Patents Represented by Attorney, Agent or Law Firm David G. Colin
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Patent number: 6476786Abstract: There is provided a liquid crystal display device capable of displaying every frame an image that is not influenced by the previous frame at all by removing an afterimage attributed to a change in dielectric constant at the time of response of liquid crystals. A scanning line GL1 is made to have a voltage of +15 V so as to turn on first and third TFT elements 1 and 3 constructed of an n-type MOS transistor and turn off a second TFT element 2 constructed of a p-type MOS transistor. A signal voltage Vs is applied to a memory capacitance Cm via the first TFT element 1, charging the memory capacitance Cm up to the signal. voltage Vs. Simultaneously with this operation, electric charges of a pixel capacitance Cp are discharged via the third TFT element 3. The other scanning lines GL2, GL3, . . .Type: GrantFiled: June 15, 2000Date of Patent: November 5, 2002Assignee: Sharp Kabushiki KaishaInventor: Koichi Miyachi
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Patent number: 6413729Abstract: A gene coding for a peptidoglycan recognition peptide (PGRP) is cloned, a recombinant vector into which said gene is introduced is obtained, and a transformant transformed with said recombinant vector is cultivated, thereby producing the PGRP in large amounts at high purity.Type: GrantFiled: August 16, 1999Date of Patent: July 2, 2002Assignee: Wako Pure Chemical Industries, Inc.Inventors: Masaaki Ashida, Masanori Ochiai, Masakazu Tsuchiya
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Patent number: 6391821Abstract: An oxidation catalyst according to the present invention is prepared, for example, by heat processing a gold compound at 150° C. to 80° C., yielding ultrafine gold particles, which are then mixed with a palladium compound and a compound containing at least one element selected from the group consisting of alkaline metals and the elements of Groups IIA, IIIA, VIA, IIB, VB, and VIII of the Periodic Table. By an oxidation reaction between a benzyl compound such as p-xylene and a carboxylic acid such as acetic acid in the presence of oxygen and the oxidation catalyst prepared as above, a benzyl ester such as p-methylbenzyl acetate or p-xylylene diacetate can be produced. Consequently, it is possible to provide an oxidation catalyst suitable for use in industrially producing the foregoing benzyl esters, a method of preparing the foregoing oxidation catalyst, and a method of producing the foregoing benzyl esters efficiently and at low cost.Type: GrantFiled: June 16, 1999Date of Patent: May 21, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Yuuichi Satoh, Jun Tatsumi, Toshiya Iida, Toshio Hayashi
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Patent number: 6355336Abstract: The present invention relates to a multi-layer packaging film comprising an intermediate layer having at least one outer layer on both surfaces of the intermediate layer, and having the thickness of not more than 40 &mgr;m, said outer layer comprising a polyolefin resin, said intermediate layer comprising a polytetramethylene terephthalate resin obtained by copolymerizing polytetramethylene oxide glycol having a number-average molecular weight of 300 to 5,000 and having an intrinsic viscosity of 0.7 to 2.0, a melting point of 200 to 228° C. and a crystallization temperature of not higher than 180° C., and the thickness of said intermediate layer being 20 to 80% of the thickness of the multi-layer film.Type: GrantFiled: December 10, 1999Date of Patent: March 12, 2002Assignee: Mitsubishi, Engineering-Plastics CorporationInventors: Nobukatsu Wakabayashi, Ken Honma
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Patent number: 6330048Abstract: A liquid crystal display device is provided, in which a liquid crystal layer made of liquid crystal having negative dielectric anisotropy is provided in a gap between a pair of substrates each having an electrode, wall-shaped convex portions are provided so as to surround display pixels on at least one of the substrates, a homeotropic alignment film is provided on a surface of each of the substrates contacting the liquid crystal layer, liquid crystal molecules in the liquid crystal layer are aligned substantially in a direction perpendicular to the pair of substrates when a voltage is not applied, and the liquid crystal molecules are axially symmetrically aligned in each of the display pixels formed by opposing portions of the electrodes when a voltage is applied. In this device, the gap between the substrates is maintained by spacers dispersed on one of the substrates after the alignment film is formed, and the number of spacers in each of the display pixels is zero or one.Type: GrantFiled: August 19, 1999Date of Patent: December 11, 2001Assignee: Sharp Kabushiki KaishaInventors: Makoto Shiomi, Takako Adachi
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Inverter control method and inverter control device performing feedback control by suppressing delay
Patent number: 5668713Abstract: In a method of controlling an inverter for adjusting a periodic inverter output waveform to a desired periodic waveform, an error waveform pattern between an inverter output waveform of the present prescribed period and a desired periodic waveform generated in synchronization with the prescribed period is formed, and the error waveform pattern is added to an inverter driving waveform pattern in the last prescribed period, whereby an inverter driving waveform pattern is updated.Type: GrantFiled: October 11, 1996Date of Patent: September 16, 1997Assignee: Sharp Kabushiki KaishaInventors: Masaki Eguchi, Hirokazu Kodama, Tsukasa Takebayashi, Hirofumi Nakata -
Patent number: 5266433Abstract: A two-component developer for electrophotography includes a toner comprising toner particles and an external additive composed of a compound of imidazole series or an imidazole derivative. The external additive has a volume median particle size below that of the toner particles, or of 0.1 to 100 .mu.m. The amount of external additive is 0.001 to 5% by weight based on the weight of the toner particles. As a result, scattering of toner may be prevented and the formation of fog in the background may be reduced. In addition, the electrostatic charge characteristics of the toner may be improved and the electrostatic charge rises in a satisfactory manner.Type: GrantFiled: December 7, 1990Date of Patent: November 30, 1993Assignee: Sharp Kabushiki KaishaInventors: Toshihisa Ishida, Tadashi Nakamura, Nobuhiko Nakano, Kanshiro Okamoto, Takeaki Oouti, Shintaro Hatano