Patents by Inventor Hiroshi Mitsuhashi
Hiroshi Mitsuhashi 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: 5181888Abstract: A belt driving system having at least one roller for adjusting creep within a plurality of rollers. Creep detecting means provided at one end of the creep adjusting roller is rotated by torque of a flat belt in contact with the creep detecting means. Biasing means for biasing the flat belt toward the creep detecting means and roller-end displacing means for converting the torque of the creep detecting means to displacement of the end of the creep adjusting roller toward a predetermined direction so that the flat belt is moved to the direction contrary to the creep caused by the biasing means are provided. When the flat belt creeps, the creep contrary to the original creep is caused by the roller-end displacing means, and thus the original creep is compensated. