Patents by Inventor Isao Nishi
Isao Nishi 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: 8391654Abstract: A wavelength selection switch that includes an optical component for adjusting an optical path with an image magnification of M that is provided between a second imaging position and a mirror array. Therefore, it is possible to provide a small wavelength selection optical switch with a short optical path length that is capable of reducing the focal length of each of a first lens and a second lens to 1/M while maintaining the structure of the spectral element, the fiber array, and the mirror array according to the related art. Since the optical path length is reduced, it is possible to reduce the number of reflecting mirrors used to convert an optical path and thus reduce the size of a housing. Therefore, it is possible to reduce manufacturing costs.Type: GrantFiled: June 18, 2009Date of Patent: March 5, 2013Assignee: NTT Electronics CorporationInventors: Toshiki Nishizawa, Isao Nishi, Yuji Mitsuhashi
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Patent number: 8110625Abstract: Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.Type: GrantFiled: August 4, 2010Date of Patent: February 7, 2012Assignees: Bridgestone Corporation, Kao CorporationInventors: Daisuke Nohara, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Publication number: 20110103739Abstract: A wavelength selection switch that includes an optical component for adjusting an optical path with an image magnification of M that is provided between a second imaging position and a mirror array. Therefore, it is possible to provide a small wavelength selection optical switch with a short optical path length that is capable of reducing the focal length of each of a first lens and a second lens to 1/M while maintaining the structure of the spectral element, the fiber array, and the mirror array according to the related art. Since the optical path length is reduced, it is possible to reduce the number of reflecting mirrors used to convert an optical path and thus reduce the size of a housing. Therefore, it is possible to reduce manufacturing costs.Type: ApplicationFiled: June 18, 2009Publication date: May 5, 2011Inventors: Toshiki Nishizawa, Isao Nishi, Yuji Mitsuhashi
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Publication number: 20100298488Abstract: Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.Type: ApplicationFiled: August 4, 2010Publication date: November 25, 2010Applicants: BRIDGESTONE CORPORATION, KAO CORPORATIONInventors: Daisuke NOHARA, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Patent number: 7799856Abstract: Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.Type: GrantFiled: October 4, 2002Date of Patent: September 21, 2010Assignees: Bridgestone Corporation, KAO CorporationInventors: Daisuke Nohara, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Publication number: 20040249032Abstract: Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.Type: ApplicationFiled: March 31, 2004Publication date: December 9, 2004Inventors: Daisuke Nohara, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Patent number: 6806303Abstract: An additive for a rubber composition consists essentially of an ester of (i) an aliphatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group in its molecule, or an ester of (ii) an aromatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group bonded to an aromatic ring in its molecule. And also, it relates to an additive composition, a rubber composition and a pneumatic tire using such an additive for a rubber composition.Type: GrantFiled: August 8, 2001Date of Patent: October 19, 2004Assignees: Bridgestone Corporation, Kao CorporationInventors: Daisuke Nohara, Jingo Shirasaka, Isao Nishi, Masaaki Tsuchihashi, Tetsuo Takano
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Patent number: 6559209Abstract: A rubber composition and method of making a rubber composition which is improved in a dispersibility of silica into rubber, a heat generating property and an abrasion property.Type: GrantFiled: October 9, 1997Date of Patent: May 6, 2003Assignees: Bridgestone Corporation, Kao CorporationInventors: Shunji Araki, Masaaki Tsuchihashi, Isao Nishi
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Publication number: 20020042462Abstract: An additive for a rubber composition consists essentially of an ester of (i) an aliphatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group in its molecule, or an ester of (ii) an aromatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group bonded to an aromatic ring in its molecule. And also, it relates to an additive composition, a rubber composition and a pneumatic tire using such an additive for a rubber composition.Type: ApplicationFiled: August 8, 2001Publication date: April 11, 2002Applicant: BRIDGESTONE CORPORATIONInventors: Daisuke Nohara, Jingo Shirasaka, Isao Nishi, Masaaki Tsuchihashi, Tetsuo Takano
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Patent number: 6355710Abstract: A rubber composition comprising (A) at least one natural or synthetic diene rubber, (B) an inorganic filler comprising at least one of silica and silicates as the main component and (C) an addition salt of an amine represented by general formula (I): wherein R1 represents a C8 to C24 alkyl group, an aryl group or an aralkyl group, R2 and R3 represent a hydrogen atom, a C1 to C12 alkyl group, an aryl group, an aralkyl group or a hydroxyalkyl group and R4 represents a C6 to C24 alkyl or alkenyl group, an aryl group or an aralkyl group; and a pneumatic tire produced by using the rubber composition.Type: GrantFiled: August 28, 2000Date of Patent: March 12, 2002Assignees: Bridgestone Corporation, Kao CorporationInventors: Kazuhiro Yanagisawa, Masaaki Tsuchihashi, Isao Nishi, Tetsuo Takano
