Patents by Inventor Fumihiro Arakawa
Fumihiro Arakawa 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: 11911341Abstract: Provided is a multilayer vessel excellent in gas barrier performance and transparency and its application. The multilayer vessel contains a layer (X) that contains at least one type of polyolefin resin as the major ingredient; and a layer (Y) that contains a polyamide resin (A) as the major ingredient, the polyamide resin (A) being composed of a structural unit derived from diamine, and a structural unit derived from dicarboxylic acid, 70 mol % or more of the structural unit derived from diamine being derived from metaxylylenediamine, meanwhile 30 to 60 mol % of the structural unit derived from dicarboxylic acid being derived from straight chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms, and 70 to 40 mol % being derived from isophthalic acid.Type: GrantFiled: February 15, 2017Date of Patent: February 27, 2024Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota Arakawa, Toshiya Naito, Satoshi Okada, Kenichiro Usuda, Takumi Toida, Haruka Okazaki, Fumihiro Ito
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Patent number: 11333802Abstract: A lens sheet and lens sheet unit include an imaging module and an imaging device which can be made thinner. A first lens sheet has light transmission parts having a unit lens shape, and light absorption parts disposed alternatively with the light transmission parts. A lens sheet unit, on the image sensor side of the first lens sheet, includes a second lens sheet. The second lens sheet has light transmission parts having a unit lens shape, and light absorption parts disposed alternatively with the light transmission parts. When viewed from the optical axis direction, the direction in which the light transmission parts are arranged and the direction in which the light transmission parts are arranged intersect at an angle. An imaging module and a camera are included with the above lens sheet and lens sheet unit.Type: GrantFiled: September 5, 2016Date of Patent: May 17, 2022Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Kazuki Bando, Tianyi Sun, Fumihiro Arakawa, Shuji Kawaguchi
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Publication number: 20180313982Abstract: A lens sheet and lens sheet unit include an imaging module and an imaging device which can be made thinner. A first lens sheet has light transmission parts having a unit lens shape, and light absorption parts disposed alternatively with the light transmission parts. A lens sheet unit, on the image sensor side of the first lens sheet, includes a second lens sheet. The second lens sheet has light transmission parts having a unit lens shape, and light absorption parts disposed alternatively with the light transmission parts. When viewed from the optical axis direction, the direction in which the light transmission parts are arranged and the direction in which the light transmission parts are arranged intersect at an angle. An imaging module and a camera are included with the above lens sheet and lens sheet unit.Type: ApplicationFiled: September 5, 2016Publication date: November 1, 2018Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Kazuki BANDO, Tianyi SUN, Fumihiro ARAKAWA, Shuji KAWAGUCHI
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Patent number: 9671528Abstract: There is provided an optical sheet which can prevent problems when it is superimposed on another member. The optical sheet includes: a sheet-like base layer; a light control layer having unit shaped elements arranged in a direction parallel to a sheet surface of the base layer; and a light diffusing layer disposed between the base layer and the light control layer. The light diffusing layer includes a binder resin portion and particles dispersed in the binder resin portion. The particles in the binder resin portion includes a single particle and an aggregate formed of aggregated single particles.Type: GrantFiled: October 6, 2009Date of Patent: June 6, 2017Assignee: Dai Nippon Printing Co., Ltd.Inventors: Takayuki Shimada, Fumihiro Arakawa, Satoshi Goishihara, Hiroshi Kojima, Runa Nakamura, Akinobu Ushiyama, Satoko Maenishi, Kazuki Tanaka, Akiko Tomita
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Patent number: 9261731Abstract: A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more.Type: GrantFiled: February 14, 2013Date of Patent: February 16, 2016Assignees: KEIO UNIVERSITY, NITTO DENKO CORPORATION, DAI NIPPON PRINTING CO., LTD., NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Patent number: 9261640Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.Type: GrantFiled: February 14, 2013Date of Patent: February 16, 2016Assignees: KEIO UNIVERSITY, DAI NIPPON PRINTING CO., LTD., NITTO DENKO CORPORATION, NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Publication number: 20150301384Abstract: A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90°, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0°-180°, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50° to 80° and the azimuth angle is 135° to 225°, 0° to 45°, and 315° to 360° to integrated intensity Lt of total output light is 0.3 or more.Type: ApplicationFiled: February 14, 2013Publication date: October 22, 2015Applicants: KEIO UNIVERSITY, NITTO DENKO CORPORATION, DAI NIPPON PRINTING CO., LTD., NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Publication number: 20150085470Abstract: There is provided an optical sheet which can prevent problems when it is superimposed on another member. The optical sheet includes: a sheet-like base layer; a light control layer having unit shaped elements arranged in a direction parallel to a sheet surface of the base layer; and a light diffusing layer disposed between the base layer and the light control layer. The light diffusing layer includes a binder resin portion and particles dispersed in the binder resin portion. The particles in the binder resin portion include a single particle and an aggregate formed of aggregated single particles.Type: ApplicationFiled: December 4, 2014Publication date: March 26, 2015Inventors: Takayuki SHIMADA, Fumihiro ARAKAWA, Satoshi GOISHIHARA, Hiroshi KOJIMA, Runa NAKAMURA, Akinobu USHIYAMA, Satoko MAENISHI, Kazuki TANAKA, Akiko TOMITA
