Patents by Inventor Akihiro Ikeyama
Akihiro Ikeyama 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: 11957092Abstract: A packaging bag as an agricultural container has a film which forms a partition separating a housing space which houses agricultural products such as fruits and vegetables from an external space. The packaging bag includes a CA film and a porous film. The CA film contains cellulose acylate having an acyl group substitution degree of 2.00 to 2.97. The porous film is formed such that a plurality of pores having an average pore size of 0.0050 ?m to 5.0 ?m penetrate the film in a thickness direction.Type: GrantFiled: June 25, 2020Date of Patent: April 16, 2024Assignee: FUJIFILM CorporationInventors: Yusuke Fujihara, Akihiro Ikeyama, Shogo Katano
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Publication number: 20210260538Abstract: The present invention provides a method for manufacturing a porous membrane having high water permeability and hydrophilicity, which is not easily affected by a treatment such as washing, the method including: preparing, as a substrate, a membrane having a plurality of pores, which includes a water-insoluble resin such as polysulfone and a water-soluble resin including a monomer unit of polyvinylpyrrolidone or a monomer unit of polyvinyl alcohol; and irradiating the substrate with an electron beam in the presence of an aqueous solvent to crosslink at least a part of the water-soluble resin.Type: ApplicationFiled: May 13, 2021Publication date: August 26, 2021Applicant: FUJIFILM CorporationInventor: Akihiro IKEYAMA
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Publication number: 20200344958Abstract: A packaging bag as an agricultural container has a film which forms a partition separating a housing space which houses agricultural products such as fruits and vegetables from an external space. The packaging bag includes a CA film and a porous film. The CA film contains cellulose acylate having an acyl group substitution degree of 2.00 to 2.97. The porous film is formed such that a plurality of pores having an average pore size of 0.0050 ?m to 5.0 ?m penetrate the film in a thickness direction.Type: ApplicationFiled: June 25, 2020Publication date: November 5, 2020Applicant: FUJIFILM CorporationInventors: Yusuke FUJIHARA, Akihiro IKEYAMA, Shogo KATANO
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Publication number: 20200324523Abstract: The packaging material is formed of a laminated film having a base material containing cellulose acylate and a resin layer. The resin layer is formed on one surface of the base material and contains any one of a mixture of an acrylic resin and a cellulose derivative, a silicone elastomer, or a urethane elastomer. The packaging material is formed of the laminated film having a moisture permeability at 40° C. and a relative humidity of 90% in a range of 60 g/m2·day or more and 700 g/m2·day or less.Type: ApplicationFiled: June 25, 2020Publication date: October 15, 2020Applicant: FUJIFILM CorporationInventors: Akihiro IKEYAMA, Shogo KATANO
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Publication number: 20200170196Abstract: Objects of the present invention are to provide a film for an agricultural greenhouse that can maintain a CO2 concentration necessary for the photosynthesis of plants even when ventilation is not performed and to provide an agricultural greenhouse using the film. The film for an agricultural greenhouse of the present invention is a cellulose film which contains a cellulose acylate resin and has an equilibrium moisture content of 4% to 8% at a temperature of 25° C., a relative humidity of 80% and a thickness of 60 to 200 ?m.Type: ApplicationFiled: February 7, 2020Publication date: June 4, 2020Applicant: FUJIFILM CorporationInventors: Shogo KATANO, Yui OMI, Kimito WASHIYA, Akihiro IKEYAMA, Eiji ISHII
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Patent number: 10595472Abstract: Objects of the present invention are to provide a film for an agricultural greenhouse that can maintain a CO2 concentration necessary for the photosynthesis of plants even when ventilation is not performed and to provide an agricultural greenhouse using the film. The film for an agricultural greenhouse of the present invention is a cellulose film which contains a cellulose acylate resin and has an equilibrium moisture content of 4% to 8% at a temperature of 25° C., a relative humidity of 80% and a thickness of 60 to 200 ?m.Type: GrantFiled: June 20, 2017Date of Patent: March 24, 2020Assignee: FUJIFILM CorporationInventors: Shogo Katano, Yui Omi, Kimito Washiya, Akihiro Ikeyama, Eiji Ishii
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Patent number: 10479872Abstract: An antifogging film includes a film base and a saponified layer. The film base is formed of cellulose triacetate as cellulose acylate. The saponified layer is provided on a first base surface of the film base and serves as a first film surface of the antifogging film. The saponified layer contains saponified cellulose triacetate. The antifogging film is configured such that the first film surface has a contact angle of 20° or less 15 seconds after dropping of pure water thereto. In a case where the amount of acyl groups of the first film surface is X and the amount of acyl groups of a second base surface is Y, an acyl group ratio obtained by X/Y is 0.7 or less.Type: GrantFiled: March 13, 2018Date of Patent: November 19, 2019Assignee: FUJIFILM CorporationInventors: Yui Matsuura, Syougo Katano, Toshiya Mita, Akihiro Ikeyama
