrogen or lithium to the color layer, wherein a transparent intermediate layer which allows transmission of hydrogen or lithium and having a refractive index smaller than that of the color layer is formed between the color layer and the light-reflecting layer.Type: GrantFiled: April 21, 2005Date of Patent: January 29, 2008Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventor: Junichi Nakaho
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Publication number: 20070268551Abstract: An electrochromic mirror 10 has a simple construction wherein only two layers of films, namely an electrochromic film 14 and an electrically conductive light reflecting film 16 are formed on a glass substrate 12, and a film thickness and film quality and the like of the electrochromic film 14 and the electrically conductive light reflecting film 16 hardly affects performance. Therefore, this leads to easy manufacturing at low cost. Further, since the electrochromic mirror has such a construction that light introduced from a surface side of the glass substrate 12 is reflected by the electrically conductive light reflecting film 16 formed on a back of this glass substrate 12, occurrence of a double image is prevented.Type: ApplicationFiled: June 16, 2004Publication date: November 22, 2007Applicant: Kabushiki Kaisha Tokai-Rika-Denki- SeisakushoInventors: Junichi Nakaho, Masao Ayabe, Masaharu Hattori
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Patent number: 7088490Abstract: The present invention provides an electrochromic mirror including: a transparent substrate; a transparent electrode film which is formed on the transparent substrate and has conductivity; an electrochromic film which is formed on the transparent electrode film and can be colored by reduction; a light reflecting film which is formed on the electrochromic film and which hydrogen atoms or lithium atoms can permeate; a support substrate which has a conductive part having conductivity formed on at least one surface thereof; and an electrolytic solution containing at least hydrogen ions or lithium ions, and neutral molecules or negative ions which can be oxidized, wherein the transparent substrate is located close to the support substrate such that the conductive part faces the light reflecting film, and the electrolytic solution is enclosed between the light reflecting film and the conductive part.Type: GrantFiled: June 16, 2004Date of Patent: August 8, 2006Assignee: Kabushiki Kaisha Tokai-Rika-Denki SeisakushoInventors: Junichi Nakaho, Masao Ayabe, Masaharu Hattori
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Patent number: 7048392Abstract: In a reflecting mirror, a hydrogen storing metal or a hydrogen storing alloy is used in an electrically conductive reflecting film. When a predetermined voltage is applied from an electrically conductive reflecting film side to a transparent electrode, hydrogen stored at the electrically conductive reflecting film is released and becomes hydrogen ions, and the hydrogen ions move toward the transparent electrode. When the hydrogen ions reach a reduction coloring film between the transparent electrode and the electrically conductive reflecting film, the hydrogen ions bond with an oxide of tungsten which forms the reduction coloring film, and the reduction coloring film is thereby colored. In accordance with this structure, it is possible to do away with an oxidation coloring film.Type: GrantFiled: September 17, 2003Date of Patent: May 23, 2006Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventor: Junichi Nakaho
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Patent number: 6997570Abstract: In the reflecting mirror of the present invention, the film thickness of a photocatalytic hydrophilic film mainly made of silicon dioxide is set to about 90 nm, and the mass ratio of photocatalyst particles made of titanium dioxide contained in the photocatalytic hydrophilic film is set to about 60%. As a result, the hydrophilicity and the photocatalytic property can be sufficiently assured, and the surface reflectivity of the photocatalytic hydrophilic film can be effectively restrained. Therefore, the occurrence of a double image caused by the surface reflection of the photocatalytic hydrophilic film can be effectively restrained or be prevented.Type: GrantFiled: April 2, 2004Date of Patent: February 14, 2006Assignee: Kabushiki Kaisha Tokai-Rika-Denki SeisakushoInventor: Junichi Nakaho
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Publication number: 20050237595Abstract: The present invention provides an electrochromic mirror, comprising a transparent substrate; an electrochromic film that develops color reductively having the transparent substrate on or above the surface thereof; a light-reflecting film allowing transmission of hydrogen or lithium atoms formed on the side of the electrochromic film opposite to the transparent substrate; a substrate having an electrically conductive area at least on one surface facing the light-reflecting film; and an electrolyte solution at least containing a hydrogen ion and an oxidizable material containing neutral molecules or negative ions and that is sealed between the light-reflecting film and the conductive area of the substrate; wherein (i) the light-reflecting film has electrical conductivity, or (ii) a transparent electrode film having electrical conductivity is formed between the transparent substrate and the electrochromic film, further comprising a dielectric film having a hydrogen or lithium ion conductivity formed between theType: ApplicationFiled: April 25, 2005Publication date: October 27, 2005Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventor: Junichi Nakaho
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Publication number: 20050237591Abstract: The present invention provides a variable reflectance mirror, comprising a color layer that develops color by binding to hydrogen or lithium, a transparent substrate formed on or above one surface of the color layer, a light-reflecting layer which allows transmission of hydrogen or lithium provided on the side of the color layer opposite to the surface thereof on which the transparent substrate is formed, and a supplying device for supplying hydrogen or lithium to the color layer, wherein a transparent intermediate layer which allows transmission of hydrogen or lithium and having a refractive index smaller than that of the color layer is formed between the color layer and the light-reflecting layer.Type: ApplicationFiled: April 21, 2005Publication date: October 27, 2005Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventor: Junichi Nakaho
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Patent number: 6900605Abstract: The present invention provides a mirror device motor control circuit that can reliably stop a mirror at predetermined positions with a simple configuration. In the control circuit of the invention, part of a lock current flowing to the motor flows to a base terminal of a transistor. Thus, as long as a voltage corresponding to the lock current is equal to or greater than a specific value, this voltage is applied to the base terminal of the transistor, whereby between a collector terminal and an emitter terminal becomes conductive, and the current flowing to a gate of a MOSFET is grounded via the collector terminal and the emitter terminal of the transistor. For this reason, when the lock current flows, conduction between a drain terminal and a base terminal of the MOSFET is released and a drive current of the motor is cut off.Type: GrantFiled: August 27, 2003Date of Patent: May 31, 2005Assignee: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventor: Junichi Nakaho
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Publication number: 20050002080Abstract: The present invention provides an electrochromic mirror including: a transparent substrate; a transparent electrode film which is formed on the transparent substrate and has conductivity; an electrochromic film which is formed on the transparent electrode film and can be colored by reduction; a light reflecting film which is formed on the electrochromic film and which hydrogen atoms or lithium atoms can permeate; a support substrate which has a conductive part having conductivity formed on at least one surface thereof; and an electrolytic solution containing at least hydrogen ions or lithium ions, and neutral molecules or negative ions which can be oxidized, wherein the transparent substrate is located close to the support substrate such that the conductive part faces the light reflecting film, and the electrolytic solution is enclosed between the light reflecting film and the conductive part.Type: ApplicationFiled: June 16, 2004Publication date: January 6, 2005Applicant: Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Junichi Nakaho, Masao Ayabe, Masaharu Hattori
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Publication number: 20040196580Abstract: In the reflecting mirror of the present invention, the film thickness of a photocatalytic hydrophilic film mainly made of silicon dioxide is set to about 90 nm, and the mass ratio of photocatalyst particles made of titanium dioxide contained in the photocatalytic hydrophilic film is set to about 60%. As a result, the hydrophilicity and the photocatalytic property can be sufficiently assured, and the surface reflectivity of the photocatalytic hydrophilic film can be effectively restrained. Therefore, the occurrence of a double image caused by the surface reflection of the photocatalytic hydrophilic film can be effectively restrained or be prevented.Type: ApplicationFiled: April 2, 2004Publication date: October 7, 2004Applicant: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHOInventor: Junichi Nakaho