Patents by Inventor Hiroki Kuramoto
Hiroki Kuramoto 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: 9874987Abstract: Provided are a double-sided transparent conductive film which has blocking resistance and a low reflectance, and is inhibited from scattering reflected light to exhibit good visibility; a roll thereof; and a touch panel.Type: GrantFiled: January 29, 2015Date of Patent: January 23, 2018Assignee: NITTO DENKO CORPORATIONInventors: Naoki Hashimoto, Katsunori Takada, Kazuhiro Ikai, Shinya Hiraoka, Hiroki Kuramoto, Naoki Tsuno, Toru Umemoto, Hiroyuki Takao
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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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Publication number: 20180011233Abstract: There is provided a polarizer excellent in durability. A polarizer according to one embodiment of the present invention includes a resin film containing boric acid, wherein the resin film has a low-concentration portion, which contains a lower concentration of the boric acid than that in any other site, formed in an end portion thereof.Type: ApplicationFiled: March 10, 2016Publication date: January 11, 2018Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kota Nakai, Naotaka Higuchi, Keisuke Kimura, Yoshitsugu Kitamura, Hiroki Kuramoto
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Patent number: 9851473Abstract: There is provided an anti-reflection film that has an excellent reflection characteristic (low reflectivity) in a wide spectrum and has an excellent reflection hue that is close to neutral, and a method by which such anti-reflection film can be produced with high productivity and at a low cost. An anti-reflection film according to the present invention includes: a substrate; and a medium-refractive index layer, a high-refractive index layer, and a low-refractive index layer in the stated order from a substrate side. A refractive index nS of the substrate, a refractive index nM of the medium-refractive index layer, and a refractive index nH of the high-refractive index layer satisfy the following expression (1): n H - 1 n H + 1 - 1 - 4 ? n M 2 ? n S n M 2 ? ( 1 + n S ) 2 - ( 1 - n M 2 ) ? ( n M 2 - n S 2 ) ? 0.Type: GrantFiled: January 27, 2014Date of Patent: December 26, 2017Assignee: NITTO DENKO CORPORATIONInventors: Atsushi Kishi, Tomonori Ueno, 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: 20170123125Abstract: There is provided a polarizer excellent in heat resistance. A polarizer according to an embodiment of the present invention includes a resin film containing iodine, wherein an end portion of the resin film has formed therein a high-concentration portion having a concentration of a substance that forms a counter ion of iodine higher than that of another portion.Type: ApplicationFiled: October 31, 2016Publication date: May 4, 2017Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Daisuke Ogomi, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Hiroki Kuramoto, Youichirou Sugino, Keisuke Kimura
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Publication number: 20170123123Abstract: There is provided a polarizing plate excellent in durability A method of producing a polarizing plate according to an embodiment of the present invention includes: preparing a polarizing film laminate including a polarizer and a protective film arranged on at least one side of the polarizer; and shrinking the polarizing film laminate.Type: ApplicationFiled: October 24, 2016Publication date: May 4, 2017Applicant: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Shinobu Nagano, Eiko Suefusa, Yoshitsugu Kitamura, Keisuke Kimura, Hiroki Kuramoto, Youichirou Sugino
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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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Patent number: 9607733Abstract: A double-sided transparent conductive film including a base material film, having an anti-blocking layer, an optical adjusting layer and a transparent conductive layer formed in this order on each of both sides of the base material film, wherein an anti-blocking layer containing particles is formed at least one of: a location between the base material film and one optical adjusting layer; and a location between the base material film and the other optical adjusting layer, the anti-blocking layer has a flat portion and protrusion portions caused by the particles, and a value obtained by subtracting a thickness of the flat portion of the anti-blocking layer from a mode diameter of the particles is larger than a thickness of the optical adjusting layer.Type: GrantFiled: May 20, 2014Date of Patent: March 28, 2017Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Naoki Hashimoto, Shinya Hiraoka, Kazuhiro Ikai, Hiroki Kuramoto, Hiroyuki Takao, Naoki Tsuno, Toru Umemoto