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Publication number: 20190135533Abstract: A packaging material for fruits and vegetables contains cellulose acylate having an acyl group. The cellulose acylate is cellulose acylate in which the hydroxy group of cellulose is esterified with a carboxylic acid, and has an acyl group. In the cellulose acylate of the packaging material for fruits and vegetable, an acyl group substitution degree, which is a rate of esterification of the hydroxy group of cellulose with a carboxylic acid, is within a range of from 2.00 to 2.97.Type: ApplicationFiled: December 27, 2018Publication date: May 9, 2019Applicant: FUJIFILM CorporationInventors: Akihiro IKEYAMA, Kimito WASHIYA
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Publication number: 20180201745Abstract: An antifogging film includes a film base and a saponified layer. The film base is formed of cellulose triacetate as cellulose acylate. The saponified layer is provided on a first base surface of the film base and serves as a first film surface of the antifogging film. The saponified layer contains saponified cellulose triacetate. The antifogging film is configured such that the first film surface has a contact angle of 20° or less 15 seconds after dropping of pure water thereto. In a case where the amount of acyl groups of the first film surface is X and the amount of acyl groups of a second base surface is Y, an acyl group ratio obtained by X/Y is 0.7 or less.Type: ApplicationFiled: March 13, 2018Publication date: July 19, 2018Applicant: FUJIFILM CorporationInventors: Yui MATSUURA, Syougo KATANO, Toshiya MITA, Akihiro IKEYAMA
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Publication number: 20170280637Abstract: Objects of the present invention are to provide a film for an agricultural greenhouse that can maintain a CO2 concentration necessary for the photosynthesis of plants even when ventilation is not performed and to provide an agricultural greenhouse using the film. The film for an agricultural greenhouse of the present invention is a cellulose film which contains a cellulose acylate resin and has an equilibrium moisture content of 4% to 8% at a temperature of 25° C., a relative humidity of 80% and a thickness of 60 to 200 ?m.Type: ApplicationFiled: June 20, 2017Publication date: October 5, 2017Applicant: FUJIFILM CorporationInventors: Shogo KATANO, Yui OMI, Kimito WASHIYA, Akihiro IKEYAMA, Eiji ISHII
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Publication number: 20080230944Abstract: A dope is cast onto a drum. A casting film is cooled and solidified by the drum. The casting film is peeled as a film containing a solvent. The peeled film is guided to a tenter. In the tenter, in a first drying step, the film is dried by dry air from an air duct while being stretched in the width direction in a state that side edge portions of the film are held by pins. Thereafter, in a second drying step, the film is dried while tension is applied to the film in the width direction. A first ratio calculated by (a moving speed of the pins)/(a rotation speed of the drum), a second ratio calculated by L2/L1, and a third ratio calculated by L3/L2 satisfy 0.94?(the first ratio)/{(the second ratio)·(the third ratio)}?0.97.Type: ApplicationFiled: March 18, 2008Publication date: September 25, 2008Applicant: FUJIFILM CorporationInventors: Toshinao ARAI, Hiroaki SATA, Takahiro MOTO, Akihiro IKEYAMA
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Publication number: 20080225210Abstract: An optical compensation film including: a support; an alignment film layer including a polymer having a radical polymerizable group; and an optical anisotropic layer including a liquid crystal compound, laminated in this order, wherein a content of a polymerization initiator capable of reacting with the radical polymerizable group and/or a compound capable of reacting with the radical polymerizable group and having two or more vinyl groups is 0.05% by mass to 30.0% by mass with respect to a total solid content of the polymer having a radical polymerizable group contained in the alignment film layer; and the like.Type: ApplicationFiled: March 7, 2008Publication date: September 18, 2008Applicant: FUJIFILM CorporationInventors: Kazuhiro Shimoda, Hirokazu Nishimura, Akihiro Ikeyama, Tsuyoshi Yamamoto
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Patent number: 7212341Abstract: Provided is an antireflection film comprising a transparent support, at least one high refractive index layer having a refractive index higher by 0.05 or greater but not greater than 1.5 than that of the transparent support and a low refractive index layer having a refractive index lower by 0.05 or greater but not greater than 2.0 than that of the high refractive index layer, wherein the high refractive index layer contains matting agent particles having an average particle size of 0.3 ?m or greater but not greater than 20 ?m; and the film has a haze value of 10% or less. This antireflection film has a low reflectance, is clear, has a surface less tinged with white and has reduced color due to interference, so that it is suitably used for image display devices such cathode ray tube display device (CRT), plasma display panel (PDP) and liquid crystal display (LCD). The film is also used for a polarizing plate.Type: GrantFiled: March 18, 2002Date of Patent: May 1, 2007Assignee: Fujifilm CorporationInventor: Akihiro Ikeyama
