Patents by Inventor Katsuyuki Murashiro
Katsuyuki Murashiro 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: 8629225Abstract: A poly(N-alkylcarbazole) columnar structure having electroconductivity is provided. The poly(N-alkylcarbazole) columnar structure having electroconductivity may be produced by electrolytically polymerizing an N-alkylcarbazole in a particular solvent.Type: GrantFiled: March 4, 2011Date of Patent: January 14, 2014Assignees: National University Corporation Chiba University, JNC CorporationInventors: Katsuyoshi Hoshino, Kazuki Takizawa, Katsuyuki Murashiro, Toshiki Komatsu
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Patent number: 8609796Abstract: A novel nanosized or microsized material having electroconductivity that can be produced simply and in a large amount is provided. A method for producing a poly(N-alkylcarbazole) columnar structure having electroconductivity obtained by chemically polymerizing N-alkylcarbazole including alkyl having 1 to 4 carbons by adding an oxidizing agent to a solution obtained by dissolving the N-alkylcarbazole in a solvent is provided.Type: GrantFiled: June 14, 2012Date of Patent: December 17, 2013Assignees: National University Corporation Chiba University, JNC CorporationInventors: Katsuyoshi Hoshino, Takuya Tokuda, Katsuyuki Murashiro, Toshiki Komatsu
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Patent number: 8462419Abstract: There is provided a composition for electrochromic devices which clearly present only two states, a white-colored state and a decolored state. The composition for electrochromic devices contains (A) a specific quaternary ammonium salt, (B) a supporting electrolyte containing bromide ion, and (C) a solvent containing water as an essential component, and (A) is soluble in (C).Type: GrantFiled: October 27, 2011Date of Patent: June 11, 2013Assignees: National University Corporation Chiba University, JNC CorporationInventors: Katsuyoshi Hoshino, Yosuke Oikawa, Mai Ando, Ryota Nakajima, Katsuyuki Murashiro, Toshiki Komatsu
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Publication number: 20120322963Abstract: A novel nanosized or microsized material having electroconductivity that can be produced simply and in a large amount is provided. A method for producing a poly(N-alkylcarbazole) columnar structure having electroconductivity obtained by chemically polymerizing N-alkylcarbazole including alkyl having 1 to 4 carbons by adding an oxidizing agent to a solution obtained by dissolving the N-alkylcarbazole in a solvent is provided.Type: ApplicationFiled: June 14, 2012Publication date: December 20, 2012Applicants: JNC CORPORATION, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITYInventors: KATSUYOSHI HOSHINO, TAKUYA TOKUDA, KATSUYUKI MURASHIRO, TOSHIKI KOMATSU
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Publication number: 20120105933Abstract: There is provided a composition for electrochromic devices which clearly present only two states, a white-colored state and a decolored state. The composition for electrochromic devices contains (A) a specific quaternary ammonium salt, (B) a supporting electrolyte containing bromide ion, and (C) a solvent containing water as an essential component, and (A) is soluble in (C).Type: ApplicationFiled: October 27, 2011Publication date: May 3, 2012Applicants: JNC CORPORATION, NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITYInventors: Katsuyoshi HOSHINO, Yosuke Oikawa, Mai Ando, Ryota Nakajima, Katsuyuki Murashiro, Toshiki Komatsu
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Publication number: 20110274925Abstract: A poly(N-alkylcarbazole) columnar structure having electroconductivity is provided. The poly(N-alkylcarbazole) columnar structure having electroconductivity may be produced by electrolytically polymerizing an N-alkylcarbazole in a particular solvent.Type: ApplicationFiled: March 4, 2011Publication date: November 10, 2011Applicants: NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY, CHISSO CORPORATIONInventors: Katsuyoshi HOSHINO, Kazuki TAKIZAWA, Katsuyuki MURASHIRO, Toshiki KOMATSU
