Patents by Inventor Takashi Iwaki
Takashi Iwaki 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: 5088452Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: December 12, 1990Date of Patent: February 18, 1992Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Kunitoshi Watanabe, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu, Mamoru Takeda
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Patent number: 5082048Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: December 12, 1990Date of Patent: January 21, 1992Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu
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Patent number: 5076961Abstract: A mesomorphic compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2 respectively denote a linear or branched alkyl group having 1-18 carbon atoms capable of including one or two or more non-neighboring methylene groups which can be replaced with at least one species of --Z--, ##STR2## --CH.dbd.CH-- and --C.tbd.C--, wherein Z denotes --O-- or --S-- and R.sup.3 denotes hydrogen or an alkyl group having 1-5 carbon atoms; A.sup.1 denotes ##STR3## and A.sup.2 denotes any one of ##STR4## The mesomorphic compound is effective for providing a ferroelectric liquid crystal composition showing an improved low-temperature operation characteristic and a decreased temperature-dependence of response speed.Type: GrantFiled: July 6, 1990Date of Patent: December 31, 1991Assignee: Canon Kabushiki KaishaInventors: Shinichi Nakamura, Takao Takiguchi, Takashi Iwaki, Takeshi Togano, Yoko Yamada, Shosei Mori
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Patent number: 5075030Abstract: A liquid crystal composition, comprising: at least one compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 respectively denote an optically inactive linear or branched alkyl group having 1-18 carbon atoms capable of including one or non-neighboring two or more methylene groups which can be replaced with at least one species of ##STR2## wherein Z denotes --O-- or --S-- and R.sub.3 denotes hydrogen or an alkyl group having 1-5 carbon atoms; A denotes --A.sub.1 -- or --A.sub.2 --A.sub.3 -- wherein A.sub.1 denotes ##STR3## and A.sub.2 and A.sub.3 respectively denote ##STR4## or --A.sub.1 --; and at least one compound represented by the following formula (II): ##STR5## wherein R.sub.4 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of having a substituent; X.sub.1 denotes a single bond, --O--, ##STR6## X.sub.2 denotes a single bond, --O-- or ##STR7## Z.sub.1 denotes a single bond or ##STR8## A.sub.4 denotes ##STR9## and l is 1-12.Type: GrantFiled: July 27, 1990Date of Patent: December 24, 1991Assignee: Canon Kabushiki KaishaInventors: Takeshi Togano, Takao Takiguchi, Takashi Iwaki, Yoko Yamada, Shinichi Nakamura, Shosei Mori
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Patent number: 5067447Abstract: A hydrogen engine system comprises an engine, a metal hydride container connected with the engine and providing the engine with hydrogen, a heat intermedium providing mechanism connected with the hydrogen occluding alloy container and providing the metal hydride container with heat intermedium, a first control mechanism connected with the heat intermedium providing mechanism and controlling the heat intermedium providing mechanism so that the temperature of the heat intermedium supplied to the metal hydride container be kept at a constant value, and a second control mechanism connected with the heat intermedium providing mechanism between the first control mechanism and the metal hydride container and controlling the amount of the heat intermedium supplied from the heat intermedium providing mechanism to the metal hydride container.Type: GrantFiled: December 12, 1990Date of Patent: November 26, 1991Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Nippon Steel CorporationInventors: Takashi Iwaki, Kazunori Itou, Hiroshi Matsumoto, Kunitoshi Watanabe, Hiroyuki Suzuki, Juzo Shibata, Nobuyuki Uematsu, Mamoru Takeda
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Patent number: 5048004Abstract: A recording and reproducing device providing control data recording area on erasable type optical recording medium wherein control data are recorded thereof, characterized in that there is provided a control data recording area forming device for forming control data recording areas having more than two control recording blocks which in turn have more than one recording unit. The control data can be recorded independently. A control data updating device records new control data in the control data recording blocks which were the ones not previously being updated with control data, thereby allowing this device to minimize damage caused by electrical power failure.Type: GrantFiled: April 19, 1989Date of Patent: September 10, 1991Assignee: Sharp Kabushiki KaishaInventors: Toshihisa Deguchi, Takeshi Yamaguchi, Shigemi Maeda, Takashi Iwaki, Tsuneo Fujiwara, Shigeo Terashima
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Patent number: 5034151Abstract: There is disclosed a mesomorphic compound represented by the following formula (I): ##STR1## wherein A.sub.1 denotes a single bond, ##STR2## denotes ##STR3## X denotes hydrogen, a halogen or cyano group; Y denotes oxygen or sulfur; R.sub.1 and R.sub.2 respectively denotes a linear or branched alkyl, alkoxy, alkylcarbonyloxy, alkoxycarbonyl or alkoxycarbonyloxy group each having 1-18 carbon atoms and each capable of having a substituted of chloro, bromo, cyano, alkoxy or akoxycarbonyl group; and B denotes ##STR4## A ferroelectric liquid crystal composition comprises at least two mesomorphic compounds including at least one mesomorphic compound represented by the formula (I). A ferroelectric liquid crystal device is constituted by disposing the ferroelectric liquid crystal composition between a pair of substrates.Type: GrantFiled: March 27, 1989Date of Patent: July 23, 1991Assignee: Canon Kabushiki KaishaInventors: Kenji Shinjo, Akio Yoshida, Takashi Iwaki, Takao Takiguchi, Hiroyuki Kitayama, Kazuharu Katagiri
