Patents by Inventor Hiroaki Sata
Hiroaki Sata 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: 11667842Abstract: Provided is a laminate, which has a polarizer and an optically anisotropic layer and is excellent in thermal durability, and an organic electroluminescent device and a liquid crystal display device, which include the laminate. The laminate has two substrates and a polarizing plate disposed between the two substrates, in which the polarizing plate has a polarizer and an optically anisotropic layer, the polarizer contains a polyvinyl alcohol-based resin, the optically anisotropic layer is formed of a composition containing a polymerizable liquid crystal compound represented by General Formula (I): L1-G1-D1-Ar-D2-G2-L2, a moisture permeability of the substrate is 10?3 g/m2·day or less, and a water content of the polarizing plate is 3.0 g/m2 or less.Type: GrantFiled: August 26, 2020Date of Patent: June 6, 2023Assignee: FUJIFILM CorporationInventors: Naoya Shibata, Nobuyuki Akutagawa, Keisuke Yoshimasa, Hiroaki Sata
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Publication number: 20200392408Abstract: Provided is a laminate, which has a polarizer and an optically anisotropic layer and is excellent in thermal durability, and an organic electroluminescent device and a liquid crystal display device, which include the laminate. The laminate has two substrates and a polarizing plate disposed between the two substrates, in which the polarizing plate has a polarizer and an optically anisotropic layer, the polarizer contains a polyvinyl alcohol-based resin, the optically anisotropic layer is formed of a composition containing a polymerizable liquid crystal compound represented by General Formula (I): L1-G1-D1-Ar-D2-G2-L2, a moisture permeability of the substrate is 10?3 g/m2·day or less, and a water content of the polarizing plate is 3.0 g/m2 or less.Type: ApplicationFiled: August 26, 2020Publication date: December 17, 2020Applicant: FUJIFILM CorporationInventors: Naoya SHIBATA, Nobuyuki AKUTAGAWA, Keisuke YOSHIMASA, Hiroaki SATA
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Patent number: 10268289Abstract: An object of the present invention is to provide a conductive film including a polarizer in which performance deterioration of the polarizer is suppressed while suppressing cracking of the polarizer due to a change in moisture heat environment; and a display device provided with a touch panel including the conductive film. The conductive film of the present invention includes a polarizer; and a conductive layer which is disposed on the polarizer and includes fullerene functionalized carbon nanotubes.Type: GrantFiled: January 13, 2017Date of Patent: April 23, 2019Assignee: FUJIFILM CorporationInventor: Hiroaki Sata
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Publication number: 20170144408Abstract: An object of the present invention is to provide a conductive film which can he easily produced, has high light transmittance and has excellent flatness, and has a hard coat layer; and a polarizing plate and a display device provided with a touch panel which have a conductive film. The conductive film of the present invention includes a support which has an in-plane retardation Re (550) of 10 nm or less at a wavelength of 550 nm and has a retardation Rth (550) of ?60 to 60 nm at a wavelength of 550 nm in a thickness direction; a conductive layer which is disposed on at least one surface of the support, includes fullerene functionalized carbon nanotubes, and has a thickness of less than 10 ?m; and a hard coat layer which is disposed adjacent to the conductive layer.Type: ApplicationFiled: January 13, 2017Publication date: May 25, 2017Applicant: FUJIFILM CorporationInventor: Hiroaki SATA
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Publication number: 20170131804Abstract: An object of the present invention is to provide a conductive film including a polarizer in which performance deterioration of the polarizer is suppressed while suppressing cracking of the polarizer due to a change in moisture heat environment; and a display device provided with a touch panel including the conductive film. The conductive film of the present invention includes a polarizer; and a conductive layer which is disposed on the polarizer and includes fullerene functionalized carbon nanotubes.Type: ApplicationFiled: January 13, 2017Publication date: May 11, 2017Applicant: FUJIFILM CorporationInventor: Hiroaki SATA
