Patents by Inventor Takashi Yamanaka
Takashi Yamanaka 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: 5110956Abstract: A new benzodioxole derivative has a substituent in the phenyl ring which is a carboxyalkylthioalkyl or the like and is effective to treat a liver disease.Type: GrantFiled: April 23, 1990Date of Patent: May 5, 1992Assignee: Eisai Co., Ltd.Inventors: Yoshitake Ogata, Makoto Ikeda, Seiichiro Nomoto, Makoto Okita, Naoyuki Shimomura, Toshihiko Kaneko, Takashi Yamanaka, Ieharu Hishinuma, Junichi Nagakawa, Kazuo Hirota, Kaname Miyamoto, Toru Horie, Tsuneo Wakabayashi
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Patent number: 5075335Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m --, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.Type: GrantFiled: March 16, 1990Date of Patent: December 24, 1991Assignee: Eisai Co., Ltd.Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
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Patent number: 4999723Abstract: A magnetic recording and reproducing device wherein operation timings of various mechanisms can be set with a high degree of accuracy and construction for driving the individual mechanisms is simplified with a reduced number parts. The device comprises a single cam plate having cams for selectively operating a turning force transmission change-over mechanism, a tape loading mechanism, a pinch roller driving mechanism, a rotational speed change-over mechanism, a brake mechanism and a back tension mechanism. The cam plate is driven to rotate by a motor and transmits the turning force of the motor as a driving force to the mechanisms listed. The brake device is also improved in that slackening of a tape is not caused for a time after completion of a fast feeding mode or a rewinding mode until a reproducing mode or a recording mode is subsequently started.Type: GrantFiled: November 3, 1989Date of Patent: March 12, 1991Assignee: Tanashin Denki Co., Ltd.Inventor: Takashi Yamanaka
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Patent number: 4950701Abstract: A method for bonding two objects by means of the following two adhesives:(A) a moisture-inducible room temperature anion polymerization curing adhesive composed essentially of at least one anion polymerizable compound selected from the group consisting of an .alpha.-cyanoacrylate compound of the formula: ##STR1## wherein R is an alkyl group having from 1 to 16 carbon atoms, an alkoxyalkyl group having 2 to 16 carbon atoms, a haloalkyl group having from 1 to 16 carbon atoms, a cyanoalkyl group having from 2 to 16 carbon atoms, an aralkyl group having from 6 to 12 atoms, an acyloxyalkyl group having from 2 to 16 carbon atoms, a cycloalkyl group having from 3 to 16 carbon atoms, an alkenyl group having from 2 to 16 carbon atoms or an aryl group having from 6 to 12 carbon atoms, and a 1,1-disubstituted diene compound of the formula: ##STR2## wherein each of R.sup.1 and R.sup.Type: GrantFiled: August 8, 1988Date of Patent: August 21, 1990Assignee: Cemedine Company, Ltd.Inventors: Naomi Okamura, Hiroshi Aoki, Junzo Makino, Hajime Yagi, Yasuo Arai, Takashi Yamanaka
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Patent number: 4948808Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m--, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.Type: GrantFiled: July 28, 1988Date of Patent: August 14, 1990Assignee: Eisai Co., Ltd.Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
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Patent number: 4914536Abstract: A magnetic recording and reproducing device wherein operation timings of various mechanisms can be set with a high degree of accuracy and construction for driving the individual mechanisms is simplified with a reduced number parts. The device comprises a single cam plate having cams for selectively operating a turning force transmission change-over mechanism, a tape loading mechanism, a pinch roller driving mechanism, a rotational speed change-over mechanism, a brake mechanism and a back tension mechanism. The cam plate is driven to rotate by a motor and transmits the turning force of the motor as a driving force to the mechanisms listed. The brake device is also improved in that slackening of a tape is not caused for a time after completion of a fast feeding mode or a rewinding mode until a reproducing mode or a recording mode is subsequently started.Type: GrantFiled: December 2, 1987Date of Patent: April 3, 1990Assignee: Tanashin Denki Co., Ltd.Inventor: Takashi Yamanaka
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Patent number: 4827289Abstract: A thermal head for a printer in accordance with the present invention comprises: a substrate (11); a heater layer (12) on the substrate; lead wires (13a and 13b) formed on the heater layer for supplying electric power to the heater layer; and a single protective layer (20) for protecting the heater layer and the lead wires by covering them, the protective layer including an oxide or a nitride.Type: GrantFiled: June 23, 1988Date of Patent: May 2, 1989Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shiro Tsuji, Eizo Naya, Takashi Yamanaka, Yoshihiro Usui, Hiroshi Ito, Noriyuki Hasebe
