Patents by Inventor Norio Tamura
Norio Tamura 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: 11155753Abstract: There is provided a liquid crystal composition which has favorable characteristics and excellent characteristic balance as a material for an element used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz.Type: GrantFiled: October 21, 2019Date of Patent: October 26, 2021Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norio Tamura, Yoichi Uriu, Eiji Okabe, Koki Sago
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Publication number: 20200332193Abstract: There is provided an element which has large dielectric anisotropy and low dielectric loss in a high frequency range, has high reliability, and is used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz. An element in which a liquid crystal composition contains a compound represented by the following Formula (1) and has a refractive index anisotropy of 0.Type: ApplicationFiled: April 15, 2020Publication date: October 22, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norio TAMURA, Yoichi Uriu
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Publication number: 20200263090Abstract: The disclosure provides a liquid crystal composition having favorable characteristics and excellent characteristic balance as a material used for an element used for phase control of an electromagnetic wave signal having a frequency of 1 MHz to 400 THz. A liquid crystal composition which is used for phase control of an electromagnetic wave signal having a frequency of 1 MHz to 400 THz, and which includes a compound selected from the group represented by Formula (1), in Formula (1), the ring A0 to the ring A4 are each independently 1,4-phenylene and the like; Z0 to Z3 are each independently a single bond or —CF2O—, where —CF2O— is one or less in Z0 to Z3; p is 0 or 1; and R1 is alkyl having 1 to 12 carbon atoms and the like, and R11 is —CN and the like.Type: ApplicationFiled: February 13, 2020Publication date: August 20, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yoichi URYU, Norio TAMURA, Eiji OKABE, Koki SAGO, HITOSHI TOBATA
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Publication number: 20200224099Abstract: There is provided a liquid crystal composition which has favorable characteristics and excellent characteristic balance as a material for an element used for phase control of an electromagnetic wave signal with a frequency of 1 MHz to 400 THz.Type: ApplicationFiled: October 21, 2019Publication date: July 16, 2020Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Norio TAMURA, Yoichi Uriu, Eiji OKABE, KOKI SAGO
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Publication number: 20180163135Abstract: Liquid crystal polymerization films, prepared by applying a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound represented by formula (2) on an alignment film prepared by calcinating a composition containing a polymer represented by a repeating unit of formula (1), and subsequently polymerizing the polymerizable liquid crystal composition. In formula (1), R1 is independently a tetravalent group, R2 is independently a divalent functional group and R3 is independently a hydrogen atom or a monovalent functional group. PG1-Sp1-R4-Sp2-PG2??(2) In formula (2), R4 represents a divalent group formed by combining five or more and nine or less of alicycles and/or aromatic rings, SP1 and SP2 represent a spacer group, and PG1 and PG2 represents an alkyl group, an alkoxyl group, a cyano group, fluorine or a polymerizable functional group, in which either group is the polymerizable functional group.Type: ApplicationFiled: December 6, 2017Publication date: June 14, 2018Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Daisuke OOTSUKI, Nagahisa MIYAGAWA, Norio TAMURA
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Patent number: 8730435Abstract: In a liquid crystal display device having a plurality of retardation films for alleviating a deterioration in display quality depending on a viewing angle direction, and a driving liquid crystal layer selected from the group consisting of a driving liquid crystal layer typified by a VA mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned perpendicular to a substrate when no electric field is applied, a driving liquid crystal layer typified by an IPS mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned parallel to the substrate when no electric field is applied, and a driving liquid crystal layer that shows optical isotropy when no voltage is applied, a retardation film of a positive A-plate formed of a liquid crystalline polyimide having a photoreactive group is used as at least one layer of the plurality of retardation films.Type: GrantFiled: June 30, 2010Date of Patent: May 20, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Kazuhiko Saigusa, Norio Tamura
