Patents by Inventor Tadayuki Kameyama
Tadayuki Kameyama 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: 20200198302Abstract: Provided is a transparent sheet that is prevented from curling, is excellent in external appearance, prevents the progress of a crack, and the rupture, of its glass, and is excellent in flexibility. A transparent sheet of the present invention includes: an inorganic glass; and a resin film bonded onto one side, or each of both sides, of the inorganic glass through an adhesion layer, in which: the inorganic glass has a thickness of from 35 ?m to 100 ?m; the adhesion layer has a single-layer thickness of more than 10 ?m and (the thickness of the inorganic glass×0.3) ?m or less; the adhesion layer has a modulus of elasticity at 25° C. of from 1.2 GPa to 10 GPa; and a ratio of a total thickness of the resin film to the thickness of the inorganic glass is from 0.9 to 4.Type: ApplicationFiled: March 2, 2020Publication date: June 25, 2020Applicant: NITTO DENKO CORPORATIONInventors: Takeshi Murashige, Daisuke Hattori, Tadayuki Kameyama
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Patent number: 10598829Abstract: The present invention relates to a water-resistant organic thin film obtained by crosslinking, with organic nitrogen compounds, an organic thin film comprising an organic dye having an anionic group, wherein the organic nitrogen compounds are first, second, and third acyclic organic nitrogen compounds each having two or more nitrogen atoms per molecule, wherein the nitrogen atoms of each of the first, second, and third organic nitrogen compounds are each in a cationic group, and the relation A?0.4 nm<B<C is satisfied, wherein A represents a distance (nm) between adjacent nitrogen atoms in the first organic nitrogen compound, B represents a distance (nm) between adjacent nitrogen atoms in the second organic nitrogen compound, and C represents a distance (nm) between adjacent nitrogen atoms in the third organic nitrogen compound.Type: GrantFiled: June 10, 2013Date of Patent: March 24, 2020Assignee: NITTO DENKO CORPORATIONInventors: Hiroshi Tomohisa, Toru Umemoto, Shoichi Matsuda, Tadayuki Kameyama
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Patent number: 10377312Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side. In one embodiment, the first polarizing plate includes a polarizer, and the direction of the polarizer of the first polarizing plate is set so that the transmittance of light output from the image display apparatus that is transmitted through the first polarizing plate becomes maximum.Type: GrantFiled: January 13, 2016Date of Patent: August 13, 2019Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Patent number: 10228572Abstract: A light control device of the present invention includes a first patterning polarizing plate 21 containing a plurality of polarization regions having different absorption axis directions, a second patterning polarizing plate 22 containing the same polarization regions as those of the first patterning polarizing plate 21, and a retardation plate 3, wherein at least any one of the first and the second patterning polarizing plates 21, 22 is disposed slidably in a plane direction. Such a light control device hardly causes color irregularities and hardly causes a pattern.Type: GrantFiled: January 7, 2015Date of Patent: March 12, 2019Assignee: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Shoichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
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Patent number: 10207645Abstract: A vehicle includes: an image display mirror including a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side; and a second polarizing plate, in which: the image display mirror is arranged so as to b viewable by a driver of the vehicle; the half mirror is configured to be oriented in different directions between when an image is displayed on the image display apparatus and when the image is not displayed thereon; the second polarizing plate is arranged so that light transmitted through the second polarizing plate reaches a first polarizing plate side of the image display mirror when the image is displayed on the image display apparatus; and the vehicle is configured so that the transmitted light of the second polarizing plate reaching the image display mirror is prevented from being transmitted through the first polarizing plate.Type: GrantFiled: February 1, 2016Date of Patent: February 19, 2019Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Patent number: 10023123Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a circularly polarizing plate arranged attachably and removably; a half mirror; and an image display apparatus in the stated order from a viewer side. In one embodiment, attached and removed states of the circularly polarizing plate are switched when an image is displayed on the image display apparatus and when the image is not displayed thereon, and when the image is displayed, the circularly polarizing plate is arranged between the half mirror and a viewer.Type: GrantFiled: January 13, 2016Date of Patent: July 17, 2018Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Patent number: 9868400Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a first polarizing plate; a first liquid crystal cell; a half mirror; and an image display apparatus in the stated order from a viewer side, in which in the first liquid crystal cell, a state in which a polarization direction of incident linearly polarized light is maintained and a state in which the incident linearly polarized light is transformed into circularly polarized light are switched in accordance with a voltage to be supplied.Type: GrantFiled: February 1, 2016Date of Patent: January 16, 2018Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kentarou Takeda, Tadatoshi Nakanishi, Tadayuki Kameyama, Hiroki Kuramoto