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Patent number: 9609745Abstract: A transparent conductive film includes a film base, a cured resin layer formed at one side of the film base, and an indium composite oxide layer laminated at a side of the cured resin layer opposite to the film base. The indium composite oxide layer has a thickness of 20 nm to 50 nm. The cured resin layer has a plurality of spherical particles and a binder resin layer which fixes the plurality of spherical particles to the film base. A difference w?d between a mode particle size w and a thickness d of the binder resin layer is greater than zero and less than or equal to 1.2 ?m, where w is a mode particle size of the spherical particles and d is a thickness of the binder resin layer.Type: GrantFiled: December 10, 2012Date of Patent: March 28, 2017Assignee: NITTO DENKO CORPORATIONInventors: Katsunori Takada, Kazuhiro Ikai, Hiroki Kuramoto, Hiroyuki Takao, Naoki Tsuno
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Publication number: 20170010709Abstract: Provided are a double-sided transparent conductive film which has blocking resistance and a low reflectance, and is inhibited from scattering reflected light to exhibit good visibility; a roll thereof; and a touch panel.Type: ApplicationFiled: January 29, 2015Publication date: January 12, 2017Applicant: NITTO DENKO CORPORATIONInventors: Naoki HASHIMOTO, Katsunori TAKADA, Kazuhiro IKAI, Shinya HIRAOKA, Hiroki KURAMOTO, Naoki TSUNO, Toru UMEMOTO, Hiroyuki TAKAO
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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: 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: 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: 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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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: 20160115340Abstract: Provide are a hard coat film which can exhibit high anti-blocking properties and high scratch resistance and simultaneously achieve high light transmittance (lower haze), and a wound body thereof. The present invention relates to a hard coat film including: a transparent polymer base material; and a hard coat layer formed on one main surface of the transparent polymer base material, wherein: the hard coat layer includes fine particles and a composite resin containing an organic component and an inorganic component; the hard coat layer has a surface having a flat portion and protrusion portions formed by the fine particles; and haze Hparticle caused by the protrusion portions of the hard coat layer is 0.5% or less.Type: ApplicationFiled: May 19, 2014Publication date: April 28, 2016Applicant: NITTO DENKO CORPORATIONInventors: Naoki Hashimoto, Katsunori Takada, Shinya Hiraoka, Hiroki Kuramoto
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Patent number: 9244205Abstract: A hard-coated antiglare film that has superior antiglare properties, allow high definition to be provided even in the case of a low haze value, can prevent white blur in an oblique direction from occurring and, and can improve the depth of black in black display, as well as a polarizing plate, and the like. The hard-coated antiglare film includes a transparent plastic film substrate and a hard-coating antiglare layer containing fine particles, which is on at least one surface of the transparent plastic film substrate. The hard-coated antiglare film has a total haze value Ht in the range of 10% to 35%. The total haze value Ht and an internal haze value Hin satisfy a relationship of 0.5?Hin/Ht?0.9. The surface of the hard-coating antiglare layer has an uneven shape and an arithmetic average surface roughness Ra in the range of 0.1 to 0.3 ?m.Type: GrantFiled: October 7, 2010Date of Patent: January 26, 2016Assignee: NITTO DENKO CORPORATIONInventors: Naoki Tsuno, Daisuke Hamamoto, Hiroki Kuramoto
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Publication number: 20150369965Abstract: An anti-reflection film according to the present invention includes: a substrate; and a medium-refractive index layer, a high-refractive index layer, and a low-refractive index layer in the stated order from a substrate side, wherein: the substrate has a refractive index ranging from 1.45 to 1.65; the medium-refractive index layer is formed by applying, onto the substrate, a composition for forming a medium-refractive index layer containing a binder resin and inorganic fine particles, and curing the composition, has a refractive index ranging from 1.67 to 1.78, and has a thickness of from 70 nm to 120 nm; the high-refractive index layer has a refractive index ranging from 2.00 to 2.60, and has a thickness of from 10 nm to 25 nm; and the low-refractive index layer has a refractive index ranging from 1.35 to 1.55, and has a thickness of from 70 nm to 120 nm.Type: ApplicationFiled: January 27, 2014Publication date: December 24, 2015Applicant: NITTO DENKO CORPORATIONInventors: Atsushi Kishi, Tomonori Ueno, Hiroki Kuramoto