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Patent number: 9162267Abstract: An extrusion die is provided with a male die through which a billet is extruded from an upstream side to a downstream side and, the male die adapted for forming an inside shape of a hollow material; and a female die for holding the male die and forming an outside shape of the hollow material. The male die is formed of a spider and a holder for holding the spider. The spider is formed of a mandrel and a plurality of bridge parts for supporting the mandrel, and enabling a distal-end outer peripheral surface to engage with a bridge-holding surface. The distal-end outer peripheral surface of each of the bridge parts and the bridge-holding surface of the holder are joined by shrink-fitting.Type: GrantFiled: August 2, 2012Date of Patent: October 20, 2015Assignees: Nippon Light Metal Company, Ltd., Nikkeikin Aluminium Core Technology Co., Ltd.Inventors: Haisei Hayashi, Yuji Mochizuki, Shigenori Saito, Kenji Yuza, Hiroaki Sata, Hirohumi Sugihara
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Publication number: 20140283577Abstract: An extrusion die is provided with a male die through which a billet is extruded from an upstream side to a downstream side and, the male die adapted for forming an inside shape of a hollow material; and a female die for holding the male die and forming an outside shape of the hollow material. The male die is formed of a spider and a holder for holding the spider. The spider is formed of a mandrel and a plurality of bridge parts for supporting the mandrel, and enabling a distal-end outer peripheral surface to engage with a bridge-holding surface. The distal-end outer peripheral surface of each of the bridge parts and the bridge-holding surface of the holder are joined by shrink-fitting.Type: ApplicationFiled: August 2, 2012Publication date: September 25, 2014Applicants: Nikkeiken Aluminium Core Technology Company, Ltd., Nippon Light Metal Company, Ltd.Inventors: Haisei Hayashi, Yuji Mochizuki, Shigenori Saito, Kenji Yuza, Hiroaki Sata, Hirofumi Sugihara
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Patent number: 8648982Abstract: There is provided an optical film having a small size change with a temperature change of a support of a pattern retardation film. An optical film includes: a support comprising a polymer having a moisture absorptivity of 0.5% or more; a first retardation region and a second retardation region, in which birefringence thereof is mutually different; and an optically anisotropic layer in which the first retardation region and the second retardation region are alternately patterned for every one line.Type: GrantFiled: February 18, 2011Date of Patent: February 11, 2014Assignee: Fujifilm CorporationInventors: Yujiro Yanai, Hiroaki Sata, Hajime Nakayama, Yasuyuki Sasada
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Publication number: 20120320316Abstract: There is provided an optical film having a small size change with a temperature change of a support of a pattern retardation film. An optical film includes: a support comprising a polymer having a moisture permeability of 0.5% or more; a first retardation region and a second retardation region, in which birefringence thereof is mutually different; and an optically anisotropic layer in which the first retardation region and the second retardation region are alternately patterned for every one line.Type: ApplicationFiled: February 18, 2011Publication date: December 20, 2012Applicant: FUJIFILM CORPORATIONInventors: Yujiro Yanai, Hiroaki Sata, Hajime Nakayama, Yasuyuki Sasada
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Patent number: 8313574Abstract: A cellulose acylate film includes a cellulose acylate; and a polyester diol having a hydroxyl group at each of the both terminals in an amount of 5 mass % or more based on the amount of the cellulose acylate.Type: GrantFiled: September 26, 2008Date of Patent: November 20, 2012Assignee: FUJIFILM CorporationInventors: Akihiro Matsufuji, Takeichi Tatsuta, Hiroaki Sata, Mamoru Sakurazawa, Yasuo Mukunoki, Tatsuya Shimoyama
