Patents by Inventor Takeshi Itoi
Takeshi Itoi 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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Publication number: 20080143935Abstract: A color filter comprising a substrate, a red pixel, green pixel and blue pixel, each being disposed on the substrate, wherein a perpendicular optical retardation RRth of the red pixel, a perpendicular optical retardation GRth of the green pixel, and a perpendicular optical retardation BRth of the blue pixel satisfy the following formulas (1) and (2): |(RRth?BRth)|?|(GRth?BRth)|?0 ??(1) |(RRth?BRth)|?|(RRth?GRth)|?0 ??(2) wherein RRth, GRth and BRth represent, respectively, a product of a thickness [nm] of a pixel and a value obtained by subtracting a value of thickness-wise refractive index from an average value of an in-plane refractive index of each of these pixels.Type: ApplicationFiled: December 19, 2007Publication date: June 19, 2008Applicant: TOPPAN PRINTING CO., LTD.Inventors: Sosuke Akao, Koichi Minato, Satoshi Ohkuma, Yoshinori Nagasaki, Takeshi Itoi, Mitsuhisa Hatashima
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Patent number: 7361709Abstract: A colored composition contains a colorant carrier including a transparent resin, a precursor thereof, or a mixture of the transparent resin and the precursor, a colorant, and an organic liquid medium. The organic liquid medium consists of an organic solvent (a) having a boiling point at 760 mmHg of 100° C. or higher but lower than 160° C., and an organic solvent (b) having a boiling point at 760 mmHg of 160° C. or higher but lower than 215° C. The organic solvent (b) is contained in an amount of 3% to 35% by weight based on the total amount of the colored composition.Type: GrantFiled: May 20, 2004Date of Patent: April 22, 2008Assignees: Toyo Ink Mfg. Co., Ltd., Toppan Printing Co., Ltd.Inventors: Hideyo Tanaka, Takumi Saito, Takeshi Itoi, Mizuhiro Tani
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Publication number: 20080043180Abstract: A color filter adapted to be employed in an in-plane switching mode liquid crystal display device, which is incorporated in the liquid crystal device without interposing electrodes between a liquid crystal and pixels, and which includes a transparent substrate, and pixels having color layers representing a plurality of colors and formed on the transparent substrate, wherein a protective layer is not formed on the pixels, and a dielectric loss tangent (tan ?) of at least one color layer is confined to not higher than 0.03 at a frequency ranging from 10 Hz to 100 Hz.Type: ApplicationFiled: April 5, 2007Publication date: February 21, 2008Applicant: TOPPAN PRINTING CO., LTD.Inventors: Hidesato Hagiwara, Takeshi Itoi, Takumi Saito, Hiromitsu Ito
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Patent number: 7300608Abstract: A blue colored composition for a color filter contains a pigment carrier comprising a transparent resin, a precursor thereof or a mixture thereof, a blue pigment having a specific surface area of 90 to 140 m2/g, and a violet pigment having a specific surface area in a range of 100 to 150 m2/g, but having a greater specific surface area than that of the blue pigment used. A color filter includes a filter segment formed from the blue colored composition.Type: GrantFiled: December 16, 2004Date of Patent: November 27, 2007Assignees: Toyo Ink Mfg. Co., Ltd., Toppan Printing Co., Ltd.Inventors: Kenro Sunahara, Mayumi Ogura, Ichiro Toyoda, Takumi Saito, Hidesato Hagiwara, Takeshi Itoi, Hiromitsu Ito
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Patent number: 7288345Abstract: A photosensitive colored composition contains a resin, a monomer and a colorant. The resin is a copolymer resin of at least one compound (a) represented by general formula (I) below with at least one other compound (b) having an ethylenically unsaturated double bond: where R1 represents H or CH3, R2 represents an alkylene group having 2 or 3 carbon atoms, R3 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms which may contain a benzene ring, and n is an integer of 1 to 15.Type: GrantFiled: March 31, 2005Date of Patent: October 30, 2007Assignees: Toyo Ink Mfg. Co., Ltd., Toppan Printing Co., Ltd.Inventors: Yukiyoshi Jonoshita, Tadashi Tanoue, Takeshi Itoi, Mizuhiro Tani
