Patents by Inventor Shinji Hasegawa
Shinji Hasegawa 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: 6535264Abstract: A liquid crystal display device is capable of providing high-quality picture display by preventing luminance irregularity in a display screen due to the nonuniformity of a cell gap. The liquid crystal display device includes at least two or more kinds of color filters FIL formed over one of substrates, the color filters having different colors for displaying a color display, a black matrix interposed between each of the color filters, pixel-forming electrodes ITO2, an alignment control layer, a spacer SOC fixedly formed over at least one of the substrates with a height approximately equal to a desired gap between the substrates, and a bead interposed between the substrates and made of a resin material whose average grain size is slightly greater than the height of the spacer SOC.Type: GrantFiled: November 8, 2000Date of Patent: March 18, 2003Assignee: Hitachi, Ltd.Inventors: Makiko Imabayashi, Shinji Hasegawa, Yasushi Iwakabe
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Publication number: 20020005929Abstract: There is provided a liquid crystal display device in which the gap between its transparent substrates can be kept uniform irrespective of whether the temperature of the device is normal temperature or high temperature. The liquid crystal display device includes transparent substrates disposed in opposition to each other with a liquid crystal being interposed therebetween, and plural spacers secured to one of the transparent substrates so as to support the other transparent substrate. The plural spacers include first spacers and second spacers, and the first spacers are formed of a material whose elasticity is higher than that of the second spacers, and are larger in height than the second spacers.Type: ApplicationFiled: July 13, 2001Publication date: January 17, 2002Applicant: Hitachi, Ltd.Inventors: Makiko Imabayashi, Shinji Hasegawa, Yasushi Iwakabe
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Patent number: 6051307Abstract: A molded article comprising:(1) 70 to 99.5% by weight of a thermoplastic resin, and(2) 0.5 to 30% by weight of carbon fibers;wherein the carbon fiber comprises,(a) carbon fibers having a length of more than 1.5 mm being contained in an amount of 0.1 to 4.7% by weight,(b) carbon fibers having a length of 0.5 to 1.5 mm being contained in an amount of 0.2 to 10.7% by weight, and(c) carbon fibers having a length of less than 0.5 mm being contained in an amount of 0.2 to 14.6% by weight, wherein the weight % is based on the total amount of the thermoplastic resin and the carbon fibers.Type: GrantFiled: February 2, 1999Date of Patent: April 18, 2000Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Toshirou kido, Shinji Hasegawa
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Patent number: 5900614Abstract: A self-scanning checkout device includes a registration section having a stationary scanner for permitting a customer to input article information for a purchased article, a counter arranged on the downstream side from the registration section in the article moving direction, for receiving a purchased article which has been registered thereon, and a monitoring section for monitoring a movement of the purchased article. The monitoring section sets an article registration flag when information of the purchased article is read by the stationary scanner, checks the article registration flag when the passage of an article is detected by article sensors disposed near and on the downstream side from the reading position of the stationary scanner, resets the article registration flag when the article registration flag is detected to be set, and issues an alarm indicating the passage of an unregistered article when the article registration flag is detected to be reset.Type: GrantFiled: May 27, 1997Date of Patent: May 4, 1999Assignee: Kabushiki Kaisha TECInventors: Mikio Nakakawaji, Shinji Hasegawa, Kazuyuki Matsumura
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Patent number: 5418203Abstract: A fuel absorbent is provided in which polymer particles having a fuel absorbing ability are contained or dispersed in a binder matrix permeable to fuel. The fuel permeates the binder and is absorbed by the polymer particles. A process is provided for making the fuel absorbent by mixing polymer particles having fuel absorbing ability with a binder dissolved in a solvent, to thereby obtain a dispersion mixture having the polymer particles dispersed therein. The dispersion mixture is then dried to cause the polymer particles to be dispersed in a matrix of the binder. The fuel absorbent has excellent durability and fuel absorbing/desorbing ability.Type: GrantFiled: June 16, 1993Date of Patent: May 23, 1995Assignee: Toyoda Gosei Co., Ltd.Inventors: Masayoshi Ichikawa, Shinji Hasegawa, Hiroshi Ito, Takashi Ohta, Norio Sato, Akane Okada
