Patents by Inventor Mitsuru Tsuchiya
Mitsuru Tsuchiya 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: 6577358Abstract: A lens film including a transparent substrate film and a concave or convex lens layer provided on a side of the substrate film. The lens layer contains a resin composition with conductive fine particles dispersed therein and has a surface resistivity of not more than 1012 &OHgr;/□. Another embodiment is a lens film including a transparent substrate film, a conductive layer provided on a side of the substrate film, and a concave or convex lens layer provided on the conductive layer, the conductive layer having a surface resistivity of not more than 1012 &OHgr;/□. The lens film can be part of a surface light source where the light-receiving side of the lens film is disposed on the light outlet side. The surface light source can be part of a liquid crystal display device.Type: GrantFiled: June 23, 1998Date of Patent: June 10, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro Arakawa, Mitsuru Tsuchiya, Hiroomi Katagiri, Taiji Suga, Tadahiro Masaki
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Patent number: 6562440Abstract: The present invention relates to a hard coat film used for various types of displays, wherein cracking and peeling of the hard coat layer is prevented, hardness reduction of the hard coat film is suppressed and the pencil hardness of the hard coat film is in the range of 4H-8H. The hard coat film includes a buffer layer (2) with a thickness of 3-50 &mgr;m, formed on at least one side of a plastic base film (1), which has a buffer function against deformation of the hard coat layer in response to deformation of the plastic base film (1), and a hard coat layer (3) with a thickness of 3-15 &mgr;m additionally formed over the buffer layer. The hard coat film (9) is designed so that the pencil hardness of the plastic base film (1), the pencil hardness of the buffer layer and the pencil hardness of the hard coat layer increase in that order.Type: GrantFiled: September 29, 2000Date of Patent: May 13, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Mitsuru Tsuchiya, Takahiro Niimi
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Patent number: 6503627Abstract: An antistatic hard coat film for various displays is provided which can prevent electrostatic deposition of foreign materials and at the same time possesses excellent scratch resistance and hardness high enough not to cause a deterioration in transparency upon being rubbed. The antistatic hard coat film 5 comprises: a transparent substrate film 1; a transparent conductive layer 2, having a surface resistivity of preferably not more than 1012 &OHgr;/□, provided on the substrate film 1; and a hard coat 3 provided on the transparent conductive layer 2, the hard coat 3 preferably having such an anisotropic conductivity that the resistivity in the layer surface direction is higher than the resistivity in the layer thickness direction.Type: GrantFiled: September 12, 2000Date of Patent: January 7, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takahiro Niimi, Mitsuru Tsuchiya, Hiroomi Katagiri
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Patent number: 6489015Abstract: A hardcoat film is provided which can improve surface hardness and, at the same time, can prevent the hardcoat film per se from being damaged by stress concentration and is less likely to be scratched. The hardcoat film comprises: a transparent substrate; and a multi-layer hardcoat provided on at least one side of the transparent substrate, the multi-layer hardcoat layer comprising two or more hardcoats, the modulus of elasticity &sgr;m of a hardcoat provided closest to the transparent substrate being higher than the modulus of elasticity &sgr;s of a hardcoat provided as a surface layer.Type: GrantFiled: November 15, 1999Date of Patent: December 3, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Mitsuru Tsuchiya, Amane Koike, Takahiro Niimi
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Patent number: 6476969Abstract: An antireflection film containing a transparent substrate film, a hard coat layer on the substrate film, and first and second refractive index layers on the hard coat layer. The hard coat layer has a refractive index higher than the refractive index of the transparent substrate film; the first refractive index layer has a refractive index higher than the refractive index of the hard coat layer; the second refractive index layer has a refractive index lower than the refractive index of the hard coat layer.Type: GrantFiled: September 12, 2001Date of Patent: November 5, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematsu, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri, Hiroshi Yamada, Toshio Yoshihara