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Publication number: 20070202272Abstract: A red-colored film in which when an elliptically polarized light is incident on the film in a direction 45° aslant from a normal line direction with respect to a surface of the film, a light transmitted through the film has an average amplitude transmittance ratio (av. tan ?) in a wavelength region of 575 to 635 nm, which satisfies the following equation (1): 0.960<av. tan ?<1.040 ??(1). A red-colored composition contains a red pigment A having a BET specific surface area in the range from 90 to 140 m2/g, a red pigment B having a BET specific surface area in the range from 70 to 85 m2/g, and a pigment carrier formed of a transparent resin, a precursor of the transparent resin or a mixture of the tarns parent resin and precursor thereof. A color filter has the red-colored film as a red color filter segment. The liquid crystal display device includes the color filter.Type: ApplicationFiled: June 29, 2006Publication date: August 30, 2007Applicants: TOYO INK CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Masayuki Yamamoto, Akira Hirano, Hideyo Tanaka, Yusuke Iida, Satoshi Ohkuma, Koichi Minato, Takeshi Itoi, Hidesato Hagiwara
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Patent number: 7220534Abstract: A photosensitive composition contains a photosensitive resin and a colorant. The photosensitive resin includes (A) a copolymer of (a1) at least one first polymerizable monomer containing 2 to 6 hydroxyl groups with (a2) at least one second polymerizable monomer other than the first polymerizable monomer, and (B) at least one compound (B) containing an ethylenically unsaturated double bond and a functional group capable of reacting with hydroxyl group. The compound (B) has been reacted with the copolymer (A). A color filter has at least one filter segment formed using the photosensitive composition.Type: GrantFiled: November 24, 2004Date of Patent: May 22, 2007Assignees: Toyo Ink Mfg. Co., Ltd., Toppan Printing Co., Ltd.Inventors: Fumiko Ikegami, Mie Shimizu, Takeshi Itoi
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Publication number: 20060222969Abstract: A photosensitive colored composition contains a resin, a monomer and a colorant. The resin is a copolymer resin of at least one compound (a) represented by general formula (I) below with at least one other compound (b) having an ethylenically unsaturated double bond: where R1 represents H or CH3, R2 represents an alkylene group having 2 or 3 carbon atoms, R3 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms which may contain a benzene ring, and n is an integer of 1 to 15.Type: ApplicationFiled: March 31, 2005Publication date: October 5, 2006Applicants: TOYO INK MFG. CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Yukiyoshi Jonoshita, Tadashi Tanoue, Takeshi Itoi, Mizuhiro Tani
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Publication number: 20050219443Abstract: A color filter is provided with red, green and blue color filter segments. When chromaticity coordinates (x, y) in a chromaticity diagram of XYZ color specification system are measured with the color filter being sandwiched between two polarizers, a chromaticity (xp, yp) of parallel-transmitted light and a chromaticity (xc, yc) of orthogonal-transmitted light satisfy the following formula (1): ?xy=[(xp?xc)2+(yp?yc)2]1/2<0.130??(1) A liquid crystal display device is provided with such a color filter.Type: ApplicationFiled: March 31, 2005Publication date: October 6, 2005Applicants: TOYO INK MFG. CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Hideyo Tanaka, Hidesato Hagiwara, Takeshi Itoi, Takumi Saito, Koichi Minato
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Publication number: 20050215675Abstract: A colored composition for color filter contains a pigment carrier made of a transparent resin, a precursor thereof, or a mixture thereof, an organic pigment, and a pigment-dispersing agent comprising a quinoline derivative represented by the following General formula (1) or (2), or an amine or metal salt thereof, and a color filter comprises filter segments formed with the color composition: where X represent a halogen atom selected from chlorine, bromine and iodine; n and m each independently represent the number of halogen atoms X, and are each an integer of 0 to 4.Type: ApplicationFiled: February 22, 2005Publication date: September 29, 2005Applicant: TOPPAN PRINTING CO., LTD.Inventors: Atsushi Nishida, Toru Omura, Takashi Yamauchi, Takeshi Itoi