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Patent number: 8313814Abstract: A method of producing a cellulose derivative film, the method comprising: forming a film with a solvent cast method from a dope including a cellulose derivative satisfying following conditions (a) and (b): (a) at least one among three hydroxyl groups included in a glucose unit of cellulose is substituted by a substituent of which a polarizability anisotropy ?? represented as following Expression (1) is 2.5×10?24 cm3 or higher: Expression (1): ??=?x?(?y+?z)/2, wherein ?x, ?y and ?z is as defined in the specification; and (b) when a substitution degree by a substituent of which ?? is 2.5×10?24 cm3 or higher is PA, and a substitution degree by a substituent of which ?? is lower than 2.5×10?24 cm3 is PB, the PA and PB satisfy following Expressions (3) and (4): Expression (3): 2PA+PB>3.0; and Expression (4): PA>0.2.Type: GrantFiled: November 24, 2006Date of Patent: November 20, 2012Assignee: FUJIFILM CorporationInventors: Hiromoto Haruta, Osamu Takahashi, Yutaka Nozoe, Nobutaka Fukagawa, Mitsuyoshi Ichihashi, Hiroaki Sata, Tadashi Omatsu, Masaki Okazaki
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Patent number: 8305525Abstract: There is provided a liquid crystal display device that diminishes flickers caused by crosstalk of a three-dimensional image (an overlap of images) or reflection of external light. A liquid crystal display device includes a pair of substrates, at least one of the pair of substrates having an electrode and the pair of substrates being placed opposite each other, and a first polarizing plate placed on a light source side and a second polarizing plate placed on a view side with the liquid crystal layer sandwiched therebetween, in which a protective film on the view side of the second polarizing plate includes a transparent support satisfying 0?|Re(550)|?10 and an optically anisotropic layer having a ?/4 function, and Rth of the protective film on the view side of the second polarizing plate is |Rth|?20.Type: GrantFiled: February 18, 2011Date of Patent: November 6, 2012Assignee: FUJIFILM CorporationInventors: Yujiro Yanai, Hiroaki Sata, Hajime Nakayama, Yasuyuki Sasada
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Patent number: 8293341Abstract: Provided is a cellulose ester film including a polycondensed ester which is obtained from a mixture containing an aromatic dicarboxylic acid, an aliphatic dicarboxylic acid, an aliphatic diol having an average carbon atom number of from 2.0 to 3.0 and a monocarboxylic acid, and both terminals of which are a monocarboxylic acid ester derivative.Type: GrantFiled: May 15, 2009Date of Patent: October 23, 2012Assignee: FUJIFILM CorporationInventors: Mamoru Sakurazawa, Yasuo Mukunoki, Akihiro Matsufuji, Hiroaki Sata
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Patent number: 8221855Abstract: A cellulose derivative film having high optical isotropy over the whole visible region and high durability against high temperature and humidity conditions is provided. The film contains a cellulose derivative having a substituent the polarizability anisotropy ?? (=?x?(?y+?z)/2) of which is 2.5×10?24 cm3 or more, and the film has an in-plane retardation Re and a thickness direction retardation Rth satisfying the respective inequalities: |Rth(589)|?25 nm and |Re(589)|?10 nm. Also provided are an optical compensation film, a polarizing plate, and a liquid crystal device that use the cellulose derivative film and exhibit excellent viewing angle characteristics and durability.Type: GrantFiled: September 29, 2006Date of Patent: July 17, 2012Assignee: FUJIFILM CorporationInventors: Tadashi Omatsu, Nobutaka Fukagawa, Hiromoto Haruta, Yutaka Nozoe, Tomohiro Ogawa, Hiroaki Sata
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Publication number: 20120147304Abstract: There is provided a liquid crystal display device that diminishes flickers caused by crosstalk of a three-dimensional image (an overlap of images) or reflection of external light. A liquid crystal display device includes a pair of substrates, at least one of the pair of substrates having an electrode and the pair of substrates being placed opposite each other, and a first polarizing plate placed on a light source side and a second polarizing plate placed on a view side with the liquid crystal layer sandwiched therebetween, in which a protective film on the view side of the second polarizing plate includes a transparent support satisfying 0?|Re(550)|?10 and an optically anisotropic layer having a ?/4 function, and Rth of the protective film on the view side of the second polarizing plate is |Rth|?20.Type: ApplicationFiled: February 18, 2011Publication date: June 14, 2012Applicant: FUJIFILM CORPORATIONInventors: Yujiro Yanai, Hiroaki Sata, Hajime Nakayama, Yasuyuki Sasada
