Patents by Inventor Satoshi Tanioka
Satoshi Tanioka 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: 8420770Abstract: An inkjet ink capable of forming a polyimide film having, for example, strong mechanical strength, is provided. The inkjet ink contains: a polyamic acid (A) having a weight-average molecular weight of 50,000-500,000; one or more of an amic acid compound (B1) and an amic acid compound (B2), in which the amic acid compound (B1) is prepared from a compound (a3) having two or more anhydride groups and a monoamine (a5), and the amic acid compound (B2) is prepared from a diamine (a4) and a compound (a6) having one anhydride group; and a solvent (C).Type: GrantFiled: October 22, 2008Date of Patent: April 16, 2013Assignee: JNC CorporationInventors: Tomotsugu Furuta, Satoshi Tanioka
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Publication number: 20090104414Abstract: An inkjet ink capable of forming a polyimide film having, for example, strong mechanical strength, is provided. The inkjet ink contains: a polyamic acid (A) having a weight-average molecular weight of 50,000-500,000; one or more of an amic acid compound (B1) and an amic acid compound (B2), in which the amic acid compound (B1) is prepared from a compound (a3) having two or more anhydride groups and a monoamine (a5), and the amic acid compound (B2) is prepared from a diamine (a4) and a compound (a6) having one anhydride group; and a solvent (C).Type: ApplicationFiled: October 22, 2008Publication date: April 23, 2009Applicant: CHISSO CORPORATIONInventors: TOMOTSUGU FURUTA, SATOSHI TANIOKA
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Patent number: 6949281Abstract: An object of the present invention is to provide a varnish composition which can achieve totally and with good balance the improvement in various properties including electrical properties such as residual charge, a voltage holding ratio and image sticking, a pre-tilt angle, coating property, alignment property, and so on, which are desired for a liquid crystal aligning film formed. The varnish composition comprises polymer ingredients containing polyamic acid B represented by formula (1), polyamic acid A represented by formula (2) having a side chain of not less than 3 carbon atoms and N-substituted polyamide represented by formula (3), and a solvent for dissolving the polymer ingredients. The varnish composition contains 0.Type: GrantFiled: June 26, 2000Date of Patent: September 27, 2005Assignee: Chisso CorporationInventors: Satoshi Tanioka, Kumiko Fukui, Shizuo Murata, Hiroshi Ono, Itsuo Shimizu
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Patent number: 6946169Abstract: The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).Type: GrantFiled: December 8, 1998Date of Patent: September 20, 2005Assignee: Chisso CorporationInventors: Satoshi Tanioka, Shizuo Murata, Itsuo Shimizu, Kazumi Ito
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Patent number: 6746730Abstract: A varnish composition which comprises a solvent and a polymer component comprising a polyamic acid (B) (having residues which are derived from tetracarboxylic acids and a diamine respectively and which are residues having no side chains or residues having a pendant C1-2 alkyl group or are residues having a composition comprising a mixture of these), a polyamic acid (A) (having residues which are derived from tetracarboxylic acids and a diamine respectively and at least either of which is a residue having a pendant C3+ alkyl group or is a residue having a composition containing that residue), and a soluble polyimide, and in which the proportion of the polyamic acid (A) to the soluble polyimide is 1/99 to 99/1 by weight, the, sum of the polyamic acid (A) and the soluble polyimide accounts for 1 to 80 wt. % of the polymer component, the polyamic acid (B) accounts for 99 to 20 wt. % of the polymer component, and the proportion of the polymer component in the whole varnish composition is 0.1 to 40 wt. %.Type: GrantFiled: December 28, 2001Date of Patent: June 8, 2004Assignee: Chisso CorporationInventors: Satoshi Tanioka, Kumiko Fukui, Shizuo Murata, Hiroshi Ono, Itsuo Shimizu
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Patent number: 6685997Abstract: Provided is a varnish composition which can achieve well-balanced electrical characteristics such as a residual charge, a voltage-holding ratio and image sticking and various characteristics such as a pretilt angle, a coating property and an aligning property, which are desired to a liquid crystal alignment film which is prepared therefrom. The above varnish composition comprises a polymer component comprising a polyamide acid represented by Formula (1), a polyamide represented by Formula (2) or the polyamide represented by Formula (2) and a soluble polyimide represented by Formula (3), and a solvent, wherein the above polymer component contains 1 to 60% by weight of the polyamide represented by Formula (2), and the above varnish composition contains 0.Type: GrantFiled: December 5, 2000Date of Patent: February 3, 2004Assignee: Chisso CorporationInventors: Shizuo Murata, Haruo Kato, Satoshi Tanioka, Kumiko Fukui, Hiroshi Ono, Itsuo Shimizu