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Patent number: 6759102Abstract: Liquid crystal compositions which comprise as a first component at least one compound selected from the group of compounds represented by the formula (I) and as a second component at least one compound selected from the group of compounds represented by the formula (II), the content of the first component being not less than 30% by weight based on the total weight of the composition wherein R1 and R3 are independently an alkyl of 1 to 10 carbon atoms and any —CH2— in the alkyl may be replaced by —O— or —CH═CH—; R2 is an alkyl of 1 to 10 carbon atoms, —F or —Cl; X1, X2, X3, X4, X5, X6, X7, X8 and X10 are independently —F or —H; X9 is —F, —Cl, —CF3, —OCF3 or —OCF2H; A1 and A2 are independently 1,4-cyclohexylene, pyrimidine-2,5-diyl or 1,4-phenylene in which any —H may be replaced by —F; Z1 and Z3 are independently a single bond, —(CH2)2— or —(CH2)4—; Z2 is a singleType: GrantFiled: April 26, 2002Date of Patent: July 6, 2004Assignees: Chisso Corporation, Chisso Petrochemical CorporationInventors: Katsuyuki Murashiro, Yasuhiro Kubo
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Publication number: 20030085382Abstract: Liquid crystal compositions which comprise as a first component at least one compound selected from the group of compounds represented by the formula (I) and as a second component at least one compound selected from the group of compounds represented by the formula (II), the content of the first component being not less than 30% by weight based on the total weight of the composition 1Type: ApplicationFiled: April 26, 2002Publication date: May 8, 2003Inventors: Katsuyuki Murashiro, Yasuhiro Kubo
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Patent number: 6500502Abstract: A liquid crystal composition having material properties for an STN mode, a low threshold voltage, a small temperature dependency thereat, a high stability to heat and ultraviolet rays, and a small frequency dependency of a dielectric anisotropy (&Dgr;&egr;) at a low temperature. The liquid crystal composition comprises a first component of the formula (1), and a second component selected from the general formulas (2-1) to (2-4), without any liquid crystalline compound having a dielectric anisotropy value (&Dgr;&egr;) of 5 or more and three or more six-membered rings, as another component: wherein R1 to R8, A1 to A5, Z1, m, n and X1 to X5 are defined in the specification.Type: GrantFiled: September 14, 2000Date of Patent: December 31, 2002Assignee: Chisso CorporationInventors: Hiroaki Fujita, Katsuyuki Murashiro, Etsuo Nakagawa
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Patent number: 6495219Abstract: Liquid crystal compositions are disclosed which have low threshold voltage, small temperature dependence of the threshold voltage, high stability against heat and ultraviolet rays, and small frequency dependence of dielectric anisotropy (&Dgr;∈) at low temperature while fulfilling general characteristics required for STN mode materials, characterized by comprising the compound expressed by formula (1) wherein R1 represents alkyl having 1 to 10 carbon in which one methylene may be replaced by —O— or —CH═CH—; X1 and X2 each independently represents H or F.Type: GrantFiled: September 28, 2000Date of Patent: December 17, 2002Assignee: Chisso CorporationInventors: Hiroaki Fujita, Katsuyuki Murashiro, Etsuo Nakagawa
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Patent number: 6207075Abstract: A liquid crystal composition which has a superior voltage transmittance (sharpness) for good color and high-speed response characteristics. The composition contains at least one of the following first component (I-a, I-b), second component (II-a to II-d) and third component (III-a to III-c) respectively: wherein R1, R2, Z0, Z1, Q1, A1, A3, p, q, m and n are defined in the specification.Type: GrantFiled: May 4, 1998Date of Patent: March 27, 2001Assignee: Chisso CorporationInventors: Toshihiko Muraoka, Katsuyuki Murashiro, Fusayuki Takeshita, Tetsuya Matsushita, Etsuo Nakagawa
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Patent number: 5858271Abstract: Liquid crystal compositions are disclosed which satisfy various characteristics required of liquid crystal compositions used for TN-LCD or STN-LCD display mode, have a low viscosity to cope with the response at a high speed, have a high clearing point to cope with the change in environmental temperature, and have a small dependency of the pitch length on temperature. The liquid crystal compositions comprise, as a first component, at least one liquid crystalline 4-substituted-benzonitrile having a positive dielectric anisotropy, as a second component, at least one liquid crystalline compound having a small positive or negative dielectric anisotropy, and as chiral component A, at least one optically active compound expressed by general formula (X-a) or (X-b) ##STR1## wherein R.sup.0 represents an alkyl group or alkoxy group having 1 to 10 carbon atoms, X represents a halogen atom or CN, and Y represents an alkyl group having 1 to 10 carbon atoms or hydrogen atom.Type: GrantFiled: February 7, 1997Date of Patent: January 12, 1999Assignee: Chisso CorporationInventors: Yasuko Sekiguchi, Etsuo Nakagawa, Toyoshiro Isoyama, Tetsuya Matsushita, Katsuyuki Murashiro
