Patents by Inventor Kiyotaka Takematsu
Kiyotaka Takematsu 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: 20240130083Abstract: A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in this space, the enclosed space including: a plurality of condensate flow paths through which a fluid that is the working fluid in a condensing state flows; and vapor flow paths through which a vapor that is the working fluid in a vaporizing state flows, wherein each of projecting parts with which each of the vapor flow paths is provided has a projecting amount varying in an extending direction of the vapor flow paths; a pitch for opening parts that allow the vapor flow paths and the condensate flow paths to communicate varies in the extending direction of the vapor flow paths; or wall parts that separate the flow paths each have a given relationship with a transverse cross section of a given flow path.Type: ApplicationFiled: December 28, 2023Publication date: April 18, 2024Applicant: DAI NIPPON PRINTING CO.,LTD.Inventors: Shinichiro TAKAHASHI, Takayuki OTA, Kazunori ODA, Toshihiko TAKEDA, Kiyotaka TAKEMATSU, Terutoshi MOMOSE, Yoko NAKAMURA
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Patent number: 11903167Abstract: A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in this space, the enclosed space including: a plurality of condensate flow paths through which a fluid that is the working fluid in a condensing state flows; and vapor flow paths through which a vapor that is the working fluid in a vaporizing state flows, wherein each of projecting parts with which each of the vapor flow paths is provided has a projecting amount varying in an extending direction of the vapor flow paths; a pitch for opening parts that allow the vapor flow paths and the condensate flow paths to communicate varies in the extending direction of the vapor flow paths; or wall parts that separate the flow paths each have a given relationship with a transverse cross section of a given flow path.Type: GrantFiled: May 30, 2019Date of Patent: February 13, 2024Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro Takahashi, Takayuki Ota, Kazunori Oda, Toshihiko Takeda, Kiyotaka Takematsu, Terutoshi Momose, Yoko Nakamura
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Publication number: 20230358481Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.Type: ApplicationFiled: July 19, 2023Publication date: November 9, 2023Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro TAKAHASHI, Kenro HIRATA, Takayuki OTA, Taizo HASHIMOTO, Kiyotaka TAKEMATSU
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Patent number: 11747090Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.Type: GrantFiled: December 17, 2021Date of Patent: September 5, 2023Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro Takahashi, Kenro Hirata, Takayuki Ota, Taizo Hashimoto, Kiyotaka Takematsu
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Patent number: 11578927Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.Type: GrantFiled: February 23, 2018Date of Patent: February 14, 2023Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro Takahashi, Kenro Hirata, Takayuki Ota, Taizo Hashimoto, Kiyotaka Takematsu
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Patent number: 11473847Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.Type: GrantFiled: February 23, 2018Date of Patent: October 18, 2022Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro Takahashi, Kenro Hirata, Takayuki Ota, Taizo Hashimoto, Kiyotaka Takematsu
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Publication number: 20220279678Abstract: Included are a plurality of first flow paths, and second flow paths arranged between adjacent ones of the first flow paths; and a layer including grooves constituting the first flow paths and the second flow paths, and a layer laminated on the insides of the grooves, and constituting inner surfaces of the first flow paths and the second flow paths.Type: ApplicationFiled: September 4, 2020Publication date: September 1, 2022Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro TAKAHASHI, Takayuki OTA, Kazunori ODA, Toshihiko TAKEDA, Kiyotaka TAKEMATSU, Terutoshi MOMOSE
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Publication number: 20220120509Abstract: A vapor chamber having an enclosure which a working fluid is sealed in, the enclosure including: a first flow path; and a fluid flow path part that is adjacent to the first flow path.Type: ApplicationFiled: March 11, 2020Publication date: April 21, 2022Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Toshihiko TAKEDA, Kazunori ODA, Takayuki OTA, Kiyotaka TAKEMATSU, Shinichiro TAKAHASHI, Terutoshi MOMOSE, Yohei TSUGANEZAWA, Yoko NAKAMURA
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Publication number: 20220107136Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.Type: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro TAKAHASHI, Kenro HIRATA, Takayuki OTA, Taizo HASHIMOTO, Kiyotaka TAKEMATSU