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Patent number: 6623913Abstract: Disclosed is a method for producing liquid crystal display devices comprising a step for forming a transparent electrode and a circuit element of semiconductor on the surface of a pair of transparent substrates, and various steps for applying a photoresist, exposing to the light, etching, releasing the photoresist, inspecting the electrodes and circuit elements of semiconductor, forming an insulating film, forming an alignment film, rubbing the alignment film, spreading spacers, applying a sealing agent, fabricating a cell, filling a liquid crystal, pasting a polarizing plate, and connecting a driver IC characterized in that a soft X-ray is irradiated to the substrate in at least one step prior to the rubbing of the alignment films to produce liquid crystal display devices, at a high yield, in which devices number of pixel defect is small.Type: GrantFiled: September 28, 2001Date of Patent: September 23, 2003Assignees: Chisso Corporation, IInuma Gauge Manufacturing Company Limited, Hamamatsu Photonics Kabushiki KaishaInventors: Satoshi Tanioka, Shizuo Murata, Makoto Kono, Masayuki Hirano
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Patent number: 6620339Abstract: The present invention provides a polyimide alignment film having excellent electrical properties and excellent reliability for use in the field of electronic materials which comprises a polyimide resin produced from a polyamic acid composition comprising a polyamic acid forming a polyimide resin of a low residual voltage and a high voltage holding ratio, and a polyamic acid forming a polyimide resin of a large pre-tilt angle, blended them in the ratio of the former to the latter of 50/50 to 95/5 (weight ratio), a polyamic acid composition for providing such a polyimide aligning film and a liquid crystal display element produced from such an aligning film.Type: GrantFiled: June 19, 2000Date of Patent: September 16, 2003Assignee: Chisso CorporationInventors: Itsuo Shimizu, Kumiko Hara, Haruo Kato, Satoshi Tanioka, Shizuo Murata
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Patent number: 6476266Abstract: Provided is a diamino compound suitable for obtaining a polyimide which can form a liquid crystal alignment film capable of providing a liquid crystal display element, an intermediate therefor and a production process for the same. The above production process is characterized by reacting a cyclohexylbenzene derivative represented by Formula (3): with an acid halide represented by Formula (4): by the Frieldel-Crafts reaction to produce a cyclohexylphenylcarbonyl compound, and reducing the above compound after nitrating, whereby a compound represented by Formula (1) is obtained: (wherein A1 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; A2 represents a single bond or an alkylene group having 1 to 5 carbon atoms, and one or optional methylene groups which are not adjacent in the group may be substituted with an oxygen atom; X is Br or Cl; m represents an integer of 0 to 3, and n represents an integer of 1 to 5).Type: GrantFiled: December 23, 1999Date of Patent: November 5, 2002Assignee: Chisso CorporationInventors: Takahiro Mori, Toshiya Sawai, Shizuo Murata, Masaaki Yazawa, Satoshi Tanioka, Kumiko Hara
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Publication number: 20020018966Abstract: Disclosed is a method for producing liquid crystal display devices comprising a step for forming a transparent electrode and a circuit element of semiconductor on the surface of a pair of transparent substrates, and various steps for applying a photoresist, exposing to the light, etching, releasing the photoresist, inspecting the electrodes and circuit elements of semiconductor, forming an insulating film, forming an alignment film, rubbing the alignment film, spreading spacers, applying a sealing agent, fabricating a cell, filling a liquid crystal, pasting a polarizing plate, and connecting a driver IC characterized in that a soft X-ray is irradiated to the substrate in at least one step prior to the rubbing of the alignment films to produce liquid crystal display devices, at a high yield, in which devices number of pixel defect is small.Type: ApplicationFiled: September 28, 2001Publication date: February 14, 2002Inventors: Satoshi Tanioka, Shizuo Murata, Makoto Kono, Masayuki Hirano
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Patent number: 6322956Abstract: Disclosed is a method for producing liquid crystal display devices comprising a step for forming a transparent electrode and a circuit element of semiconductor on the surface of a pair of transparent substrates, and various steps for applying a photoresist, exposing to the light, etching, releasing the photoresist, inspecting the electrodes and circuit elements of semiconductor, forming an insulating film, forming an alignment film, rubbing the alignment film, spreading spacers, applying a sealing agent, fabricating a cell, filling a liquid crystal, pasting a polarizing plate, and connecting a driver IC characterized in that a soft X-ray is irradiated to the substrate in at least one step prior to the rubbing of the alignment films to produce liquid crystal display devices, at a high yield, in which devices number of pixel defect is small.Type: GrantFiled: April 20, 1999Date of Patent: November 27, 2001Assignees: Chisso Corporation, Iinoma Gauge Manufacturing Company Limited, Hamamatsu Photonics Kabushiki KaishaInventors: Satoshi Tanioka, Shizuo Murata, Makoto Kono, Masayuki Hirano