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Patent number: 4908844Abstract: In order to detect a rise angle of a bed of an X-ray fluoroscopic imaging system, first and second potentiometers of the identical characteristic are respectively connected to a sprocket for rotating a sector gear to raise the bed and a tension roller which is rotated in synchronism with rotation of the sprocket through a chain. Outputs from the first and second potentiometers are input to a differential amplifier to calculate a difference therebetween. It is determined by a window comparator whether or not the difference falls within a predetermined allowable range. When the difference falls outside the predetermined allowable range, an error is detected. The outputs from the first and second potentiometers are input to minimum and maximum voltage detection comparators. It is checked whether or not the output itself from the potentiometer falls within a predetermined output range. If the output falls outside the predetermined output range, an error is detected.Type: GrantFiled: March 28, 1988Date of Patent: March 13, 1990Assignee: Kabushiki Kaisha ToshibaInventor: Shinji Hasegawa
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Patent number: 4888387Abstract: A resin composition comprising (A) a copolymer comprising hexagonal units selected from hexagonal acid anhydride units, hexagonal imide units and mixtures thereof, methyl methacrylate units, (meth)acrylic acid units and optionally aromatic vinyl compound units, (B) a graft copolymer rubber, and (C) at least one polymer selected from a polyamide and a polycarbonate, wherein the weight proportions of components (A), (B) and (C) relative to the total weight of components (A), (B) and (C) are in the ranges of from 5 to 50%, from 5 to 50% and from 45 to 80%, respectively. The resin composition has surprisingly improved impact strength not possessed by any of the individual component polymers of the resin composition, while maintaining advantageous properties, such as moldability, other mechanical strengths, rigidity, heat resistance, moisture resistance, chemical resistance and dimensional stability, attributed to the individual component polymers.Type: GrantFiled: March 8, 1989Date of Patent: December 19, 1989Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Akihiro Wada, Rin-ichi Kakuta, Kenji Ohuchi, Jun Sugiyama, Shinji Hasegawa
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Patent number: 4815825Abstract: A liquid crystal display device including a nematic liquid crystal composition having a twist angle of 160.degree. to 260.degree. of liquid crystal molecules and at least one compound of the formula: ##STR1## (m, n=1-7) further improved in time-multiplexability and display quality.Type: GrantFiled: December 17, 1986Date of Patent: March 28, 1989Assignee: Hitachi, Ltd.Inventors: Tamihito Nakagomi, Yasuhiko Kando, Shinji Hasegawa
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Patent number: 4759612Abstract: A liquid crystal display device comprises a liquid crystal layer sandwiched between upper and lower electrode substrates subjected to aligning treatment. The liquid crystal layer includes a nematic liquid crystal added with a chiral material and has a 160.degree.-360.degree. twisted helical structure. A pair of polarizers are disposed adjacent to the electrode substrates with their polarization or absorption axes inclined by respective predetermined angles with respect to the aligning directions of the electrode substrates. At least one of the polarizers is formed by a color polarizer for compensating a wavelength dependence of transmittance (or the coloring due to birefringence) resulting from the anti-coincidence between the polarization or absorption axis of the polarizer and the aligning direction of the electrode substrate, i.e. an optical axis of liquid crystal molecules adjacent to the substrate, so that light emerging from the device becomes approximately achromatic or colorless.Type: GrantFiled: July 23, 1986Date of Patent: July 26, 1988Assignee: Hitachi, Ltd.Inventors: Hideaki Nakatsuka, Mikio Kanazaki, Yasuhiko Kando, Toshihiko Tojo, Shinji Hasegawa
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Patent number: 4693562Abstract: A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 96.degree. and 108.degree. along a direction of thickness thereof, absorption axes of a pair of polarizing plates disposed on the upper and lower substrates constitute an angle between 63.degree. and 73.degree., and a product .DELTA.n.multidot.d of a thickness d (.mu.m) and an optical anisotropy .DELTA.n of a liquid crystal layer falls within a range from 0.69 .mu.m to 0.79 .mu.m.Type: GrantFiled: December 6, 1985Date of Patent: September 15, 1987Assignee: Hitachi, Ltd.Inventors: Shinji Hasegawa, Yasuhiko Kando, Tamihito Nakagomi