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Publication number: 20050131114Abstract: A blue colored composition for a color filter contains a pigment carrier comprising a transparent resin, a precursor thereof or a mixture thereof, a blue pigment having a specific surface area of 90 to 140 m2/g, and a violet pigment having a specific surface area in a range of 100 to 150 m2/g, but having a greater specific surface area than that of the blue pigment used. A color filter includes a filter segment formed from the blue colored composition.Type: ApplicationFiled: December 16, 2004Publication date: June 16, 2005Applicants: TOYO INK MFG. CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Kenro Sunahara, Mayumi Ogura, Ichiro Toyoda, Takumi Saito, Hidesato Hagiwara, Takeshi Itoi, Hiromitsu Ito
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Publication number: 20050112501Abstract: A photosensitive composition contains a photosensitive resin and a colorant. The photosensitive resin includes (A) a copolymer of (a1) at least one first polymerizable monomer containing 2 to 6 hydroxyl groups with (a2) at least one second polymerizable monomer other than the first polymerizable monomer, and (B) at least one compound (B) containing an ethylenically unsaturated double bond and a functional group capable of reacting with hydroxyl group. The compound (B) has been reacted with the copolymer (A). A color filter has at least one filter segment formed using the photosensitive composition.Type: ApplicationFiled: November 24, 2004Publication date: May 26, 2005Applicants: TOYO INK MFG. CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Fumiko Ikegami, Mie Shimizu, Takeshi Itoi
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Publication number: 20040236006Abstract: A colored composition contains a colorant carrier including a transparent resin, a precursor thereof, or a mixture of the transparent resin and the precursor, a colorant, and an organic liquid medium. The organic liquid medium consists of an organic solvent (a) having a boiling point at 760 mmHg of 100° C. or higher but lower than 160° C., and an organic solvent (b) having a boiling point at 760 mmHg of 160° C. or higher but lower than 215° C. The organic solvent (b) is contained in an amount of 3% to 35% by weight based on the total amount of the colored composition.Type: ApplicationFiled: May 20, 2004Publication date: November 25, 2004Applicants: TOYO INK MFG. CO., LTD., TOPPAN PRINTING CO., LTD.Inventors: Hideyo Tanaka, Takumi Saito, Takeshi Itoi, Mizuhiro Tani
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Patent number: 6339288Abstract: A substrate for an organic electroluminescence display element comprises a support (11), a plurality of first electrode lines (12) arranged apart from each other on the support (11), and a plurality of partition walls (13) arranged apart from each other and extending in a direction to cross the first electrode lines (12). Each of the partition walls (13) has eaves in an upper portion and flared side surfaces in a lower portion.Type: GrantFiled: October 22, 1999Date of Patent: January 15, 2002Assignee: Toppan Printing Co., Ltd.Inventors: Yifan Qian, Mamoru Ishizaki, Takeshi Itoi, Mizuhiro Tani, Takao Minato, Yuichi Ito, Teruhiko Kai
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Patent number: 5897606Abstract: In a method for storing vibration waveform data sequentially detected by a vibration sensor. The vibration storing method includes detection of a reference level terminal point (P.sub.3) between a preestablished reference level and a vibration waveform. The detected reference level terminal point serves as a trigger. Also, vibration waveform data from a predetermined point (P.sub.0) before a reference level starting point (P.sub.1) to a predetermined point (P.sub.4) after the reference level terminal point (P.sub.3) are stored in a memory. A first preliminary memory and a second preliminary memory are utilized so that the vibration waveform data from those two memories are alternately transferred and stored.Type: GrantFiled: December 14, 1995Date of Patent: April 27, 1999Assignee: Yamaichi Electronics Co., Ltd.Inventors: Shinsuke Miura, Takeshi Itoi, Shuichi Yabushita
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Patent number: 5701257Abstract: A shock measuring method for detects shocks during transportation by a sensor and stores such detected shock data. The shock measuring method in goods transportation being characterized in that measuring conditions 1, 2, . . . n whose sequential order is pre-established are progressively fed in accordance with the sequential order for each transportation section, and shock data for each transportation section measured under each measuring condition 1, 2, . . . n for each transportation section are stored in accordance with the sequential order.Type: GrantFiled: January 2, 1996Date of Patent: December 23, 1997Assignee: Yamaichi Electronics Co., Ltd.Inventors: Shinsuke Miura, Takeshi Itoi, Shuichi Yabushita