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Patent number: 9707897Abstract: An image display mirror for a vehicle includes a first polarizing plate arranged so as to be rotatable in a plane, a half mirror having a reflection axis and configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.Type: GrantFiled: February 1, 2016Date of Patent: July 18, 2017Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Publication number: 20170146713Abstract: It is an object of the invention to provide a method for manufacturing a long laminated polarizing plate having a long polarizing coating formed by coating directly on a long retardation film and to provide such a long laminated polarizing plate. The present invention relates to a method for manufacturing a long laminated polarizing plate comprising a long retardation film having a slow axis in its longitudinal direction and a long polarizing coating placed on the retardation film and having an absorption axis or a transmission axis in an in-plane direction at an angle of 25 to 65° to the slow axis direction of the long retardation film, the method comprising the steps: (A) preparing a long retardation film having a slow axis in its longitudinal direction and having an Nz coefficient of 1.Type: ApplicationFiled: December 1, 2016Publication date: May 25, 2017Applicant: NITTO DENKO CORPORATIONInventors: Shoichi Matsuda, Yoshiaki Asanoi, Tadayuki Kameyama
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Patent number: 9623441Abstract: It is an object of the invention to provide a method for manufacturing a long laminated polarizing plate having a long polarizing coating formed by coating directly on a long retardation film and to provide such a long laminated polarizing plate. The present invention relates to a method for manufacturing a long laminated polarizing plate comprising a long retardation film having a slow axis in its longitudinal direction and a long polarizing coating placed on the retardation film and having an absorption axis or a transmission axis in an in-plane direction at an angle of 25 to 65° to the slow axis direction of the long retardation film.Type: GrantFiled: August 17, 2012Date of Patent: April 18, 2017Assignee: NITTO DENKO CORPORATIONInventors: Shoichi Matsuda, Yoshiaki Asanoi, Tadayuki Kameyama
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Patent number: 9616816Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate that is arranged removably and attachably, a half mirror that has a reflection axis and is configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; and when the first polarizing plate is in an attached state, an absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.Type: GrantFiled: February 1, 2016Date of Patent: April 11, 2017Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Publication number: 20160334633Abstract: A light control device of the present invention includes a first patterning polarizing plate 21 containing a plurality of polarization regions having different absorption axis directions, a second patterning polarizing plate 22 containing the same polarization regions as those of the first patterning polarizing plate 21, and a retardation plate 3, wherein at least any one of the first and the second patterning polarizing plates 21, 22 is disposed slidably in a plane direction. Such a light control device hardly causes color irregularities and hardly causes a pattern.Type: ApplicationFiled: January 7, 2015Publication date: November 17, 2016Applicant: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Shoichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
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Publication number: 20160273267Abstract: Provided is an optical laminated body including a patterning polarizing layer, in which the absorption axis of a polarizing region is less likely to deviate and which is suitable for light control applications. In the optical laminated body 1 including a substrate 2 and a patterning polarizing layer 5 that is provided on the substrate 2 and includes a plurality of polarizing regions 51 and 52 having different absorption axis directions, a substrate having the absolute value of the dimensional change rate after heating to 80° C. for 24 hours being less than 1% is used as the substrate 2.Type: ApplicationFiled: October 14, 2014Publication date: September 22, 2016Applicant: NITTO DENKO CORPORATIONInventors: Yoshiaki Asanoi, Shoichi Matsuda, Hiroyuki Takemoto, Tadayuki Kameyama
