Patents by Inventor Hiroki Kuwahara
Hiroki Kuwahara 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).
-
Publication number: 20240118474Abstract: A phase difference film includes a small change in tint when the film is applied to a display device as a circularly polarizing plate in combination with a polarizer display device being observed from an oblique direction at all azimuthal angles. The film includes optically anisotropic layers X, Y, and Z in this order, in which layer X is an A-plate, and layers Y and Z are formed by fixing a first and second liquid crystal compound, respectively, twist-aligned along a helical axis extending in a thickness direction, one of the first and second liquid crystal compounds are rod-like liquid crystal compounds, the other first and the second liquid crystal compounds are disk-like liquid crystal compounds, and an in-plane slow axis of layer X is parallel to an in-plane slow axis on a surface of layer Y on layer X side.Type: ApplicationFiled: November 16, 2023Publication date: April 11, 2024Applicant: FUJIFILM CorporationInventors: Yuta TAKAHASHI, Yusuke FURUKI, Hiroki KUWAHARA
-
Patent number: 11950480Abstract: There are provided a color correction filter for a white organic electroluminescent light source including a resin and 0.1 part by mass or more of a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm with respect to 100 parts by mass of the resin, and having a moisture content of 0.5% by mass or less, and an organic EL display device having this filter.Type: GrantFiled: September 18, 2020Date of Patent: April 2, 2024Assignee: FUJIFILM CorporationInventors: Yu Naito, Nobutaka Fukagawa, Daisuke Sasaki, Hiroki Kuwahara
-
Patent number: 11926740Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, a film and a filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the filter, and a compound suitable as a light absorbing component of the resin composition and the filter. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure. Q1 is a structural part in which energy levels of a highest occupied molecular orbital and a lowest unoccupied molecular orbital satisfy a specific condition. L1 represents a divalent linking group and n1 represents an integer of 1 to 4.Type: GrantFiled: August 13, 2020Date of Patent: March 12, 2024Assignee: FUJIFILM CorporationInventors: Daisuke Sasaki, Akihiro Hara, Kunihiko Kodama, Nobutaka Fukagawa, Yu Naito, Hiroki Kuwahara
-
Publication number: 20230384496Abstract: An optical member for use in a display device having a specific light emitting unit, which includes a specific light bending part and a light absorbing part having an absorption waveform selected from specific absorption waveforms A to D and having absorption waveform B: a specific absorption waveform in which two wavelengths that give an absorbance of half of an absorption maximum are present in a wavelength range larger than ?BMax (a maximum emission wavelength exhibited by blue emission of the display device) and smaller than ?GMax (a maximum emission wavelength exhibited by green emission of the display device) or C: a specific absorption waveform in which two wavelengths that give an absorbance of half of an absorption maximum are present in a wavelength range larger than ?GMax and smaller than ?RMax (a maximum emission wavelength exhibited by red emission of the display device).Type: ApplicationFiled: August 7, 2023Publication date: November 30, 2023Applicant: FUJIFILM CorporationInventor: Hiroki KUWAHARA
-
Publication number: 20230322565Abstract: An anti-vibration material used in an engine mount is provided to include: a clay mineral; and a solvent, the solvent containing water and a polyhydric alcohol having a molecular weight of 106 or less, wherein the solvent has a polyhydric alcohol content of 35% by mass or more and 55% by mass or less.Type: ApplicationFiled: February 13, 2023Publication date: October 12, 2023Inventors: Keita TAKAESU, Seiji HAYAKAWA, Naoki SOGAWA, Hiroki KUWAHARA
-
Publication number: 20230288610Abstract: A wavelength selective absorption filter contains a resin, a coloring agent, and a compound having at least one polar group of a carboxylic acid ester bond, a carboxylic acid amide bond, a sulfonic acid amide bond, a urethane bond, or a sulfonyl bond and a MW?1,000 where dye includes at least one of dye A having a main absorption wavelength range at a wavelength of 390 to 440 nm and dye D having a main absorption wavelength range at a wavelength of 680 to 780 nm, a 20% value wavelength A with respect to an absorbance maximal value exhibited by a main absorption wavelength is 455 nm or less where dye A is contained, and a 20% value wavelength D with respect to the absorbance maximal value exhibited by the main absorption wavelength is 640 nm or more where dye D is contained, and a display device.Type: ApplicationFiled: May 16, 2023Publication date: September 14, 2023Applicant: FUJIFILM CorporationInventors: Nobutaka FUKAGAWA, Hiroki KUWAHARA
-
Publication number: 20230279244Abstract: Provided are a resin composition containing a squarylium compound and a resin, in which the squarylium compound includes at least one selected from squarylium compounds represented by specific formulae; a coated and dried product or a melt-kneaded product; an optical filter including these components; an image display device and a solid-state imaging element including the optical filter; and a squarylium compound represented by a specific formula and a method for producing the same.Type: ApplicationFiled: May 9, 2023Publication date: September 7, 2023Applicant: FUJIFILM CorporationInventors: Daisuke SASAKI, Hiroki KUWAHARA, Nobutaka FUKAGAWA