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Patent number: 4801603Abstract: A guanidinobenzoic ester derivative having the formula is novel and effective to inhibit enzymes such as trypsin, plasmin and thrombin, being useful for treatment of the pancreatitis and hemorrhagic disease and thrombosis. ##STR1## wherein X represents a group of the formula: ##STR2## in which Y is a group of the formula: --(CH.sub.2).sub.m --, m being an integer of 2 or 3, ##STR3## or a group of the formula:--ORin which R is a hydrogen atom or a lower alkyl group, and n represents an integer of 1 to 5.Type: GrantFiled: December 24, 1986Date of Patent: January 31, 1989Assignee: Eisai Co., Ltd.Inventors: Shigeru Souda, Naoyuki Shimomura, Norihiro Ueda, Shuhei Miyazawa, Takashi Yamanaka, Kaname Miyamoto, Ieharu Hishinuma, Junichi Nagakawa, Naoko Nagaoka, Hidetoshi Kawashima, Tsutomu Kawata, Junsaku Nagaoka, Tsuneo Wakabayashi
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Patent number: 4793886Abstract: A method for bonding two objects by means of the following two adhesives:(A) a moisture-inducible room temperature anion polymerization curing adhesive composed essentially of at least one anion polymerizable compound selected from the group consisting of an .alpha.-cyanoacrylate compound, and a 1,1-disubstituted diene compound;and(B) a room temperature self-curing adhesive containing from 0.05 to 50% by weight of an anion polymerization accelerator, said self-curing adhesive being selected from the group consisting of (1) a room temperature moisture-curing adhesive, (2) a room temperature curing two-part type epoxy resin adhesive, and (3) a room temperature curing synthetic resin aqueous emulsion adhesive, which comprises applying said two adhesives (A) and (B) at the bonding interface of the objects so that they do not contact each other and pressing the objects to each other to bring the two adhesives in contact with each other.Type: GrantFiled: July 2, 1987Date of Patent: December 27, 1988Assignee: Cemedine Co., Ltd.Inventors: Naomi Okamura, Hiroshi Aoki, Junzo Makino, Hajime Yagi, Yasuo Arai, Takashi Yamanaka
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Patent number: 4537743Abstract: The disclosed electrode composition for a vacuum switch comprises copper, as a principal ingredient, a low melting point metal such as Bi, Pb, In, Li, Sn or any of their alloys, in a content not exceeding 20% by weight, a first additional metal such as Te, Sb, La, Mg or any of their alloys and a refractory metal such as Cr, Fe, Co, Ni, Ti, W or any of their alloys in a content less than 40% by weight.Type: GrantFiled: June 25, 1984Date of Patent: August 27, 1985Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takashi Yamanaka, Yasushi Takeya, Mitsumasa Yorita, Toshiaki Horiuchi, Kouichi Inagaki, Eizo Naya, Michinosuke Demizu, Mitsuhiro Okumura
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Patent number: 4499009Abstract: The disclosed electrode composition for a vacuum switch comprises copper, as a principal ingredient, a low melting point metal such as Bi, Pb, In, Li, Sn or any of their alloys, in a content not exceeding 20% by weight, a first additional metal such as Te, Sb, La, Mg or any of their alloys and a refractory metal such as Cr, Fe, Co, Ni, Ti, W or any of their alloys in a content less than 40% by weight.Type: GrantFiled: December 20, 1982Date of Patent: February 12, 1985Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takashi Yamanaka, Yasushi Takeya, Mitsumasa Yorita, Toshiaki Horiuchi, Kouichi Inagaki, Eizo Naya, Michinosuke Demizu, Mitsuhiro Okumura
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Patent number: 4424429Abstract: A contactor for a vacuum type circuit interrupter having a pair of detachable electrodes in a vacuum chamber comprises an electrode obtained by melting or sintering a composition of an electric conductive metal of copper or silver as a main component and at least one metal oxide having a melting point lower than that of said conductive metal of bismuth oxide, thallium oxide, indium oxide, antimony oxide or tellurium oxide as an additive, in vacuum or a reduced atmosphere or a nonoxidative atmosphere.Type: GrantFiled: December 30, 1981Date of Patent: January 3, 1984Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takashi Yamanaka, Kouichi Inagaki, Eizo Naya, Michinosuke Demizu, Mitsuhiro Okumura
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Patent number: 4419553Abstract: A vacuum type circuit breaker which has an operating lever (31) connected at one end thereof to the movable electrode (102) of a vacuum switch tube (1) and at the other end to a closing spring (55) through an energy storage link mechanism (54). The operating lever (31) functions to drive the movable electrode (102). The energy storage link mechanism (54) is provided with an energy storage crank (52) pivotally supported on a shaft (2051). The force which the energy storage link mechanism (54) applies to the operating lever (31) is set such that it is less than a force on the operating lever (31) which is produced by the difference between the internal pressure of the vacuum switch tube (1) and atmospheric pressure. This arrangement makes it possible, upon occurrence of vacuum loss, to detect the vacuum shortage, whereupon the closing of the switch is prevented to thereby avoid an accident due to vacuum degradation.Type: GrantFiled: December 31, 1981Date of Patent: December 6, 1983Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masayuki Ohshita, Toshiaki Horiuchi, Takashi Yamanaka, Yoshihiro Usui