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Publication number: 20160221508Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate that is arranged removably and attachably, a half mirror that has a reflection axis and is configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; and when the first polarizing plate is in an attached state, an absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Publication number: 20160221506Abstract: A vehicle includes: an image display mirror including a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side; and a second polarizing plate, in which: the image display mirror is arranged so as to b viewable by a driver of the vehicle; the half mirror is configured to be oriented in different directions between when an image is displayed on the image display apparatus and when the image is not displayed thereon; the second polarizing plate is arranged so that light transmitted through the second polarizing plate reaches a first polarizing plate side of the image display mirror when the image is displayed on the image display apparatus; and the vehicle is configured so that the transmitted light of the second polarizing plate reaching the image display mirror is prevented from being transmitted through the first polarizing plate.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Publication number: 20160221509Abstract: An image display mirror for a vehicle includes a first polarizing plate arranged so as to be rotatable in a plane, a half mirror having a reflection axis and configured to reflect polarized light, and an image display apparatus in the stated order from a viewer side, in which: the first polarizing plate has a polarizer; a rotation of the first polarizing plate changes an angle of an absorption axis of the polarizer relative to a reflection axis of the half mirror when an image is not displayed on the image display apparatus and when the image is displayed thereon; when the image is not displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are perpendicular to each other; and when the image is displayed, the absorption axis of the polarizer and the reflection axis of the half mirror are parallel to each other.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Publication number: 20160221507Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a first polarizing plate; a first liquid crystal cell; a half mirror; and an image display apparatus in the stated order from a viewer side, in which in the first liquid crystal cell, a state in which a polarization direction of incident linearly polarized light is maintained and a state in which the incident linearly polarized light is transformed into circularly polarized light are switched in accordance with a voltage to be supplied.Type: ApplicationFiled: February 1, 2016Publication date: August 4, 2016Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kentarou Takeda, Tadatoshi Nakanishi, Tadayuki Kameyama, Hiroki Kuramoto
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Publication number: 20160200255Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes: a circularly polarizing plate arranged attachably and removably; a half mirror; and an image display apparatus in the stated order from a viewer side. In one embodiment, attached and removed states of the circularly polarizing plate are switched when an image is displayed on the image display apparatus and when the image is not displayed thereon, and when the image is displayed, the circularly polarizing plate is arranged between the half mirror and a viewer.Type: ApplicationFiled: January 13, 2016Publication date: July 14, 2016Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Publication number: 20160200256Abstract: Provided is an image display mirror that includes a half mirror and an image display apparatus, reduces an influence of a reflected image provided by the half mirror, and is excellent in visibility of an image displayed on the image display apparatus. The image display mirror for a vehicle includes a first polarizing plate, a half mirror, and an image display apparatus in the stated order from a viewer side. In one embodiment, the first polarizing plate includes a polarizer, and the direction of the polarizer of the first polarizing plate is set so that the transmittance of light output from the image display apparatus that is transmitted through the first polarizing plate becomes maximum.Type: ApplicationFiled: January 13, 2016Publication date: July 14, 2016Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Tadayuki Kameyama, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto
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Patent number: 9387507Abstract: A method for manufacturing a water resistant optically anisotropic film capable of suppressing the generation of a defect such as a crack or separation is provided. The method for manufacturing the water resistant optically anisotropic of the present invention includes a water resistant treatment step of bringing an optically anisotropic film containing an organic dye having an anionic group into contact with a water resistant treatment liquid containing a multivalent cationic compound and a monovalent cationic compound, and the mass ratio of the multivalent cationic compound and the monovalent cationic compound contained in the water resistant treatment liquid, monovalent cationic compound/multivalent cationic compound, is 0.01 to 2.Type: GrantFiled: December 6, 2012Date of Patent: July 12, 2016Assignee: NITTO DENKO CORPORATIONInventors: Toru Umemoto, Satoshi Hirata, Sadahiro Nakanishi, Shoichi Matsuda, Tadayuki Kameyama