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Publication number: 20150029442Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.Type: ApplicationFiled: February 14, 2013Publication date: January 29, 2015Applicants: KEIO UNIVERSITY, DAI NIPPON PRINTING CO., LTD., NITTO DENKO CORPORATION, NITTO JUSHI KOGYO CO., LTD.Inventors: Yasuhiro Koike, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Tsuyoshi Ishikawa, Eizaburo Higuchi
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Publication number: 20140055854Abstract: An optical sheet (40) is used in a display device for switchably displaying a two-dimensional image and a naked-eye visible three-dimensional image. The optical sheet (40) includes: a first layer (51) including a thermoplastic resin; and a second layer (52) laminated to the first layer. The first layer is an optically anisotropic An optical interface (55) for changing the traveling direction of light of one polarization component is formed between the first layer (51) and the second layer (52).Type: ApplicationFiled: May 28, 2013Publication date: February 27, 2014Applicant: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro ARAKAWA, Takashi KURODA, Kohei KOMIZO
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Publication number: 20110280004Abstract: There is provided an optical sheet which can prevent problems when it is superimposed on another member. The optical sheet (10) includes: a sheet-like base layer (32); a light control layer (35) having unit shaped elements (38) arranged in a direction parallel to a sheet surface of the base layer; and a light diffusing layer (40) disposed between the base layer and the light control layer. The light diffusing layer includes a binder resin portion (42) and particles (45) dispersed in the binder resin portion (42). The particles (45) in the binder resin portion (42) includes a single particle (46) and an aggregate (47) formed of aggregated single particles (46).Type: ApplicationFiled: October 6, 2009Publication date: November 17, 2011Applicant: Dai Nippon Printing Co., Ltd.Inventors: Takayuki Shimada, Fumihiro Arakawa, Satoshi Goishihara, Hiroshi Kojima, Runa Nakamura, Akinobu Ushiyama, Satoko Maenishi, Kazuki Tanaka, Akiko Tomita
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Patent number: 7859179Abstract: An electromagnetic wave shielding material 1 comprises a light-shielding electrical conductor layer 11 having, on its observer-side external surface, a blackening layer 12. The electrical conductor layer 11 comprises a mesh portion 2 that has a large number of openings adjoining one another and faces the center portion 5b of the image-luminescent part 5a of a display device 5, and a frame portion 3 that surrounds the mesh portion 2 and faces the outer edge portion 5c of the image-luminescent part 5a of the display device 5. When trimming the screen of a display D with a black-colored light-shielding layer, since the electromagnetic wave shielding material 1 is used, it is not necessary to perform9 an additional printing step or the like, so that the total number of steps and material cost are not increased. Moreover, such electromagnetic wave shielding material does not cause non-uniformity in light-shielding properties compared with a light-shielding layer formed by printing.Type: GrantFiled: August 29, 2005Date of Patent: December 28, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro Arakawa, Kazuhito Fujii, Yukihiro Kyoden
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Patent number: 7754981Abstract: A metal film 21 is laminated directly to or by means of an adhesive 13 to a transparent base sheet 11. A mesh metal film including lines defining apertures is formed by coating the metal film 21 with a mesh resist layer 109a patterned in a mesh, etching the metal film 21 through the mesh resist layer 109a, and removing the mesh resist layer 109a. The front surfaces and side surfaces of the lines of the mesh metal film are coated with a black coating layer 23.Type: GrantFiled: April 19, 2004Date of Patent: July 13, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyouden, Eiji Oishi
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Patent number: 7732038Abstract: An electromagnetic wave shielding filter 10 comprises a transparent substrate 1, and a mesh layer 3 containing an electrically conductive layer 2, formed on the transparent substrate 1 with a transparent adhesive layer 9. A transparent colored resin layer 4 containing a coloring agent is formed on the mesh layer 3, with a transparent barrier layer 5 interposed between the two layers. An anticorrosive layer 6 and a blackening layer 7 are formed on the electrically conductive layer 2 in the mesh layer 3. The transparent colored resin layer 4 also serves as an adhesive layer, and a functional layer 8, such as an optical filter, a protective sheet, or a display front substrate, is further laminated to the transparent colored resin layer 4.Type: GrantFiled: July 8, 2005Date of Patent: June 8, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Nobuo Naito, Fumihiro Arakawa