-
Patent number: 11733435Abstract: Provided are a polarizing plate protective film including a resin and a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm in an amount of 0.1 parts by mass or more with respect to 100 parts by mass of the resin, in which a film thickness is 1 to 18 ?m, and a moisture content is 0.5% by mass or less, a polarizing plate in which the protective film is used, and a liquid crystal display device in which the polarizing plate is used.Type: GrantFiled: March 18, 2020Date of Patent: August 22, 2023Assignee: FUJIFILM CorporationInventors: Nobutaka Fukagawa, Yu Naito, Hiroki Kuwahara, Daisuke Sasaki, Hidetomo Furuyama, Natsuru Chikushi
-
Publication number: 20230176269Abstract: A laminated film includes a plurality of optically anisotropic layers, excellent in transparency, with few point defects, and exhibits little reflected light where the laminated film is applied to a display device brought into a black display state; and a circularly polarizing plate. The laminated film includes first, second, third, and fourth optically anisotropic layers, in order, in which the first, second, third, and fourth optically anisotropic layers are each formed by fixing an aligned liquid crystal compound, an adhesion layer selected from the group consisting of an adhesive layer, and a pressure sensitive adhesive layer is provided on only one of between the first and second optically anisotropic layers, between the second and third optically anisotropic layers, and between the third and fourth optically anisotropic layers, and the laminated film has a minimum transmittance of 60% or more in a wavelength range of 400 to 700 nm.Type: ApplicationFiled: December 5, 2022Publication date: June 8, 2023Applicant: FUJIFILM CorporationInventors: Ayako MURAMATSU, Jun ISHIYAMA, Keisuke YOSHIMASA, Tomoaki YOKOTA, Hiroki KUWAHARA
-
Publication number: 20230012898Abstract: A display device including a laminate includes a wavelength selective absorption layer containing a resin, a dye including at least one of four specific dyes A to D, and an antifading agent for a dye, and includes a gas barrier layer, and a wavelength conversion material; the laminate includes a wavelength selective absorption layer containing a resin, a dye, and an electron migration-type antifading agent in which the energy level of the highest occupied molecular orbital and the lowest unoccupied molecular orbital satisfy a specific relational expression in relation to the dye, and includes the gas barrier layer; an organic electroluminescent display device includes this laminate. The gas barrier layer contains a crystalline resin, has a layer thickness of 0.1 ?m to 10 ?m, has a layer oxygen permeability of 60 cc/m2·day·atm or less, and is directly arranged on at least one surface of the wavelength selective absorption layer.Type: ApplicationFiled: June 29, 2022Publication date: January 19, 2023Applicant: FUJIFILM CorporationInventors: Nobutaka FUKAGAWA, Hiroki KUWAHARA, Daisuke SASAKI
-
Patent number: 11550088Abstract: Provided are a phase difference film that has a small change in tint in a case where the phase difference film is combined with a polarizer and then applied as a circularly polarizing plate to a display device, and the display device is observed from an oblique direction at all azimuthal angles; as well as a circularly polarizing plate and a display device. The phase difference film includes a first optically anisotropic layer, a second optically anisotropic layer, a third optically anisotropic layer, and a fourth optically anisotropic layer in this order, in which the first optically anisotropic layer is a C-plate, the second optically anisotropic layer is an A-plate, the third optically anisotropic layer is a layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, and the first, second, third, and fourth optically anisotropic layers have a predetermined configuration.Type: GrantFiled: May 25, 2022Date of Patent: January 10, 2023Assignee: FUJIFILM CorporationInventors: Yuta Takahashi, Yusuke Furuki, Toshihiro Konishi, Hiroki Kuwahara
-
Publication number: 20220397712Abstract: Provided are a phase difference film that has a small change in tint in a case where the phase difference film is combined with a polarizer and then applied as a circularly polarizing plate to a display device, and the display device is observed from an oblique direction at all azimuthal angles; as well as a circularly polarizing plate and a display device. The phase difference film includes a first optically anisotropic layer, a second optically anisotropic layer, a third optically anisotropic layer, and a fourth optically anisotropic layer in this order, in which the first optically anisotropic layer is a C-plate, the second optically anisotropic layer is an A-plate, the third optically anisotropic layer is a layer formed by fixing a liquid crystal compound twist-aligned along a helical axis extending in a thickness direction, and the first, second third, and fourth optically anisotropic layers have a predetermined configuration.Type: ApplicationFiled: May 25, 2022Publication date: December 15, 2022Applicant: FUJIFILM CorporationInventors: Yuta TAKAHASHI, Yusuke FURUKI, Toshihiro KONISHI, Hiroki KUWAHARA
-
Publication number: 20220324853Abstract: Provided is a resin composition including a compound represented by Formula (1), and a resin. R1 and R2 in Formula (1) each independently represent an alkyl group or the like, R3 and R6 each independently represent an alkoxy group or the like, R4 represents an alkyl group, an aryl group, an alkoxy group, or an aryloxy group, and R5 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, or an aryloxy group. Provided are a cured substance, an ultraviolet absorbing agent, an ultraviolet cut filter, a lens, a protective material, a compound, and a method of synthesizing a compound.Type: ApplicationFiled: June 16, 2022Publication date: October 13, 2022Applicant: FUJIFILM CorporationInventors: Hidetomo FURUYAMA, Daisuke SASAKI, Yoshihiro JIMBO, Hiroki KUWAHARA