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Patent number: 5840208Abstract: A chiral nematic liquid crystal composition which has a broad d/P margin, particularly for corresponding to a large size of LCD panel, while satisfying various characteristics sought for STN display mode, and which contains as a first component, at least one member of compounds expressed by the formulas (I-a) to (I-d); as a second component, at least one member of compounds expressed by the formulas (II) to (V); and as a third component, cholesteryl nonanoate, ##STR1## wherein the substituents are described herein.Type: GrantFiled: March 5, 1997Date of Patent: November 24, 1998Assignee: Chisso CorporationInventors: Takashi Yamaguchi, Katsuyuki Murashiro, Fusayuki Takeshita, Tetsuya Matsushita, Etsuo Nakagawa
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Patent number: 5837161Abstract: Liquid crystal compositions having a small value of .gamma. (V.sub.10 /V.sub.90) and a small .tau. (fast response speed) in order to cope especially with high speed response, while satisfying various characteristics required of STN display mode. These compositions comprise at least one compound expressed by formula (I) as a first component; expressed by any one of formulas (II-a) to (II-d) as a second component; and expressed by formula (III) or (IV) as a third component; and as a fourth component, a chiral component in the amount necessary for maintaining the ratio d/P of the cell thickness d (.mu.m) to the pitch length of twist P (.mu.m) in the range of 0.4 to 0.6 when the liquid crystal composition is used for liquid crystal display devices. ##STR1## wherein R.sup.1 to R.sup.9 represent an alkyl group having 1 to 10 carbon atoms; Z.sup.0 to Z.sup.4 represent, for example, --CH.sub.2 CH.sub.2 --; A.sup.1 to A.sup.Type: GrantFiled: March 24, 1997Date of Patent: November 17, 1998Assignee: Chisso CorporationInventors: Yasuko Sekiguchi, Katsuyuki Murashiro, Fusayuki Takeshita, Tetsuya Matsushita, Etsuo Nakagawa
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Patent number: 5792387Abstract: A liquid crystal composition comprising, for example, a first component of the formula (1-2), a second component of the formula (2-a) and a third component of the formulas (3) and (4), the respective contents being 3 to 30%, 10 to 60% and 20 to 80%, each by weight, ##STR1## wherein R, R.sup.1, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each independently represent an alkyl group of C.sub.1-10 or an alkenyl group of C.sub.2-10 ; R.sup.7 represents an alkyl group, an alkenyl group or an alkoxymethyl group of C.sub.1-10 ; B.sup.1, C, D and J represent 1,4-cyclohexylene or 1,4-phenylene; E represents 1,4-cyclohexylene or pyrimidine-2,5-diyl; G represents 1,4-cyclohexylene or 1,4-phenylene wherein H at the lateral positions may be replaced by F; Z.sup.1 and Z.sup.6 represent --COO--, --C.sub.2 H.sub.4 -- or a single bond; and Z.sup.5 and Z.sup.7 represent --C--C-- or a single bond.Type: GrantFiled: November 27, 1996Date of Patent: August 11, 1998Assignee: Chisso CorporationInventors: Norihisa Hachiya, Katsuyuki Murashiro, Tetsuya Matsushita, Fusayuki Takeshita, Etsuo Nakagawa
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Patent number: 5776366Abstract: A chiral, nematic liquid crystal composition suitable to STN-LCD, having superior steepness, rapid response and being able to prevent occurrence of high order and low order domain of LCD, which composition contains as a first component, at least one compound expressed by the formula (1) ##STR1## as a second component, at least one compound expressed by the formula (2) ##STR2## and as a third component, at least one compound of benzonitrile group, ##STR3## and further having a chiral dopant as a fourth component. In the above formulas, R.sup.1 and R.sup.2 each represent a linear alkyl group of 1 to 10 carbon atoms, A and B each represent trans-1,4-cyclohexylene or 1,4-phenylene, and R.sup.3 represents a linear alkyl group of 1 to 10 carbon atoms, or a group wherein an optional --CH.sub.2 -- or two or more not adjacent --CH.sub.2 --s present in the above group are replaced by --O-- or --CH=CH--; X.sup.1 and X.sup.2 each independently represent H or F; C represents --COO--, --C.sub.2 H.sub.Type: GrantFiled: October 31, 1996Date of Patent: July 7, 1998Assignee: Chisso CorporationInventors: Yoshitaka Tomi, Tetsuya Matsushita, Fusayuki Takeshita, Katsuyuki Murashiro, Etsuo Nakagawa