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Publication number: 20020051295Abstract: The present invention provides a transparent functional film comprising a transparent plastic substrate film and a hard coat layer provided thereon, wherein functional ultrafine particles are present in a highly localized form, thereby enabling the functional ultrafine particles to effectively exhibit their function and, at the same time, the hard coat layer to have a good adhesion to the functional ultrafine particle layer; and also an antireflection film and processes for producing the transparent functional film and the antireflection film.Type: ApplicationFiled: September 12, 2001Publication date: May 2, 2002Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematsu, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri, Hiroshi Yamada, Toshio Yoshihara
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Patent number: 6340404Abstract: A antiglare layer 12 having a fine uneven surface is formed directly or through other layer(s) on a transparent substrate film 11, and a layer 13 having a low refractive index, which is lower than the refractive index of the antiglare layer 12, is formed thereon. The refractive index of the antiglare layer 12 is higher than the refractive index of a layer in contact with said antiglare layer 12 on its surface remote from the layer 13 having a low refractive index. An SiOx film may be used as the layer 13 having a low refractive index. The SiOx film per se has excellent gas barrier property and antifouling property as an optical functional membrane and is an optical functional material characterized by having excellent moistureproofness, scratch resistance, adhesion to a substrate, transparency, low refractive index, dye deterioration preventive property, and other properties.Type: GrantFiled: March 24, 2000Date of Patent: January 22, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematus, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri
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Patent number: 6335832Abstract: An antireflection film containing a transparent substrate film, a hard coat layer on the substrate film, and first and second refractive index layers on the hard coat layer. The hard coat layer has a refractive index higher than the refractive index of the transparent substrate film; the first refractive index layer has a refractive index higher than the refractive index of the hard coat layer; the second refractive index layer has a refractive index lower than the refractive index of the hard coat layer.Type: GrantFiled: August 10, 1999Date of Patent: January 1, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematsu, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri, Hiroshi Yamada, Toshio Yoshihara
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Patent number: 6329041Abstract: The present invention relates to a hard coat film used for various types of displays, wherein cracking and peeling of the hard coat layer is prevented, hardness reduction of the hard coat film is suppressed and the pencil hardness of the hard coat film is in the range of 4H-8H. The hard coat film includes a buffer layer (2) with a thickness of 3-50 &mgr;m, formed on at least one side of a plastic base film (1), which has a buffer function against deformation of the hard coat layer in response to deformation of the plastic base film (1), and a hard coat layer (3) with a thickness of 3-15 &mgr;m additionally formed over the buffer layer. The hard coat film (9) is designed so that the pencil hardness of the plastic base film (1), the pencil hardness of the buffer layer and the pencil hardness of the hard coat layer increase in that order.Type: GrantFiled: February 17, 1999Date of Patent: December 11, 2001Assignee: Dai Nippon Printing Co., Ltd.Inventors: Mitsuru Tsuchiya, Takahiro Niimi
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Patent number: 6146753Abstract: An antistatic hard coat film for various displays is provided which can prevent electrostatic deposition of foreign materials and at the same time possesses excellent scratch resistance and hardness high enough not to cause a deterioration in transparency upon being rubbed. The antistatic hard coat film 5 comprises: a transparent substrate film 1; a transparent conductive layer 2, having a surface resistivity of preferably not more than 10.sup.12 .OMEGA./.quadrature., provided on the substrate film 1; and a hard coat 3 provided on the transparent conductive layer 2, the hard coat 3 preferably having such an anisotropic conductivity that the resistivity in the layer surface direction is higher than the resistivity in the layer thickness direction.Type: GrantFiled: May 21, 1998Date of Patent: November 14, 2000Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takahiro Niimi, Mitsuru Tsuchiya, Hiroomi Katagiri