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Patent number: 4664482Abstract: A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 200.degree. and 260.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are angularly displaced by a predetermined angle or predetermined angles from major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively.Type: GrantFiled: March 12, 1986Date of Patent: May 12, 1987Assignee: Hitachi, Ltd.Inventors: Yasuhiko Kando, Tamihito Nakagomi, Shinji Hasegawa
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Patent number: 4653861Abstract: A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 160.degree. and 200.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are inclined by a predetermined angle with respect to major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively.Type: GrantFiled: August 27, 1984Date of Patent: March 31, 1987Assignee: Hitachi, Ltd.Inventors: Yasuhiko Kando, Tamihito Nakagomi, Shinji Hasegawa
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Patent number: 4653865Abstract: A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 140.degree. and 250.degree. along a direction of thickness thereof, and polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are angularly displaced by a predetermined angle or predetermined angles from major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively, and a ratio of thickness of the nematic liquid crystal to a natural molecular helical pitch of the nematic liquid crystal added with a chiral material falls within a range of from 0.14 to 0.60 inclusive.Type: GrantFiled: April 2, 1986Date of Patent: March 31, 1987Assignee: Hitachi, Ltd.Inventors: Yasuhiko Kando, Tamihito Nakagomi, Shinji Hasegawa, Yoshio Hanada
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Patent number: 4652088Abstract: A liquid crystal display device wherein a nematic liquid crystal having a positive dielectric anisotropy and added with a chiral material is sealed between a pair of upper and lower substrates so as to constitute a helical structure twisted within a range between 90.degree. and 160.degree. along a direction of thickness thereof, polarizing axes or absorption axes of a pair of polarizing plates disposed on the upper and lower substrates are inclined by a predetermined angle falling within a range between 25.degree. and 65.degree. with respect to major axes of liquid crystal molecules adjacent to the upper and lower substrates, respectively, and in the direction of the twist of the liquid crystal, and a product .DELTA.n.multidot.d of a thickness d (.mu.m) and an optical anisotropy .DELTA.n of a liquid crystal layer falls within a range from 0.8 .mu.m to 1.2 .mu.m.Type: GrantFiled: January 29, 1985Date of Patent: March 24, 1987Assignee: Hitachi, Ltd.Inventors: Yasuhiko Kando, Tamihito Nakagomi, Shinji Hasegawa
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Patent number: 4469618Abstract: A liquid crystal composition comprising, as the essential components, trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, trans-4-n-propyl-(4-cyanophenyl)-cyclohexane, trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, trans-4-n-pentyl-(4'-ethylbiphenyl-4)-cyclohexane and 4-(trans-4-n-pentylcyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl is drivable over a wide temperature range and can be operated rapidly at low temperatures.Type: GrantFiled: July 8, 1982Date of Patent: September 4, 1984Assignees: Hitachi, Ltd., Merck Patent GmbHInventors: Shinji Hasegawa, Kazuhisa Toriyama, Ludwig Pohl, Georg Weber
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Patent number: 4464283Abstract: A liquid crystal composition comprising trans-4-n-propyl-(4-ethylphenyl)-cyclohexane, trans-4-n-pentyl-(4-cyanophenyl)-cyclohexane, trans-4-n-pentyl-(4' -ethylbiphenyl-4)cyclohexane, trans-4-n-pentyl-(4'-cyanobiphenyl-4)-cyclohexane, 4-n-propylphenyl-4-(trans-4-n-propylcyclohexyl)benzoate, and 4-(trans-4-n-pentyl-cyclohexyl)-4'-(trans-4-n-propylcyclohexyl)-biphenyl is drivable over a wide temperature range and can be operated rapidly at low temperatures.Type: GrantFiled: July 8, 1982Date of Patent: August 7, 1984Assignees: Hitachi, Ltd., Merck Patent GmbHInventors: Shinji Hasegawa, Kazuhisa Toriyama, Ludwig Pohl, Georg Weber
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Patent number: 4293698Abstract: There is provided a compound for controlling dielectric constant of liquid crystal consisting of 4-p-Alkylbenzoyloxypyridine oxide represented by the general formula ##STR1## where R is a normal alkyl group having 1 to 9 carbon atoms.Type: GrantFiled: January 10, 1980Date of Patent: October 6, 1981Assignee: Hitachi, Ltd.Inventors: Kazuhisa Toriyama, Tsujiaki Hata, Shinji Hasegawa, Ken Sasaki