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Patent number: 5010540Abstract: An apparatus for recording and reproducing information on and from an optical disk includes a first control for producing a first control signal for controlling the rotational speed of a rotational driving apparatus, on the basis of the detected radial position; a judging apparatus which judges whether or not the reproduced signals are reproduced from a recorded region of the optical disk; a second control for producing a second control signal for controlling the rotational speed of the rotational driving apparatus, on the basis of the signals reproduced from the disk; and a switch apparatus which switches the circuit so that the rotational driving apparatus is controlled by the first control signal when the reproduced signals are not reproduced from a non-recorded region, and controlled by the second control signal when the reproduced signals are reproduced from a recorded region.Type: GrantFiled: July 29, 1988Date of Patent: April 23, 1991Assignee: Sharp Kabushiki KaishaInventors: Hiroshi Fuji, Tsuneo Fujiwara, Takashi Iwaki, Tomiyuki Numata, Kentaroh Tsuji, Shigemi Maeda, Takeshi Yamaguchi, Kunio Kojima, Toshihisa Deguchi, Shigeo Terashima
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Patent number: 5008888Abstract: A semiconductor laser driving apparatus for supplying a driving current to a semiconductor laser device of an optical disk recording and reproducing system, the level of which is changed to adjust the optical output of the laser device to one of plural levels corresponding to positions of an optical disk which is irradiated by a laser beam emitted from the laser device.Type: GrantFiled: July 21, 1989Date of Patent: April 16, 1991Assignee: Sharp Kabushiki KaishaInventors: Tomiyuki Numata, Takashi Iwaki, Kunio Kojima, Toshihisa DeGuchi
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Patent number: 4935915Abstract: A beam controller for controlling a semiconductor laser provided in an optical recording/playback apparatus includes first and second current sources for driving the semiconductor laser at a low level (play-back mode) and/or at a high level (recording or erasing mode). The first and second current sources are controlled to have stable power automatically by a first and second auto-power circuits, respectively. The first and second auto-power control circuits include a sample-hold circuit which stores an output signal from a low-pass filter. This enables the beam controller to avoid the transition response problems of the low-pass filter. A switching circuit is also included to select either the stored low-pass filter signal on the present low-pass filter signal.Type: GrantFiled: March 16, 1989Date of Patent: June 19, 1990Assignee: Sharp Kabushiki KaishaInventors: Tetsuo Fujiwara, Hiroshi Fuji, Takashi Iwaki, Toshihisa Deguchi, Shozou Kobayashi
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Patent number: 4917821Abstract: An optically active mesomorphic compound represented by the formula: ##STR1## wherein R.sub.1 denotes an alkyl group having 1-16 carbon atoms; R.sub.2 denotes an alkyl group having 1-18 carbon atoms; C* is an asymmetric carbon atom; X is an oxygen atom or sulfur atom; and n is 0 or 1. The optically active mesomorphic compound, when included as a component, provides a ferro-electric liquid crystal composition showing an improved field response characteristic.Type: GrantFiled: November 7, 1988Date of Patent: April 17, 1990Assignee: Canon Kabushiki KaishaInventors: Shosei Mori, Kenji Shinjo, Takashi Iwaki
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Patent number: 4904410Abstract: An optically active mesomorphic compound is represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are respectively an alkyl group having 1 to 16 carbon atoms, and C* denotes an asymmetric carbon atom. The mesomorphic compound has a fluorine atom directly connected to the asymmetric carbon atom and is effectively used as a liquid crystal component providing an increased spontaneous polarization and an improved responsiveness.Type: GrantFiled: March 28, 1988Date of Patent: February 27, 1990Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Nohira, Masanao Kamei, Shinichi Nakamura, Takashi Iwaki, Kazuharu Katagiri, Yoko Yamada
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Patent number: 4843604Abstract: A beam controller for controlling a semiconductor laser included in an optical recording-play-back apparatus. The beam controller is comprised of first and second current sources for driving the semiconductor laser at a low level during a play-back mode and at a high level during an erasing mode. The first and second current sources are respectively automatically controlled by a first and second auto-power control circuit to provide stable power outputs.Type: GrantFiled: October 16, 1986Date of Patent: June 27, 1989Assignee: Sharp Kabushiki KaishaInventors: Tetsuo Fujiwara, Hiroshi Fuji, Takashi Iwaki, Toshihisa Deguchi, Shozou Kobayashi
