Patents by Inventor Manabu Naito
Manabu Naito 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: 9873763Abstract: The present disclosure, in one aspect, relates to a polyamide solution including an aromatic polyamide and a solvent, wherein the aromatic polyamide includes at least two types of constitutional units, and a change rate of coefficient of thermal expansion (CTE) of a cast film produced by casting the polyamide solution on a glass plate and CTE of the same cast film after being subjected to a heat treatment at temperature of 200° C. to 450° C. (=CTE after heat treatment/CTE before heat treatment) is 1.3 or less.Type: GrantFiled: October 1, 2014Date of Patent: January 23, 2018Assignees: AKRON POLYMER SYSTEMS, INC., SUMITOMO BAKELITE CO., LTD.Inventors: Limin Sun, Dong Zhang, Jiaokai Jing, Frank W. Harris, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Mizuho Inoue, Manabu Naito
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Publication number: 20160053116Abstract: In one aspect, a polymer film having improved mechanical properties is provided. In one aspect, a polymer solution containing a solvent and a polymer that contains either a structural unit having a benzoxazole precursor structure or a structural unit having a benzoxazole structure is provided.Type: ApplicationFiled: April 2, 2014Publication date: February 25, 2016Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Toshimasa EGUCHI, Hideo UMEDA, Ritsuya KAWASAKI, Toshihiko KATAYAMA, Manabu NAITO
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Publication number: 20150232697Abstract: In an aspect, the present disclosure relates to a polyamide solution including aromatic polyamide and a solvent. A dimension change gap between a cast film of the polyamide solution and the cast film after being subjected to a heat treatment is not more than a predetermined value. In another aspect, the present disclosure relates to a method for manufacturing a display element, an optical element, an illumination element or a sensor element, including a step of forming a polyamide film by using the polyamide solution.Type: ApplicationFiled: February 19, 2015Publication date: August 20, 2015Applicants: AKRON POLYMER SYSTEMS, INC., SUMITOMO BAKELITE CO., LTD.Inventors: Limin SUN, Dong Zhang, Frank W. Harris, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Mizuho Inoue, Manabu Naito
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Publication number: 20150115255Abstract: Provided are a resin composition and a substrate that are capable of being used for manufacturing an electronic device having excellent light extraction efficiency. The resin composition contains a polymer and a solvent dissolving the polymer. The resin composition is used to form a layer, and when refractive indexes of the layer along two perpendicular in-plane directions thereof are respectively defined as “Nx” and “Ny” and a refractive index of the layer along a thickness direction thereof is defined as “Nz”, Nx, Ny and Nz satisfy a relationship of “(Nx+Ny)/2?Nz”>0.01. Further, a method of manufacturing the electronic device by using such a substrate, and the electronic device are also provided.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Applicants: AKRON POLYMER SYSTEMS INC., SUMITOMO BAKELITE COMPANY LIMITEDInventors: Limin SUN, Jiaokai Jing, Dong Zhang, Frank W. Harris, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Mizuho Inoue, Manabu Naito
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Publication number: 20150108457Abstract: Provided are a resin composition and a substrate that are capable of being used for manufacturing an electronic device including a transparent resin film having an excellent display property, a method of manufacturing such a resin composition and a method of manufacturing the electronic device using such a substrate and the electronic device. The resin composition of the present invention contains an aromatic polyamide, an aromatic multifunctional compound having two or more functional groups including a carboxyl group or an amino group, and a solvent dissolving the aromatic polyamide.Type: ApplicationFiled: October 22, 2014Publication date: April 23, 2015Applicants: AKRON POLYMER SYSTEMS INC., SUMITOMO BAKELITE COMPANY LIMITEDInventors: Limin Sun, Dong Zhang, Jiaokai Jing, Frank W. Harris, Hideo Umeda, Ritsuya Kawasaki, Jun Okada, Mizuho Inoue, Manabu Naito
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Publication number: 20150097174Abstract: Provided are a resin composition and a substrate that are capable of being used for manufacturing an electronic device having excellent light extraction efficiency. The resin composition contains a crystalline polymer and a solvent dissolving the crystalline polymer. The resin composition is used to form a layer, and a haze value of the layer is 5% or more. Further, a method of manufacturing the electronic device by using such a substrate, and the electronic device are also provided.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Applicants: AKRON POLYMER SYSTEMS INC., SUMITOMO BAKELITE COMPANY LIMITEDInventors: Limin SUN, Dong ZHANG, Jiaokai JING, Frank W. HARRIS, Hideo UMEDA, Jun OKADA, Manabu NAITO