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Patent number: 6130277Abstract: Provided are a rubber composition improved in an anti-static property and a pneumatic tire using the same for its tread part, wherein the rubber composition comprises natural rubber and/or diene base synthetic rubber and a white filler as a filler, and further comprises an anionic anti-static agent or a polyoxyalkylene glycol compound represented by the flowing formulas (I), (II) or (III): ##STR1## wherein R.sup.1 and R.sup.3 each represent a linear or branched, saturated or unsaturated aliphatic hydrocarbon group having 1 to 21 carbon atoms, or an aryl group; R.sup.4 and R.sup.5 each represent a hydrogen atom, a linear or branched, saturated or unsaturated aliphatic hydrocarbon group having 1 to 21 carbon atoms, or an aryl group; R.sup.1 and R.sup.3 in the above formula (I), R.sup.4 and R.sup.3 in the above formula (II) and R.sup.4 and R.sup.5 in the above formula (III) in one same molecule may be the same as or different from each other; R.sup.Type: GrantFiled: March 24, 1998Date of Patent: October 10, 2000Assignee: Bridgestone CorporationInventors: Nobuyuki Okamura, Masaaki Tsuchihashi, Isao Nishi
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Patent number: 6008304Abstract: An additive for masticating natural rubber comprising at least one compound selected from the group consisting of benzoic acids, naphthoic acids, dicarboxylic acids and compounds represented by Formula (IV): ##STR1## wherein m and n each represent an integer of 1 to 3; p represents an integer of 1 to 4; m+n+p=6; X is O, NR.sup.8 or (R.sup.9 O).sub.q ; R.sup.6 is a C.sub.1 .about.C.sub.24 alkyl, a C.sub.2 .about.C.sub.24 alkenyl, or a C.sub.6 .about.C.sub.24 aryl group; and R.sup.7 is H, OH, an alkyl, alkenyl or aryl group; R.sup.8 is H or a C.sub.1 .about.C.sub.24 alkyl group; R.sup.9 is a C.sub.1 .about.C.sub.4 alkyl group; q is an integer of 1 to 5, a mastication method and a natural rubber composition each of which uses the additive, and a pneumatic tire using the natural rubber composition.Type: GrantFiled: March 24, 1998Date of Patent: December 28, 1999Assignees: Bridgestone Corporation, KAO CorporationInventors: Daisuke Nohara, Masaaki Tsuchihashi, Isao Nishi
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Patent number: 5879589Abstract: The present invention provides a process for the antistatic treatment of a resin which comprises dispersing the following organically-modified layer silicate in a synthetic resin in the state that the following specific state is attained. A novel resin composition is provided, comprising an organically-modified layer silicate compound having a specific volume resistivity of not more than 1.times.10.sup.13 .OMEGA..multidot.cm dispersed in a synthetic resin in a proportion of from 2 to 30 parts by weight based on 100 parts by weight of said synthetic resin in the state that (1) a primary aggregate and/or a secondary aggregate having a short axis length of not more than 500 nm is formed and (2) the average minimum interparticle distance is not more than 500 nm.Type: GrantFiled: January 31, 1997Date of Patent: March 9, 1999Assignee: Kao CorporationInventors: Seiichi Miyanaga, Yasuhiro Doi, Kenichi Nishimura, Isao Nishi, Yuzo Sumida
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Patent number: 5500322Abstract: A developer additive selected from the group consisting of compounds represented by the general formulas (1) to (5): ##STR1## a toner composition having excellent fixing properties and improved pulverizability which comprises the developer additive, a binder resin and a colorant and a developer composition having excellent toner-fixing properties which comprises the developer additive, a binder resin and a colorant.Type: GrantFiled: November 10, 1994Date of Patent: March 19, 1996Assignee: Kao CorporationInventors: Shingo Tanaka, Tetsuya Ueno, Akito Itoi, Isao Nishi
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Patent number: 5439961Abstract: A process for producing a polyester film having a high strength and a high modulus of elasticity, which includes preparing a polyester resin composition comprising, adding to a polyester resin, 0.1 to 10 parts by weight, based on 100 parts by weight of the polyester resin, of an additive compound selected from the group consisting of compounds represented by the general formula (I): ##STR1## and compounds represented by the following general formula (II): ##STR2## and subjecting the resin composition to monoaxial or biaxial stretching.Type: GrantFiled: July 7, 1993Date of Patent: August 8, 1995Assignee: Kao CorporationInventors: Akito Itoi, Akira Takenaka, Isao Nishi
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Patent number: 5340521Abstract: A new melt viscosity depressant for a polyester resin having a structure of an aromatic carbonyl compound is disclosed.Addition of the melt viscosity depressant to a polyester resin reduces the melt viscosity of the resin remarkably, thereby facilitating mold processing and melt-spinning of the polyester resin composition, from which high strength polyester molding products and polyester fibers can be obtained.Type: GrantFiled: July 23, 1992Date of Patent: August 23, 1994Assignee: Kao CorporationInventors: Akito Itoi, Isao Nishi, Yasuo Ishii
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Patent number: 5178950Abstract: A cationic dye-dyeable polyester resin composition comprising a cationic dye-dyeable polyester resin and a melt viscosity depressant.Addition of the melt viscosity depressant to the cationic dye-dyeable polyester resin reduces the melt viscosity of the resin without decreasing the intrinsic viscosity thereby making the resin melt-spinnable. A cationic dye-dyeable polyester fiber with high strength can be obtained from the polyester resin composition.Type: GrantFiled: March 13, 1992Date of Patent: January 12, 1993Assignee: Kao CorporationInventors: Akito Itoi, Isao Nishi, Yasuo Ishii, Toshio Sato
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Patent number: 4317186Abstract: A device for determining the position of a sound source includes a plurality of sensors disposed on an object for which the sound source is to be detected and organized in the form of a matrix with N rows and M columns. The sensors are connected in parallel through respective uni-directional transmission elements with a common terminal for each row and each column. A signal processing circuit amplifies and carries out a designated output waveform generation process on detected signals produced by the sensors.Type: GrantFiled: November 28, 1979Date of Patent: February 23, 1982Assignee: Nihon Etl Kabushiki KaishaInventors: Isao Nishi, Hiroyasu Nakasa