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Publication number: 20120274888Abstract: A polyamic acid-type photo-alignment layer in a heating process only below approximately 140° C., and an optically anisotropic substance in which various polymerizable liquid crystal compositions are uniformly oriented by use of the layer are provided. An optically anisotropic substance obtained by applying a polyamic acid varnish which is a composition including a polyamic acid having a divalent azobenzene group in the principal chain or its derivative, or a composition including a mixture of both this polyamic acid or its derivative and other polyamic acids or its derivative as a polymer component, to a supporting substrate, by drying the resultant layer at a temperature range of approximately 50° C. to approximately 140° C., by carrying out alignment treatment by irradiation of the layer with light, applying a polymerizable liquid crystal composition to a alignment layer formed by means of the treatment, and polymerizing the composition.Type: ApplicationFiled: July 12, 2012Publication date: November 1, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YOSHIHARU HIRAI, NORIO TAMURA
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Patent number: 8263732Abstract: [Object] To obtain an alignment film having excellent alignment stability of a liquid crystal and a high voltage holding ratio by application of linearly polarized light to a polyamic acid having a specific structure and then imidization under heat. [Solving Means] A photo-alignment film is obtained by: applying a polyamic acid solution on a substrate, where the polyamic acid contains, in its main chain, at least a group having unsaturated groups having 1 to 3 carbon-carbon double bonds or 1 to 4 triple bonds; vaporizing a solvent from a film formed; applying linearly polarized light to the film after the vaporization of the solvent; and then heating the film to imidize the polyamic acid.Type: GrantFiled: March 12, 2007Date of Patent: September 11, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventor: Norio Tamura
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Publication number: 20120133871Abstract: Provided is a technology by which a retardation film in which regions different from each other in one or both of optical characteristics, i.e., an optical axis and a retardation are patterned can be produced with an additionally small load. The retardation film is formed of a liquid crystalline polyimide film having a photoreactive group. Further provided is an optical device and a liquid crystal display apparatus each having the retardation film.Type: ApplicationFiled: June 17, 2010Publication date: May 31, 2012Applicants: JNC Petrochemical Corporation, JNC CorporationInventors: Kazuhiko Saigusa, Norio Tamura
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Publication number: 20120113338Abstract: In a liquid crystal display device having a plurality of retardation films for alleviating a deterioration in display quality depending on a viewing angle direction, and a driving liquid crystal layer selected from the group consisting of a driving liquid crystal layer typified by a VA mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned perpendicular to a substrate when no electric field is applied, a driving liquid crystal layer typified by an IPS mode wherein a liquid crystal molecule in a driving liquid crystal medium is aligned parallel to the substrate when no electric field is applied, and a driving liquid crystal layer that shows optical isotropy when no voltage is applied, a retardation film of a positive A-plate formed of a liquid crystalline polyimide having a photoreactive group is used as at least one layer of the plurality of retardation films.Type: ApplicationFiled: June 30, 2010Publication date: May 10, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Kazuhiko Saigusa, Norio Tamura