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Patent number: 6064524Abstract: A antiglare layer 12 having a fine uneven surface is formed directly or through other layer(s) on a transparent substrate film 11, and a layer 13 having a low refractive index, which is lower than the refractive index of the antiglare layer 12, is formed thereon. The refractive index of the antiglare layer 12 is higher than the refractive index of a layer in contact with said antiglare layer 12 on its surface remote from the layer 13 having a low refractive index. An SiO.sub.x film may be used as the layer 13 having a low refractive index. The SiO.sub.x film per se has excellent gas barrier property and antifouling property as an optical functional membrane and is an optical functional material characterized by having excellent moistureproofness, scratch resistance, adhesion to a substrate, transparency, low refractive index, dye, deterioration preventive property, and other properties.Type: GrantFiled: March 29, 1999Date of Patent: May 16, 2000Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematus, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri
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Patent number: 6033743Abstract: An antireflection film, containing ultrafine particles, formed of a resin composition having excellent dispersibility of ultrafine particles in a binder resin and capable of preventing whitening, a polarizing plate, and a liquid crystal display device are provided.At least one resin layer is provided on a transparent substrate film directly or through other layer(s), and at least one of the resin layer has a controlled refractive index and is formed of a resin composition containing ultrafine particles. The outermost layer has a lower refractive index than an underlying layer in direct contact therewith. The resin composition contains a carboxyl-containing (meth)acrylate as part or the whole of a binder resin component. A polyfunctional acrylate having in its molecule three or more acryloyl groups may be added to the binder resin component in order to further enhance the properties of the hard coating.Type: GrantFiled: April 7, 1998Date of Patent: March 7, 2000Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hiroko Suzuki, Kiyotaka Takematsu, Mitsuru Tsuchiya, Hiroomi Katagiri
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Patent number: 5976297Abstract: The present invention provides a transparent functional film comprising a transparent plastic substrate film and a hard coat layer provided thereon, wherein functional ultrafine particles are present in a highly localized form, thereby enabling the functional ultrafine particles to effectively exhibit their function and, at the same time, the hard coat layer to have a good adhesion to the functional ultrafine particle layer; and also an antireflection film and processes for producing the transparent functional film and the antireflection film.A functional ultrafine particle layer 2 is formed on a release film 1. Separately, a resin composition for a hard coat layer is coated on a transparent plastic substrate film 3.Type: GrantFiled: July 21, 1997Date of Patent: November 2, 1999Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematsu, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri, Hiroshi Yamada, Toshio Yoshihara
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Patent number: 5925438Abstract: An antireflection film comprising a transparent substrate film, a hard coat layer formed on the transparent substrate film either directly or through other layer, and a low-refractive-index layer formed on the hard coat layer either directly or through other layer, wherein the low-refractive-index layer is a SiO.sub.2 gel layer formed by using a SiO.sub.2 sol prepared by hydrolyzing a silicon alkoxide represented by CH.sub.3 Si(OR).sub.3 wherein R is an alkyl group having 1 to 3 carbon atoms.Type: GrantFiled: June 16, 1997Date of Patent: July 20, 1999Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yurie Ota, Norinaga Nakamura, Mitsuru Tsuchiya
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Patent number: 5916844Abstract: A thermal transfer image-receiving sheet having a dye-receiving layer, which is excellent in reaction rate of a release agent, coating strength of a release layer and releasability from a thermal transfer sheet. The thermal transfer image-receiving sheet comprises a substrate sheet and a dye-receiving layer provided on at least one surface of the substrate sheet, wherein the dye-receiving layer contains a release agent mixture comprising an addition-polymerizable silicone and a hydrogen-modified silicone or wherein the dye-receiving layer has on its surface a release layer comprising an addition-polymerizable silicone and a hydrogen-modified silicone. The present invention relates also to a process for producing the above thermal transfer image-receiving sheets.Type: GrantFiled: August 4, 1998Date of Patent: June 29, 1999Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yoshihiko Tamura, Mitsuru Tsuchiya