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Patent number: 4785252Abstract: A waveform processing circuit includes a switching circuit having first and second inputs and one output. The first input receives head portions and data portions contained in a reproduced signal from an optical head. The second input receives a level signal representing the level of the head portion or the level of the signal carrying the head portion. The switching circuit is switches between a first state in which the first input and the output are connected, and a second state in which the second input and the output are connected. A control signal producer produces a first control pulse indicating the presence of the data portion. The first control pulse is applied to the switching circuit for actuating the switching circuit to establish the first state when the first control pulse is present, and to establish the second state when the first control pulse is not present, so that the switching circuit continuously produces the signal having a level within the range of the head portion.Type: GrantFiled: October 8, 1986Date of Patent: November 15, 1988Assignee: Sharp Kabushiki KaishaInventors: Hiroshi Fuji, Takashi Iwaki, Tsuneo Fujiwara, Toshihisa Deguchi, Shozou Kobayashi
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Patent number: 4676331Abstract: A torque detecting apparatus for an electrical power steering system, having a steering wheel, a first steering shaft connected to the steering wheel, a second steering shaft connected to a vehicle wheel to be steered, an electric motor connected to the second steering shaft, and a controller for operating the motor to produce a driving force corresponding to a torque detected by the torque detecting apparatus.Type: GrantFiled: December 6, 1985Date of Patent: June 30, 1987Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Takashi Iwaki, Takashi Hayashi
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Patent number: 4410724Abstract: There is provided a process for production of o-(2,6-dichloroanilino)phenylacetic acid or a salt thereof by reacting o-chlorophenylacetic acid or an alkali metal salt thereof with 2,6-dichloroaniline in the presence of a base and at least 0.5 mol of a copper catalyst per mol of o-chlorophenylacetic acid in a polar solvent.Type: GrantFiled: October 16, 1981Date of Patent: October 18, 1983Assignee: Zenyaku Kogyo Kabushiki KaishaInventors: Muneaki Takase, Tadahiro Nakamura, Kazuo Kamiya, Toshiyuki Takezawa, Hiroaki Yamazaki, Takashi Iwaki
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Patent number: 4400929Abstract: An arrangement for forming a box-shaped covering body using a single flat covering metal sheet by placing the covering sheet over the top surface of the article being covered; pressing the covering flat sheet immovably on the article or product being covered by means of holding members; bending the left and right side portions of the flat covering sheet downward by means of lateral-portion bending members, thereby forming lateral cover portions on the left and right side wall faces of the product being covered; folding the front and rear ends of the lateral cover portions toward the front and rear end faces of the product being covered by means of corner folding members, thereby forming front and rear corner folds at respective corners of the product being covered; bending down the front and rear end portions of the flat covering sheet by means of end-portion bending members, thereby forming front and rear end-face cover portions in conformity with the contours of the front and rear end wall faces of the prodType: GrantFiled: February 17, 1981Date of Patent: August 30, 1983Assignee: Yuwa Sangyo Kabushiki KaishaInventors: Takashi Iwaki, Takeji Tanaka
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Patent number: 4305340Abstract: A safe box-like structure of good appearance is formed in a simplified manner from a flat metal sheet by folding at right angles the opposite side portions of a flat rectangular metal sheet, for instance, of a steel sheet to provide a channel-shaped metal sheet, forming in each end portion of the upright side sections of the channel-shaped metal sheet a diagonal crease extending from an inner end of a prescribed vertical fold line disposed substantially perpendicular to the bottom section of the bottom section of the channel-shaped metal sheet to the outer corner point of the end portion of the side section, pressing a triangular intermediate section between the prescribed vertical fold line and the diagonal crease inwardly of the channel-shaped metal sheet, folding the triangular intermediate section and an outer triangular section toward each other along the afore-mentioned prescribed vertical fold line and diagonal crease, and upbending opposite end portions of the channel-shaped metal sheet at right angleType: GrantFiled: March 3, 1980Date of Patent: December 15, 1981Assignee: Yuwa Sangyo Kabushiki KaishaInventors: Takashi Iwaki, Takeji Tanaka, Yoshitomo Tanaka, Hiroshi Tanaka
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Patent number: 4230058Abstract: A safe box-like structure of good appearance is formed in a simplified manner from a flat metal sheet by folding at right angles the opposite side portions of a flat rectangular metal sheet, for instance, of a steel sheet to provide a channel-shaped metal sheet, forming in each end portion of the upright side sections of the channel-shaped metal sheet a diagonal crease extending from an inner end of a prescribed vertical fold line disposed substantially perpendicular to the bottom section of the bottom section of the channel-shaped metal sheet to the outer corner point of the end portion of the side section, pressing a triangular intermediate section between the prescribed vertical fold line and the diagonal crease inwardly of the channel-shaped metal sheet, folding the triangular intermediate section and an outer triangular section toward each other along the afore-mentioned prescribed vertical fold line and diagonal crease, and upbending opposite end portions of the channel-shaped metal sheet at right angleType: GrantFiled: February 21, 1979Date of Patent: October 28, 1980Assignee: Yuwa-Sangyo Kabushiki-KaishaInventors: Takashi Iwaki, Takeji Tanaka, Yoshitomo Tanaka, Hiroshi Tanaka