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Publication number: 20100297367Abstract: Subject to be Solved The invention aims to provide a polyamic acid-type photo-alignment layer in a heating process only below approximately 140° C., and to provide an optically anisotropic substance in which various polymerizable liquid crystal compositions are uniformly oriented by use of the layer. Means for Solving the Subject An optically anisotropic substance obtained by applying a polyamic acid varnish which is a composition including a polyamic acid having a divalent azobenzene group in the principal chain or its derivative, or a composition including a mixture of both this polyamic acid or its derivative and other polyamic acids or its derivative as a polymer component, to a supporting substrate, by drying the resultant layer at a temperature range of approximately 50° C. to approximately 140° C.Type: ApplicationFiled: May 17, 2010Publication date: November 25, 2010Applicants: CHISSO CORPORATION, CHISSO PETROCHEMICAL CORPORATIONInventors: YOSHIHARU HIRAI, NORIO TAMURA
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Publication number: 20070232780Abstract: [Object] To obtain an alignment film having excellent alignment stability of a liquid crystal and a high voltage holding ratio by application of linearly polarized light to a polyamic acid having a specific structure and then imidization under heat. [Solving Means] A photo-alignment film is obtained by: applying a polyamic acid solution on a substrate, where the polyamic acid contains, in its main chain, at least a group having unsaturated groups having 1 to 3 carbon-carbon double bonds or 1 to 4 triple bonds; vaporizing a solvent from a film formed; applying linearly polarized light to the film after the vaporization of the solvent; and then heating the film to imidize the polyamic acid.Type: ApplicationFiled: March 12, 2007Publication date: October 4, 2007Applicants: CHISSO CORPORATION, CHISSO PETROCHEMICAL CORPORATIONInventor: NORIO TAMURA
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Patent number: 6576303Abstract: Novel liquid crystal compound having a negative and absolutely large value of dielectric anisotropy, being excellent in compatibility with other liquid crystalline compounds at a low temperature and being stable chemically and physically, as well as a liquid crystal composition comprising this compound, and a liquid crystal display device comprising this liquid crystal composition are provided, said compound is expressed by the general formula (1): R1—A1—B1—A2—B2—A3—B3—Z—B4—A4—R2 (1) wherein A1, A2, A3 and A4 represent a single bond, 1,4-cyclohexylene, 1,4-phenylene which may be substituted with a fluorine atom(s) or the like; B1, B2, B3 and B4 represent a single bond, 1,2-ethylene, 1,2-ethenylene, 1,2-ethynylene, oxymethylene, methyleneoxy or the like; R1 and R2 represent an alkyl group having 1 to 10 carbon atoms or the like; and Z represents (I) to (VI): wherein X represents H or F, and Y represents difluoromethyl grType: GrantFiled: August 24, 2000Date of Patent: June 10, 2003Assignee: Chisso CorporationInventors: Norio Tamura, Atsuko Fujita, Hiroyuki Tekeuchi, Fusayuki Takeshita, Etsuo Nakagawa
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Patent number: 6485799Abstract: A aniline derivative represented by general formula (1) wherein R and R′ represent independently each other alkyl with 1 to 10 carbon, alkoxyalkyl with 1 to 10 carbon, or hydrogen; x represents cyano, halogen, haloalkyl, haloalkyloxy, or 2-cyanoethynyl; Y represents fluorine or hydrogen; na and nc represent independently each other 0 or 1; Za, Zb, and Zc represent independently each other a single bond, 1,2-ethylene, carbonyloxy, or oxymethylene; ring A1 represents 1,4-phenylene in which hydrogen may be substituted by fluorine; ring A2 and ring A3 represent independently each other 1,4-cyclohexylene, 1,4-phenylene in which hydrogen may be substituted by fluorine, or 1,3-pyrimidine-2,5-diyl.Type: GrantFiled: July 24, 2000Date of Patent: November 26, 2002Assignee: Chisso CorporationInventors: Atsuko Fujita, Norio Tamura, Hiroyuki Tekeuchi, Fusayuki Takeshita, Nobumasa Nakamura, Etsuo Nakagawa
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Patent number: 6372153Abstract: Liquid crystalline compounds superior in having an eminent dielectric anisotropy, being stable against environment and having improved miscibility with other liquid crystalline compounds, as well as a liquid crystal composition with driving-ability at a low voltage and responsibility at a high-speed comprising the compounds as a constituting component, and a liquid crystal display element comprising the composition are provided, said compounds are fluoroalkoxybenzene derivatives expressed by the general formula (1) wherein A1, A2 and A3 each independently denote trans-1,4-cyclohexylene,1,4-phenylene or so; B, B2 and B3 each independently denote a single bond, 1,2-ethylene or so; R denotes an alkyl group having 1 to 15 carbon atoms optionally substitutable with a halogen atom(s); Rf denotes a fluoroalkyl group having 1 to 3 carbon; k, m, and n each independently denote 0 or 1; with the proviso that when k=0 is a case, then one of B1, B2 and B3 is a methyleneoxy bond or so, and that wheType: GrantFiled: March 13, 2000Date of Patent: April 16, 2002Assignee: Chisso CorporationInventors: Norio Tamura, Hiroyuki Takeuchi, Shuichi Matsui, Kazutoshi Miyazawa, Yasusuke Hisatsune, Fusayuki Takeshita, Etsuo Nakagawa