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Publication number: 20210168969Abstract: A vapor chamber in which an enclosed space is formed, and a working fluid is sealed in this space, the enclosed space including: a plurality of condensate flow paths through which a fluid that is the working fluid in a condensing state flows; and vapor flow paths through which a vapor that is the working fluid in a vaporizing state flows, wherein each of projecting parts with which each of the vapor flow paths is provided has a projecting amount varying in an extending direction of the vapor flow paths; a pitch for opening parts that allow the vapor flow paths and the condensate flow paths to communicate varies in the extending direction of the vapor flow paths; or wall parts that separate the flow paths each have a given relationship with a transverse cross section of a given flow path.Type: ApplicationFiled: May 30, 2019Publication date: June 3, 2021Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro TAKAHASHI, Takayuki OTA, Kazunori ODA, Toshihiko TAKEDA, Kiyotaka TAKEMATSU, Terutoshi MOMOSE, Yoko NAKAMURA
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Publication number: 20200404802Abstract: A liquid flow path portion of a vapor chamber according to the present invention includes a plurality of main flow grooves which each extend in the first direction and through which working fluid in liquid form passes. A convex array which includes a plurality of liquid flow path convex portions arranged in the first direction via a communicating groove, is provided between a pair of the main flow grooves adjacent to each other. Each of the communicating grooves allows communication between the corresponding pair of the main flow grooves. The width of the communicating groove is larger than the width of the main flow groove.Type: ApplicationFiled: September 28, 2018Publication date: December 24, 2020Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro TAKAHASHI, Takayuki OTA, Kiyotaka TAKEMATSU, Kenro HIRATA, Taizo HASHIMOTO, Yoko NAKAMURA, Kazunori ODA, Toshihiko TAKEDA, Terutoshi MOMOSE
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Publication number: 20200025458Abstract: A liquid flow path portion of a vapor chamber according to this invention includes a first main flow groove, a second main flow groove and a third main flow groove. A first convex array including a plurality of first convex portions arranged via a first communicating groove is provided between the first main flow groove and the second main flow groove. A second convex array including a plurality of second convex portions arranged via a second communicating groove is provided between the second main flow groove and the third main flow groove. The main flow groove includes a first intersection at which at least a part of the first communicating groove faces each second convex portion and a second intersection at which at least a part of the second communicating groove faces each first convex portion.Type: ApplicationFiled: February 23, 2018Publication date: January 23, 2020Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Shinichiro TAKAHASHI, Kenro HIRATA, Takayuki OTA, Taizo HASHIMOTO, Kiyotaka TAKEMATSU
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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: 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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Publication number: 20010021446Abstract: This invention provides an anti-reflection film for use in various displays which prevents the reflection of light on the surface and enables necessary visual information to be clearly discerned. The anti-reflection film has a hard coat layer 4, an intermediate refractive index layer 3, a high refractive index layer 2 and a low refractive index layer 1 formed in this sequence on a transparent base film 5, such that the refractive indices of the adjacent layers satisfy the relationship 2.20>refractive index of the high refractive index layer>refractive index of the intermediate refractive index layer>refractive index of the low refractive index layer>1.40.Type: ApplicationFiled: January 5, 2001Publication date: September 13, 2001Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Kiyotaka Takematsu, Hiroomi Katagiri
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Patent number: 6207263Abstract: This invention provides an anti-reflection film for use in various displays which prevents the reflection of light on the surface and enables necessary visual information to be clearly discerned. The anti-reflection film has a hard coat layer 4, an intermediate refractive index layer 3, a high refractive index layer 2 and a low refractive index layer 1 formed in this sequence on a transparent base film 5, such that the refractive indices of the adjacent layers satisfy the relationship 2.20>refractive index of the high refractive index layer>refractive index of the intermediate refractive index layer>refractive index of the low refractive index layer >1.40.Type: GrantFiled: January 15, 1998Date of Patent: March 27, 2001Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kiyotaka Takematsu, 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: 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