-
Publication number: 20220223825Abstract: There are provided: a laminate including a wavelength selective absorption layer containing a resin, a dye containing at least one of four specific dyes A to D, and an antifading agent for a dye and a gas barrier layer directly arranged on at least one surface of the wavelength selective absorption layer, in which the gas barrier layer contains a crystalline resin, has a layer thickness of 0.1 ?m to 10 ?m, and has a layer oxygen permeability of 60 cc/m2·day·atm or less; and an organic electroluminescent display device.Type: ApplicationFiled: February 22, 2022Publication date: July 14, 2022Applicant: FUJIFILM CorporationInventors: Hiroki KUWAHARA, Nobutaka FUKAGAWA, Daisuke SASAKI
-
Publication number: 20210005673Abstract: There are provided a color correction filter for a white organic electroluminescent light source including a resin and 0.1 part by mass or more of a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm with respect to 100 parts by mass of the resin, and having a moisture content of 0.5% by mass or less, and an organic EL display device having this filter.Type: ApplicationFiled: September 18, 2020Publication date: January 7, 2021Applicant: FUJIFILM CorporationInventors: Yu NAITO, Nobutaka FUKAGAWA, Daisuke SASAKI, Hiroki KUWAHARA
-
Publication number: 20200385558Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, an optical filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the optical filter, and a compound suitable as a light absorbing component of the resin composition. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure, Q1 is a structural part including a metallocene structure, and n1 represents an integer of 1 to 6.Type: ApplicationFiled: August 25, 2020Publication date: December 10, 2020Applicant: FUJIFILM CorporationInventors: Daisuke SASAKI, Hidetomo FURUYAMA, Akihiro HARA, Hiroki KUWAHARA, Yu NAITO, Nobutaka FUKAGAWA
-
Publication number: 20200369890Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, a film and a filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the filter, and a compound suitable as a light absorbing component of the resin composition and the filter. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure. Q1 is a structural part in which energy levels of a highest occupied molecular orbital and a lowest unoccupied molecular orbital satisfy a specific condition. L1 represents a divalent linking group and n1 represents an integer of 1 to 4.Type: ApplicationFiled: August 13, 2020Publication date: November 26, 2020Applicant: FUJIFILM CorporationInventors: Daisuke SASAKI, Akihiro HARA, Kunihiko KODAMA, Nobutaka FUKAGAWA, Yu NAITO, Hiroki KUWAHARA
-
Publication number: 20200217993Abstract: Provided are a polarizing plate protective film including a resin and a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm in an amount of 0.1 parts by mass or more with respect to 100 parts by mass of the resin, in which a film thickness is 1 to 18 ?m, and a moisture content is 0.5% by mass or less, a polarizing plate in which the protective film is used, and a liquid crystal display device in which the polarizing plate is used.Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Applicant: FUJIFILM CorporationInventors: Nobutaka FUKAGAWA, Yu NAITO, Hiroki KUWAHARA, Daisuke SASAKI, Hidetomo FURUYAMA, Natsuru CHIKUSHI
-
Patent number: 10077081Abstract: The vehicle roof structure includes: a closely facing section that abuts or is adjacent to a side outer panel; a negative curved-surface section that is positioned more inwards in the vehicle width direction than the closely facing section of the roof panel, and has a recessed face that is indented downwards; and a mounting surface that is formed in the side outer panel at an inner side in the vehicle width direction to downwards of the vehicle towards, and at which the closely facing section abuts or is adjacent, in which an edge, on a side of the roof panel, of the brazing material that has solidified to join the roof panel and the side outer panel is positioned on the negative curved-surface section.Type: GrantFiled: September 30, 2015Date of Patent: September 18, 2018Assignee: HONDA MOTOR CO., LTD.Inventors: Hiroki Kuwahara, Hiroki Fujiuchi, Takahiro Morita, Akira Goto, Keiji Otsuka, Sumitomo Watanabe, Toru Kumagai
-
Publication number: 20170233014Abstract: The vehicle roof structure includes: a closely facing section that abuts or is adjacent to a side outer panel; a negative curved-surface section that is positioned more inwards in the vehicle width direction than the closely facing section of the roof panel, and has a recessed face that is indented downwards; and a mounting surface that is formed in the side outer panel at an inner side in the vehicle width direction to downwards of the vehicle towards, and at which the closely facing section abuts or is adjacent, in which an edge, on a side of the roof panel, of the brazing material that has solidified to join the roof panel and the side outer panel is positioned on the negative curved-surface section.Type: ApplicationFiled: September 30, 2015Publication date: August 17, 2017Applicant: Honda Motor Co., Ltd.Inventors: Hiroki Kuwahara, Hiroki Fujiuchi, Takahiro Morita, Akira Goto, Keiji Otsuka, Sumitomo Watanabe, Toru Kumagai