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Patent number: 5658492Abstract: A composition containing a smectic C compound, having a .DELTA..epsilon. of negative value and enabling to effect a high speed response; a ferroelectric chiral smectic C liquid crystal composition using the same; and a ferroelectric liquid crystal display device using the ferroelectric chiral smectic C liquid crystal composition are provided,which composition containing a smectic C compound comprises at least one compound expressed by the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represent different linear alkyl groups of 1 to 9 C, andat least one compound-expressed by the formula (II) ##STR2## wherein R.sup.3 and R.sup.4 each represent the same or different linear alkyl groups of 1 to 18 C and X is H or F.Type: GrantFiled: January 24, 1996Date of Patent: August 19, 1997Assignees: Chisso Corporation, Sharp Kabushiki KaishaInventors: Katsuyuki Murashiro, Eiji Okabe, Makoto Kikuchi, Mayumi Tanabe, Masatoshi Fukushima, Shinichi Saito, Hitoshi Takeda, Makoto Shiomi, Takashi Kaneko, Motonari Matsuki, Mitsuhiro Koden
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Patent number: 5529717Abstract: A composition containing a smectic C compound, having a .DELTA..epsilon. of negative value and enabling to effect a high speed response; a ferroelectric chiral smectic C liquid crystal composition using the same; and a ferroelectric liquid crystal display device using the ferroelectric chiral smectic C liquid crystal composition are provided,which composition containing a smectic C compound comprises at least one compound expressed by the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represent different linear alkyl groups of 1 to 9 C, andat least one compound expressed by the formula (II) ##STR2## wherein R.sup.3 and R.sup.4 each represent the same or different linear alkyl groups of 1 to 18 C and X is H or F.Type: GrantFiled: June 30, 1994Date of Patent: June 25, 1996Assignees: Chisso Corporation, Sharp Kabushiki KaishaInventors: Katsuyuki Murashiro, Eiji Okabe, Makoto Kikuchi, Mayumi Tanabe, Masatoshi Fukushima, Shinichi Saito, Hitoshi Takeda, Makoto Shiomi, Takashi Kaneko, Motonari Matsuki, Mitsuhiro Koden
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Patent number: 5427714Abstract: A ferroelectric liquid crystal composition having a SC* phase and a light-switching element using the composition are provided, which composition comprises the following components, A, B and C, each in a specified proportion: Component A has the formula ##STR1## wherein ##STR2## R.sup.1 and R.sup.2 are same or different linear or branched alkyl, alkoxy or alkanoyloxy of 1-18C, X is H, halogen or CN, l, m and n are 0 or 1 and (l+m+n) is 1 or 2, and has smectic C phase;Component B has the formula ##STR3## wherein ##STR4## Y is H, halogen or CN, k is 0 or 1, R.sup.3 is linear or branched alkyl or alkoxy of 1-18C, and * is asymmetric C, and consists of optically active compounds having the same senses of Ps in SC* phase induced when dissolved in smectic C liquid crystal, to one another; andComponent C has the formula ##STR5## wherein ##STR6## Z is H, halogen or CN, R.sup.5 and R.sup.6 are same or different linear or branched alkyl or alkoxy of 1-18C R.sup.Type: GrantFiled: July 26, 1993Date of Patent: June 27, 1995Assignee: Chisso CorporationInventors: Katsuyuki Murashiro, Makoto Kikuchi, Kanetsugu Terashima
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Patent number: 5378392Abstract: An antiferroelectric mixture comprising first and second components is provided, the mixing proportions of the first and second components being 60-97 wt. % and 3-40 wt. % based upon the total weight of the two components, respectively, the first component being selected from the group consisting of compounds expressed by the formula (I) and the second component being selected from the group consisting of compounds expressed by the formula (II): ##STR1## wherein R.sup.1 and R.sup.3 are C.sub.1-18 alkyl or alkoxy, R.sup.2 and R.sup.4 are C.sub.2-18 alkyl or alkoxy, X and Y are --CH.sub.3, --CF.sub.3 or --C.sub.2 F.sub.5, rings A, B, C, D and E are 1,4-cyclohexylene, 1,4-phenylene an H atom of which may be replaced by a halogen atom or a cyano group, pyridine-2,5-diyl, pyrimidine-2,5-diyl, pyrazine-2,5-diyl or pyridazine-3,6-diyl, Z is --COO--, --CH.sub.2 O-- or --OCH.sub.2 --, m and n each are 1 or 2, (m+n) is 3, and Z is 0 or 1.Type: GrantFiled: July 23, 1992Date of Patent: January 3, 1995Assignee: Chisso CorporationInventors: Katsuyuki Murashiro, Kikuchi Makoto, Terashima Kanetsugu