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Patent number: 6316574Abstract: The present invention provides a liquid crystal display element having an adequate pre-tilt angle for preventing the reverse domain, as well as excellent electrical properties by preparation of the polyamic acid composition for the liquid crystal display element which comprises a polyamic acid A that excels in electrical properties and a polyamic acid B that has side chains, mixed in the ratio A/B of 50/50 to 95/5 (by weight).Type: GrantFiled: June 19, 2000Date of Patent: November 13, 2001Assignee: Chisso CorporationInventors: Satoshi Tanioka, Shizuo Murata, Itsuo Shimizu, Kazumi Ito
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Patent number: 6084058Abstract: A composition for a polyimide type liquid crystal aligning film characterized in that a diamino compound constituting polyimide contains one, two or more diamine selected from 4,4'-diaminodiphenyl methane, 3,3'-dimethyl-4,4'-diaminodiphenyl methane, 2,2'-dimethyl-4,4'-diaminodiphenyl methane, 3,3',5,5'-tetramethyl-4,4'-diaminodiphenyl methane and 4,4'-ethylene di-meta-toluidine.Type: GrantFiled: September 11, 1998Date of Patent: July 4, 2000Assignee: Chisso CorporationInventors: Shizuo Murata, Toshiya Sawai, Satoshi Tanioka, Haruo Kato
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Patent number: 5798810Abstract: A method for treating an aligning film for a liquid crystal display element and a method for preparing a liquid crystal display element are proposed.The said treating method comprises rubbing a specified aligning film formed on a transparent substrate with a transparent electrode and thereafter radiating soft X-ray for 2 seconds or more in gas. The said preparing method comprises arranging a transparent electrode on a pair of transparent substrates, forming an aligning film consisting of an organic high molecular compound on the said transparent electrode, treating the said aligning film by a rubbing treatment, assembling the substrates face to face each other via a spacer, and then sealing a liquid crystal material.By a method for treating an aligning film according to the invention, it is possible to lower display unevenness of a liquid crystal display element and to improve an yield of product.Type: GrantFiled: October 28, 1996Date of Patent: August 25, 1998Assignees: Chisso Corporation, Iinuma Gauge Mfg. Co., Ltd., Hamamatsu Photonics K.K.Inventors: Satoshi Tanioka, Shizuo Murata, Makoto Kono, Masayuki Hirano
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Patent number: 5625475Abstract: A method for treating an aligning film for a liquid crystal display element wherein an aligning film consisting of an organic high molecular compound formed on a transparent substrate with a transarent electrode is subjected to a robbing treatment and thereafter said aligning film is irradiated with soft X-rays in a gas.A method for preparing a liquid crystal display element comprising the steps of arranging a transparent electrode on a pair of transparent substrates, forming an aligning film consisting of an organic high molecular compound on the said transparent electrode, treating said aligning film by a rubbing treatment, assembling the substrates to face each other with a spacer disposed therebetween, and then applying and sealing to a substrate a liquid crystal material wherein the aligning film is subjected to a robbing treatment and thereafter said aligning film is irradiated with soft X-rays in gas.Type: GrantFiled: April 26, 1995Date of Patent: April 29, 1997Assignees: Chisso Corporation, Iinuma Gauge Mfg. Co., ltd, Hamamatsu Photonics K.K.Inventors: Satoshi Tanioka, Shizuo Murata, Makoto Kono, Masayuki Hirano
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Patent number: 5579135Abstract: An optical element which comprises a liquid crystal dispersion film layer which is composed of a spongy matrix polymer and a liquid crystal such that they become separated at use temperatures and mixed at high temperatures. The mixture remains mixed upon quenching but gets phase separated upon slow cooling. The optical element produces an electro-optic effect and permits heat-mode recording.Type: GrantFiled: October 13, 1995Date of Patent: November 26, 1996Assignee: Chisso CorporationInventors: Tisato Kajiyama, Hirotsugu Kikuchi, Satoshi Tanioka
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Patent number: 4804561Abstract: A process for producing ferromagnetic metal fine particles having superior magnetic characteristics, particularly, high saturation magnetization, well-balanced coercive force, having prevented sintering of particles between one another and also having superior dispersibility each particle, superior dispersibility of magnetic paints and improved corrosion resistance is provided, which process comprises adhering a compound of a metal such as Ni, etc. onto the surface of iron .alpha.-oxyhydroxide particles in water, depositing a silicon compound and an aluminum compound onto the resulting particles in alkaline water, filtering off and drying the resulting iron .alpha.-oxyhydroxide, calcining the particles in a non-reducing gas atmosphere and reducing the particles on heating.Type: GrantFiled: October 9, 1987Date of Patent: February 14, 1989Assignee: Chisso CorporationInventors: Satoshi Tanioka, Yasuyuki Nishimoto, Yasuto Adachi