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Patent number: 6333080Abstract: A liquid crystalline alkenyltolan derivative expressed by the general formula CtH2t−1—G—(CH2)m—A1—B1—(A2—B2)n—(A3—B3)p—A4—X wherein A1, A2, A3, and A4 independently represent a 1,4-cyclohexylene, 1,4-phenylene in which one or two hydrogen atoms may be replaced by a fluorine atom(s), dioxane-2,5-diyl, or pyrimidine-2,5-diyl group; B1, B2, and B3 independently represent a covalent bond, an 1,2-ethylene, 1,2-ethenylene, 1,2-ethynylene, oxymethylene, methylenoxy, carbonyloxy, or 1,4-butylene group provided that at least one of B1, B2, and B3 represents an 1,2-ethynylene group; G represents a covalent bond or an oxygen atom; CtH2t−1 represents an alkenyl group having t carbon atoms; n and p are each 0 or 1; and X represents an alkyl group having 1 to 10 carbon atoms.Type: GrantFiled: May 6, 1999Date of Patent: December 25, 2001Assignee: Chisso CorporationInventors: Norio Tamura, Atsuko Fujita, Shuichi Matsui, Kazutoshi Miyazawa, Norihisa Hachiya, Etsuo Nakagawa
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Patent number: 6149838Abstract: Liquid crystalline compounds having a wide temperature range of liquid crystal phase, a high dielectric anisotropy, and a high optical anisotropy; and liquid crystal compositions and display devices containing the composition. The liquid crystalline compounds are conjugated nitrile derivatives expressed by the formula (1) ##STR1## wherein R represents an alkyl group or a fluoroalkyl group each having 1 to 10 carbon atoms, halogen atom, or cyano group provided that in the alkyl or fluoroalkyl group, one or not-adjacent two or more methylene or fluoromethylene groups may be replaced by oxygen atom or 1,2-ethenylene group; A.sub.1, A.sub.2, A.sub.3 and A.sub.4 represent 1,4-cyclohexylene group, 1,4-phenylene in which one or two hydrogen atoms on the ring may be replaced by fluorine atom, 1,3-dioxane-2,5-diyl, or pyrimidine-2,5-diyl; B.sub.1, B.sub.2, and B.sub.Type: GrantFiled: May 28, 1999Date of Patent: November 21, 2000Assignee: Chisso CorporationInventors: Atsuko Fujita, Norio Tamura, Shuichi Matsui, Kazutoshi Miyazawa, Hiroyuki Takeuchi, Yasuhiro Kubo, Fusayuki Takeshita, Etsuo Nakagawa
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Patent number: 6017467Abstract: A propiolonitrile derivative of formula (I) ##STR1## wherein n1 and n2 each independently stand for 0 or 1; A1, A2 and A3 each independently represent a 1,4-phenylene, a 1,4-phenylene substituted by one or more fluorine atoms, a trans-1,4-cyclohexylene, a 1,3-dioxane-2,5-diyl or a 1,3-pyrimidine-2,5-diyl; Z1, Z2 and Z3 each independently represent a single bond, ethylene, ethenylene, ethynylene, carbonyloxy, oxycarbonyl, methyleneoxy, oxymethylene, 1,4-butylene or 1,4-butenylene; R represents a saturated, aliphatic hydrocarbyl radical of 1-10 carbons, an unsaturated, aliphatic hydrocarbyl radical of 2-10 carbons, a saturated or unsaturated, aliphatic hydrocarbyl radical of 1-10 carbons containing one or more ether linkages (--O--) in the chain and a saturated or unsaturated, fluoro-substituted aliphatic hydrocarbyl radical of 1-10 carbons containing one or more fluorine atoms in the chain; X1 and X2 each independently represent H, F or Cl;provided that at least one of X1 and X2 is F or Cl, when both n1 and n2Type: GrantFiled: June 13, 1997Date of Patent: January 25, 2000Assignee: Chisso CorporationInventors: Atsuko Fujita, Shuichi Matsui, Hiroyuki Takeuchi, Kazutoshi Miyazawa, Norio Tamura, Norihisa Hachiya, Etsuo Nakagawa
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Patent number: 5410661Abstract: A fractional data processing is performed until a copy source character string comes to K-byte boundary (e.g., K=8). Then, a series of steps of loading data K-bytes at a time, generating data according to the byte-boundary of the copy destination, and storing data K bytes at a time are repeated. If there is any fractional data remaining at the end part of the character string, the fractional data is copied in the copy destination area.Type: GrantFiled: March 17, 1994Date of Patent: April 25, 1995Assignee: Fujistu LimitedInventor: Norio Tamura