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Publication number: 20060105155Abstract: An optical film comprises a support having thereon a coat layer formed by directly coating a coating solution containing at least one organic solvent selected from ketones and esters on the support surface, the support comprising a cellulose acylate film containing at least one plasticizer, wherein a surface plasticizer amount in the cellulose acylate film is from 1 to 20 mass % of the cellulose acylate film.Type: ApplicationFiled: November 15, 2005Publication date: May 18, 2006Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Akihiro Ikeyama, Tsutomu Sugou
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Patent number: 6917400Abstract: There is disclosed an anti-reflection film comprising 5-65% by volume of inorganic fine particles having an average particle size of 1-200 nm and having a core/shell structure, and 35-95% by volume of a polymer, wherein a high-refractive-index layer having a refractive index of 1.65-2.40 and a low-refractive-index layer having a refractive index of 1.30-1.55 are laminated. There is also disclosed a polarizing plate and image display device utilizing the anti-reflection film. The anti-reflection film is suitable for mass production.Type: GrantFiled: May 14, 2003Date of Patent: July 12, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Kenichi Nakamura, Ichiro Amimori, Akihiro Ikeyama, Jun Watanabe
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Patent number: 6791649Abstract: There is disclosed an anti-reflection film comprising 5-65% by volume of inorganic fine particles having an average particle size of 1-200 nm and having a core/shell structure, and 35-95% by volume of a polymer, wherein a high-refractive-index layer having a refractive index of 1.65-2.40 and a low-refractive-index layer having a refractive index of 1.30-1.55 are laminated. There is also disclosed a polarizing plate and image display device utilizing the anti-reflection film. The anti-reflection film is suitable for mass production.Type: GrantFiled: September 28, 2000Date of Patent: September 14, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Kenichi Nakamura, Ichiro Amimori, Akihiro Ikeyama, Jun Watanabe
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Publication number: 20040156110Abstract: Provided is an antireflection film comprising a transparent support, at least one high refractive index layer having a refractive index higher by 0.05 or greater but not greater than 1.5 than that of the transparent support and a low refractive index layer having a refractive index lower by 0.05 or greater but not greater than 2.0 than that of the high refractive index layer, wherein the high refractive index layer contains matting agent particles having an average particle size of 0.3 &mgr;m or greater but not greater than 20 &mgr;m; and the film has a haze value of 10% or less. This antireflection film has a low reflectance, is clear, has a surface less tinged with white and has reduced color due to interference, so that it is suitably used for image display devices such cathode ray tube display device (CRT), plasma display panel (PDP) and liquid crystal display (LCD). The film is also used for a polarizing plate.Type: ApplicationFiled: April 8, 2004Publication date: August 12, 2004Inventor: Akihiro Ikeyama
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Publication number: 20030202137Abstract: There is disclosed an anti-reflection film comprising 5-65% by volume of inorganic fine particles having an average particle size of 1-200 nm and having a core/shell structure, and 35-95% by volume of a polymer, wherein a high-refractive-index layer having a refractive index of 1.65-2.40 and a low-refractive-index layer having a refractive index of 1.30-1.55 are laminated. There is also disclosed a polarizing plate and image display device utilizing the anti-reflection film. The anti-reflection film is suitable for mass production.Type: ApplicationFiled: May 14, 2003Publication date: October 30, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Kenichi Nakamura, Ichiro Amimori, Akihiro Ikeyama, Jun Watanabe
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Patent number: 6166855Abstract: An anti-reflection film includes a transparent support and a low refractive index layer. A refractive index of the low refractive index layer is lower than a refractive index of the transparent support. The low refractive index layer contains micro voids in an amount of 3 to 50 volume % of the low refractive index layer. The anti-reflection film further has an overcoating layer provided on the low refractive index layer. The overcoating layer contains a fluorine compound. The fluorine compound is not present in the micro voids, or an amount of the fluorine compound present in the micro voids is less than 70 volume % of the micro voids.Type: GrantFiled: June 7, 1999Date of Patent: December 26, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Akihiro Ikeyama, Ichiro Amimori, Tomokazu Yasuda
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Patent number: 5843631Abstract: A silver halide photographic material is described, which comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer and a magnetic recording layer in backing layers on the side of the support opposite to the side on which the silver halide emulsion layer is provided, wherein the layer on the farthest side from the support of the backing layers contains a binder and a sliding agent, and the weight ratio of the sliding agent/binder is from 1 to 1.times.10.sup.4.Type: GrantFiled: May 20, 1997Date of Patent: December 1, 1998Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiji Mihayashi, Masatoshi Nakanishi, Akihiro Ikeyama, Masayoshi Toyoda