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Patent number: 5909314Abstract: A antiglare layer 12 having a fine uneven surface is formed directly or through other layer(s) on a transparent substrate film 11, and a layer 13 having a low refractive index, which is lower than the refractive index of the antiglare layer 12, is formed thereon. The refractive index of the antiglare layer 12 is higher than the refractive index of a layer in contact with said antiglare layer 12 on its surface remote from the layer 13 having a low refractive index. An SiO.sub.x film may be used as the layer 13 having a low refractive index. The SiO.sub.x film per se has excellent gas barrier property and antifouling property as an optical functional membrane and is an optical functional material characterized by having excellent moistureproofness, scratch resistance, adhesion to a substrate, transparency, low refractive index, dye deterioration preventive property, and other properties.Type: GrantFiled: February 13, 1995Date of Patent: June 1, 1999Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematus, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri
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Patent number: 5846674Abstract: An electrode for a rechargeable battery with a nonaqueous electrolyte is provided wherein the active material layer has a sufficient flexibility, the adhesion between the active material coating and the metal foil collector is good, none of peeling, falling, cracking and other unfavorable phenomena occur in the active material coating in the step of assembling a battery and excellent discharge characteristics can be developed. The electrode for a rechargeable battery with a nonaqueous electrolyte comprises a metal foil collector and, formed on at least a part of the metal foil collector, an active material layer comprising an active material and a cured reaction-curing binder as essential components.Type: GrantFiled: June 20, 1997Date of Patent: December 8, 1998Assignees: Furukawa Denchi Kabushiki Kaisha, Dai Nippon Printing Co., Ltd.Inventors: Shigeru Sakai, Toru Mangahara, Kazuo Umeda, Kiyoshi Oguchi, Mitsuru Tsuchiya
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Patent number: 5824760Abstract: A thermal transfer image-receiving sheet having a dye-receiving layer, which is excellent in reaction rate of a release agent, coating strength of a release layer and releasability from a thermal transfer sheet. The thermal transfer image-receiving sheet comprises a substrate sheet and a dye-receiving layer provided on at least one surface of the substrate sheet, wherein the dye-receiving layer contains a release agent mixture comprising an addition-polymerizable silicone and a hydrogen-modified silicone or wherein the dye-receiving layer has on its surface a release layer comprising an addition-polymerizable silicone and a hydrogen-modified silicone. The present invention relates also to a process for producing the above thermal transfer image-receiving sheets.Type: GrantFiled: June 19, 1996Date of Patent: October 20, 1998Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yoshihiko Tamura, Mitsuru Tsuchiya
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Patent number: 5770306Abstract: An antireflection film, containing ultrafine particles, formed of a resin composition having excellent dispersibility of ultrafine particles in a binder resin and capable of preventing whitening, a polarizing plate, and a liquid crystal display device are provided.At least one resin layer is provided on a transparent substrate film directly or through other layer(s), and at least one of the resin layer has a controlled refractive index and is formed of a resin composition containing ultrafine particles. The outermost layer has a lower refractive index than an underlying layer in direct contact therewith. The resin composition contains a carboxyl-containing (meth)acrylate as part or the whole of a binder resin component. A polyfunctional acrylate having in its molecule three or more acryloyl groups may be added to the binder resin component in order to further enhance the properties of the hard coating.Type: GrantFiled: March 6, 1996Date of Patent: June 23, 1998Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hiroko Suzuki, Kiyotaka Takematsu, Mitsuru Tsuchiya, Hiroomi Katagiri
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Patent number: 5747152Abstract: A transparent functional film comprising a transparent plastic substrate film and a hard coat layer provided thereon, wherein functional ultrafine particles are present in a highly localized form, thereby enabling the functional ultrafine particles to effectively exhibit their function and, at the same time, the hard coat layer to have a good adhesion to the functional ultrafine particle layer; and also an antireflection film and processes for producing the transparent functional film and the antireflection film.Type: GrantFiled: December 1, 1994Date of Patent: May 5, 1998Assignee: Dai Nippon Printing Co., Ltd.Inventors: Motohiro Oka, Mitsuru Tsuchiya, Norinaga Nakamura, Kiyotaka Takematsu, Yurie Ota, Hiroko Suzuki, Natsuko Yamashita, Hiroomi Katagiri, Hiroshi Yamada, Toshio Yoshihara