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Publication number: 20150099131Abstract: The present disclosure, in one aspect, relates to a polyamide solution including an aromatic polyamide and a solvent, wherein the aromatic polyamide includes at least two types of constitutional units, and a change rate of coefficient of thermal expansion (CTE) of a cast film produced by casting the polyamide solution on a glass plate and CTE of the same cast film after being subjected to a heat treatment at temperature of 200° C. to 450° C. (=CTE after heat treatment/CTE before heat treatment) is 1.3 or less.Type: ApplicationFiled: October 1, 2014Publication date: April 9, 2015Applicants: AKRON POLYMER SYSTEMS, INC., SUMITOMO BAKELITE CO., LTD.Inventors: Limin SUN, Dong Zhang, Jiaokai Jing, Frank W. Harris, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Mizuho Inoue, Manabu Naito
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Publication number: 20150099332Abstract: Provided are a resin composition and a substrate that are capable of being used for producing an electronic device including thin-film transistors having an excellent switching property. The resin composition contains an aromatic polyamide and a solvent dissolving the aromatic polyamide. The resin composition is used to form a layer, and a total light transmittance of the layer in a wavelength of 355 nm is 10% or less. Further, a method of manufacturing the electronic device using such a substrate is also provided.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Applicants: AKRON POLYMER SYSTEMS INC., SUMITOMO BAKELITE COMPANY LIMITEDInventors: Limin SUN, Dong ZHANG, Jiaokai JING, Frank W. HARRIS, Hideo UMEDA, Toshihiko KATAYAMA, Jun OKADA, Mizuho INOUE, Manabu NAITO
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Publication number: 20140356636Abstract: This disclosure, in one or plurality of embodiments, relates to a solution of polyamide from which a cast film with low CTE and Rth can be achieved. This disclosure, viewed from one aspect, relates to a solution of polyamide comprising: an aromatic polyamide; inorganic filler; and a solvent. This disclosure, viewed from one aspect, relates to a laminated composite material, comprising a base, and a polyamide resin layer: wherein the polyamide resin layer is laminated to one surface of the base; and wherein the polyamide resin layer is obtained or obtainable by applying a polyamide solution comprising an aromatic polyamide, an inorganic filler and a solvent onto the base.Type: ApplicationFiled: May 28, 2014Publication date: December 4, 2014Applicants: Akron Polymer Systems, Inc., Sumitomo Bakelite Co., Ltd.Inventors: Limin SUN, Jiaokai JING, Dong ZHANG, Frank W. HARRIS, Hideo UMEDA, Ritsuya KAWASAKI, Toshihiko KATAYAMA, Yusuke INOUE, Jun OKADA, Mizuho INOUE, Manabu NAITO
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Publication number: 20140307398Abstract: An image display device includes: a plate-like base substrate (22), a transparent opposite substrate (3) provided opposite to the base substrate (22) and having flexibility, and a display element provided between the base substrate (22) and the opposite substrate (3), the display element including a transparent element substrate (41) having flexibility and a working unit (43) provided on a side of one surface of the element substrate (41), wherein each of the opposite substrate (3) and the element substrate (41) contains a resin material or a plate-like glass base member, and wherein in the case where the opposite substrate (3) contains the glass base member, an average thickness of the opposite substrate (3) is in the range of 0.02 to 0.2 mm, and in the case where the element substrate (41) contains the glass base member, an average thickness of the element substrate (41) is in the range of 0.02 to 0.2 mm.Type: ApplicationFiled: November 29, 2012Publication date: October 16, 2014Applicant: SUMITOMO BAKELITE COMPANY LIMITEDInventors: Toshimasa Eguchi, Toshiaki Chuma, Manabu Naito
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Publication number: 20140305597Abstract: This disclosure, viewed from one aspect, relates to a solution of polyamide comprising: an aromatic polyamide; and a solvent; wherein elastic modulus at 30.0° C. of a cast film formed by applying the solution onto a glass plate is 5.0 GPa or less, and coefficient of thermal expansion (CTE) of the cast film is more than 30 ppm/K, and wherein the aromatic copolyamide comprises at least two repeat units, and at least one of the repeat units has one or more free carboxyl groups.Type: ApplicationFiled: April 14, 2014Publication date: October 16, 2014Applicants: Akron Polymer Systems, Inc., Sumitomo Bakelite Co., Ltd.Inventors: Frank W. HARRIS, Dong Zhang, Limin Sun, Jiaokai Jing, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Mizuho Inoue, Manabu Naito
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Publication number: 20140299264Abstract: This disclosure, in one aspect, relates to a solution of polyamide including an aromatic polyamide and an amphiphilic solvent. This disclosure, in another aspect, relates to a solution of polyamide including an aromatic polyamide, an amphiphilic solvent, and an aprotic solvent. This disclosure, in another aspect, relates to a solution of aromatic polyamide for producing a display element, an optical element or an illumination element.Type: ApplicationFiled: April 4, 2014Publication date: October 9, 2014Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Hideo UMEDA, Ritsuya KAWASAKI, Jun OKADA, Mizuho INOUE, Manabu NAITO