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Patent number: 7697304Abstract: An electromagnetic wave shielding device 1 comprises a transparent substrate 11, an adhesive layer 13 which is provided as needed, an electromagnetic wave shielding layer 15, and a transparent resin layer 17. The electromagnetic wave shielding layer 15 includes a mesh portion 103 facing a screen portion 100 of an image displaying device, a transparent resin layer anchoring portion 105 surrounding a periphery of the mesh portion 103, and including openings 105a having the same opening ratio as that of the openings 103a of the mesh portion 103, and a frame portion 107 surrounding an outer periphery of the transparent resin layer anchoring portion 105, and not having openings. The transparent resin layer 17 is provided such that it covers the surfaces of the mesh portion 103, and the transparent resin layer anchoring portion 105, and fills the openings 103a, 105a.Type: GrantFiled: July 25, 2005Date of Patent: April 13, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Nobuo Naito, Fumihiro Arakawa, Kazuhito Fuji
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Patent number: 7642469Abstract: An electromagnetic shielding sheet is capable of shielding electromagnetic radiation generated by a display, has a proper transparency and uniformly distributed meshes, prevents the occurrence of white and/or black spot defects and linear defects and glaring, and ensures the satisfactory visibility of images. The electromagnetic shielding sheet has a conductive structure (109) having lines (107) having straight parts of widths (W) in the range of C(1±30%), where C is a predetermined value. The radius (r) of curvature of a side surface (107S) extending between the upper side (107U) and the lower side (107B) of a bank in a section of the lines (107) in a plane perpendicular to the transparent sheet meet a condition expressed by: 1.5t?r?3.0t, where t is the thickness of the conductive structure (109).Type: GrantFiled: August 8, 2003Date of Patent: January 5, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro Arakawa, Yasuhiko Ishii, Daisuke Hashimoto, Yukihiro Kyoden, Eiji Ohishi
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Patent number: 7497598Abstract: A light diffusion film 1 according to the present invention comprises a transparent substrate 11 and a light-diffusing layer 15 provided on the transparent substrate 11, and the light-diffusing layer 15 comprises an ionizing radiation curing resin and an ultraviolet light absorber and has, on its surface, fine irregularities 17 that have a function of diffusing light. The ultraviolet light absorber is one, or two or more compounds selected from benzotriazole ultraviolet light absorbers, salicylate ultraviolet light absorbers, and benzophenone ultraviolet light absorbers. The light-diffusing layer 15 does not contain any filler having a function of diffusing light but has, on its surface, fine irregularities 17 made by DPS (Drum Printing System).Type: GrantFiled: December 28, 2004Date of Patent: March 3, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Tadahiro Masaki, Fumihiro Arakawa
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Patent number: 7495182Abstract: An electromagnetic wave shielding sheet 1 comprises a transparent substrate 11, and line parts 107 that define openings 105, provided on the transparent substrate 11. The line parts 107 have a metal mesh layer 21, and a blackening layer 25A formed on the surface of the metal layer 21, on the side of the transparent substrate 11. Matted layers 31 are formed on the side faces of the line parts 107, and an anticorrosive layer 23A is provided between the blackening layer 25A and the transparent substrate 11.Type: GrantFiled: January 26, 2005Date of Patent: February 24, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
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Patent number: 7491902Abstract: An electromagnetic wave shielding sheet 1 comprises a transparent substrate 11, and a first anticorrosive layer 23A, a first blackening layer 25A, a metal layer 21, and a second anticorrosive layer 23B that are successively formed on the transparent substrate 11 through an adhesive layer 13. A second blackening layer 25B is formed so that it fully covers the side faces of the first anticorrosive layer 23A, the first blackening layer 25A, the metal layer 21, and the second anticorrosive layer 23B, as well as the front face of the second anticorrosive layer 23B. At least either of the first anticorrosive layer 23A and the second anticorrosive layer 23B contains one or more metals selected from nickel, chromium, and silicon, and also zinc and/or tin when it is initially formed, and the zinc and/or tin is removed from the first anticorrosive layer 23A and/or the second anticorrosive layer 23B in an intermediate steps.Type: GrantFiled: January 20, 2005Date of Patent: February 17, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Nobuo Naito, Fumihiro Arakawa, Tadahiro Masaki
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Patent number: RE40655Abstract: A polarization light splitting film having a light receiving side and a light transmitting side. The polarization light splitting film includes an optical rotation selection layer at the light receiving side for reflecting one of right and left circularly polarized components of a light beam that is incident on the light receiving side and for transmitting the other one of the right and left circular polarization components of the light beam, and a quarter-wave layer laminated over the optical rotation selection layer at the light transmitting side.Type: GrantFiled: December 16, 2005Date of Patent: March 10, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Fumihiro Arakawa, Keiji Kashima