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Patent number: 8125597Abstract: A liquid crystal display device includes a pair of polarizing films; a liquid crystal cell that is sandwiched between the pair of polarizing films; a retardation layer (A) of 70 ?m or less in thickness, which is disposed between the liquid crystal cell and one of the pair of polarizing films; and a retardation layer (B) of 70 ?m or less in thickness, which is disposed between the liquid crystal cell and the other of the pair of polarizing films, wherein the retardation layers (A) and (B) satisfy following formulae (1) to (3): RthU>RthD??Formula (1): ?20 nm?RthD?20 nm??Formula (2): 20 nm<RthU?60 nm??Formula (3): wherein RthU and RthD represent a retardation in a thickness direction at a wavelength of 550 nm of the retardation layer (A) and the retardation layer (B), respectively.Type: GrantFiled: February 29, 2008Date of Patent: February 28, 2012Assignee: FUJIFILM CorporationInventors: Hiroaki Sata, Kotaro Yasuda, Junichi Hirakata
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Publication number: 20110151145Abstract: A cellulose ester film is provided and includes a non-phosphoric acid additive. The cellulose ester film has: a degree of alignment of 0.12 or higher in a thickness direction of the cellulose ester film as measured by wide angle X-ray diffractometry; and an average elastic modulus of 3.7 to 4.5 GPa.Type: ApplicationFiled: December 15, 2010Publication date: June 23, 2011Applicant: FUJIFILM CORPORATIONInventors: Kazuo KAMOHARA, Hiroaki SATA, Ryo SUZUKI
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Patent number: 7943210Abstract: A phase difference plate which comprises one sheet of polymer film containing a compound having a rod-shaped molecular structure and exhibiting a maximum absorption wavelength (?max) of less than 250 nm in an ultraviolet spectrum of its solution and which exhibits a retardation value as measured at a wavelength of 450 nm (Re450) of 60 to 135 nm and a retardation value as measured at a wavelength of 590 nm (Re590) of 100 to 170 nm, where the relationship: Re590?Re450?2 nm is satisfied. The phase difference plate functions as a ?/4 plate.Type: GrantFiled: February 13, 2009Date of Patent: May 17, 2011Assignee: Fujifilm CorporationInventors: Hiroshi Takeuchi, Hiroaki Sata, Hiroyuki Kawanishi, Takamichi Fujii
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Publication number: 20110001907Abstract: Thanks to a cellulose ester film comprising at least one kind of a polycondensed ester obtained from at least one kind of an aliphatic diol having an average carbon number of 2.0 to 2.5 and a dicarboxylic acid mixture containing at least one kind of an aromatic ring-containing dicarboxylic acid and at least one kind of an aliphatic dicarboxylic acid and having an average carbon number of 6.0 to 10.0, an excellent cellulose ester film yielding little process contamination at the production and ensuring high production efficiency, a retardation film with excellent characteristics, and a polarizing plate and a liquid crystal display device each using the film, are provided.Type: ApplicationFiled: December 22, 2008Publication date: January 6, 2011Applicant: FUJIFILM CorporationInventors: Mamoru Sakurazawa, Yasuo Mukunoki, Hiroaki Sata
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Patent number: 7839569Abstract: A polarizing plate comprising a polarizer comprising polyvinyl alcohol and a protective film on at least one side of the polarizer, the polarizer having a difference of 5.0% or smaller between maximum and minimum of an in-plane phase difference Rpva thereof in any area thereof measuring 39 cm wide and 65 cm long.Type: GrantFiled: September 13, 2005Date of Patent: November 23, 2010Assignee: Fujifilm CorporationInventors: Ikuko Ohgaru, Hiroaki Sata