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Publication number: 20140273686Abstract: A transparent composite substrate according to the present invention includes a composite layer containing a glass cloth formed of an assembly of glass fibers and a resin material impregnated in the glass cloth. The resin material has an Abbe number of equal to or larger than 45. The assembly of the glass fibers itself has a variation in a refractive index and a difference between a maximum value and a minimum value of the refractive index is equal to or less than 0.01. This makes it possible to provide a transparent composite substrate having superior optical characteristics and a high-reliable display element substrate using the transparent composite substrate. Further, the resin material preferably contains an alicyclic epoxy resin or an alicyclic acrylic resin as a major component thereof.Type: ApplicationFiled: November 6, 2012Publication date: September 18, 2014Applicant: SUMITOMO BAKELITE COMPANY LIMITEDInventors: Toshimasa Eguchi, Hideo Umeda, Manabu Naito, Hiroyuki Otsuka
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Publication number: 20140242865Abstract: A transparent composite substrate according to the present invention includes a composite layer containing a glass cloth formed of an assembly of glass fibers and a resin material impregnated in the glass cloth. The assembly of the glass fibers itself has a variation in a refractive index and a difference between a maximum value and a minimum value of the refractive index is equal to or less than 0.008. According to the present invention, it is possible to provide a transparent composite substrate having superior optical characteristic and a high-reliable display element substrate having the transparent composite substrate.Type: ApplicationFiled: September 21, 2012Publication date: August 28, 2014Applicant: Sumitomo Bakelite Company LimitedInventors: Hideo Umeda, Manabu Naito, Hiroyuki Otsuka, Toshimasa Eguchi
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LAMINATED COMPOSITE MATERIAL FOR PRODUCING DISPLAY ELEMENT, OPTICAL ELEMENT, OR ILLUMINATION ELEMENT
Publication number: 20140234532Abstract: This disclosure, viewed from one aspect, relates to a laminated composite material, including a glass plate and an organic resin layer. The organic resin layer is laminated on one surface of the glass plate, the organic resin is a polyamide resin, the rate of mass change of the polyamide resin from 300° C. to 400° C. measured by thermo gravimetry (TG) is 3.0% or less, and the glass transition temperature of the polyamide resin is 300° C. or more.Type: ApplicationFiled: February 12, 2014Publication date: August 21, 2014Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Hideo UMEDA, Ritsuya KAWASAKI, Toshihiko KATAYAMA, Yusuke INOUE, Jun OKADA, Mizuho INOUE, Manabu NAITO -
Publication number: 20140084499Abstract: The present disclosure is directed toward solutions, transparent films prepared from aromatic copolyamides, and a display element, an optical element or an illumination element using the solutions and/or the films. The copolyamides, which contain pendant carboxylic groups are solution cast into films using cresol, xylene, N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), dimethylsulfoxide (DMSO), or butyl cellosolve or other solvents or mixed solvent which has more than two solvents. When the films are thermally cured at temperatures near the copolymer glass transition temperature, after curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant.Type: ApplicationFiled: September 24, 2013Publication date: March 27, 2014Applicants: Akron Polymer Systems, Inc., Sumitomo Bakelite Co., Ltd.Inventors: Frank W. HARRIS, Dong Zhang, Limin Sun, Jiaokai Jing, Toshimasa Eguchi, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Fumihiro Maeda, Mizuho Inoue, Manabu Naito
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Publication number: 20140083624Abstract: The present disclosure is directed toward solutions, transparent films prepared from aromatic copolyamides, and a display element, an optical element or an illumination element using the solutions and/or the films. The copolyamides, which contain pendant carboxylic groups are solution cast into films using cresol, xylene, N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), dimethylsulfoxide (DMSO), or butyl cellosolve or other solvents or mixed solvent which has more than two solvents. When the films are thermally cured at temperatures near the copolymer glass transition temperature, after curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant.Type: ApplicationFiled: September 24, 2013Publication date: March 27, 2014Applicants: Akron Polymer Systems, Inc., Sumitomo Bakelite Co., Ltd.Inventors: Frank W. Harris, Dong Zhang, Limin Sun, Jiaokai Jing, Toshimasa Eguchi, Hideo Umeda, Ritsuya Kawasaki, Toshihiko Katayama, Yusuke Inoue, Jun Okada, Fumihiro Maeda, Mizuho Inoue, Manabu Naito
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Publication number: 20100009149Abstract: A transparent composite sheet that has a small linear expansion coefficient, excellent transparency/heat resistance, minimal optical anisotropy, and a high degree of flatness, and that also has excellent impact resistance and flexibility; and a substrate for a display element. A transparent composite sheet obtained by curing a composite composition comprising a glass filler and a transparent resin composition that includes an alicyclic epoxy resin indicated by Chemical Formula (1) below and/or an alicyclic epoxy resin indicated by Chemical Formula (2) below; at least one type of compound other than the alicyclic epoxy resin having a cationic-polymerizable functional group; and a curing agent; wherein the admixture ratio of the alicyclic epoxy resin and the compound having a cationic-polymerizable functional group is preferably 99:1 to 70:30.Type: ApplicationFiled: August 30, 2007Publication date: January 14, 2010Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Wataru Oka, Takeshi Ito, Hisashi Ito, Manabu Naito