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Patent number: 4415787Abstract: A vacuum interrupter for opening and closing a current passage comprises a pair of electrodes which are detachable and respectively connected to each of conductive rods in a vacuum container, wherein each of said electrodes comprises one or more grooves to cut the peripheral part of the electrode at one end and to approach the other end near the peripheral part of the electrode to form a current passage and also each current conductor connecting electrically said electrode to said conductive rod near the cut part of said electrode deviated from the center of said electrode, whereby a magnetic field in parallel to the arc between said pair of electrodes is formed.Type: GrantFiled: March 23, 1981Date of Patent: November 15, 1983Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Takashi Yamanaka
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Patent number: 4357747Abstract: An insulated gate type field effect transistor forming one cell of a high density integrated circuit semiconductor memory device and a method for producing the same are disclosed. A channel stopper region of the same conductivity type as the substrate but having a higher impurity concentration is disposed contiguous to the width edge of the channel region, and a thick field oxide film is provided outside of the channel stopper region. The channel stopper region is self-aligned with the width edges of the gate electrode, and an insulator film having a thinner film thickness than that of the thick field oxide film is formed on the channel stopper region. In one embodiment, a second channel stopper region similar to the first is provided at the surface of the substrate under the field oxide film. A capacitor region is associated with the field effect transistor, and together they form a memory cell which is substantially surrounded by an isolating region including the thick field oxide film.Type: GrantFiled: September 30, 1980Date of Patent: November 9, 1982Assignee: Nippon Electric Co., Ltd.Inventors: Osamu Kurakami, Shigeru Koshimaru, Takashi Yamanaka
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Patent number: 4268847Abstract: An insulated gate type field effect transistor forming one cell of a high density integrated circuit semiconductor memory device and a method for producing the same are disclosed. A channel stopper region of the same conductivity type as the substrate but having a higher impurity concentration is disposed contiguous to the width edge of the channel region, and a thick field oxide film is provided outside of the channel stopper region. The channel stopper region is self-aligned with the width edges of the gate electrode, and an insulator film having a thinner film thickness than that of the thick field oxide film is formed on the channel stopper region. In one embodiment, a second channel stopper region similar to the first is provided at the surface of the substrate under the field oxide film. A capacitor region is associated with the field effect transistor, and together they form a memory cell which is substantially surrounded by an isolating region including the thick field oxide film.Type: GrantFiled: September 15, 1978Date of Patent: May 19, 1981Assignee: Nippon Electric Co., Ltd.Inventors: Osamu Kurakami, Shigeru Koshimaru, Takashi Yamanaka
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Patent number: 4167659Abstract: An operation mechanism of a switch comprises a first slidable device connected to a moving electrode of the switch; a second slidable device faced to the first slidable device with a gap; and a wedge type element which is inserted between both slidable devices to move the first slidable device depending upon the movement by a driving means and to move the moving electrode, whereby the electrode of switch is turned on and off depending upon the movement of the wedge type element inserted between both of the slidable devices.Type: GrantFiled: December 30, 1976Date of Patent: September 11, 1979Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takashi Yamanaka, Keikichi Kondo
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Patent number: 4087841Abstract: An automatic cartridge-rejecting apparatus for use with a cartridge tape-playing device, wherein, when an endless tape is transported fully over any or all of the tracks formed on the endless tape, then the driving force of a capstan-rotating motor is transmitted to an automatic cartridge-rejecting cam through a reduction gear system in response to an electric signal set forth from a track changeover senser; and a driving rod connected to a cam follower continuously pushes a cartridge elastically or detachably locked by a spring in the cartridge-loading unit of the tape-playing device forcefully and gently at a low speed until the cartridge is released from the lock.Type: GrantFiled: May 12, 1976Date of Patent: May 2, 1978Assignee: Tanashin Denki Co., Ltd.Inventors: Shinsaku Tanaka, Takashi Yamanaka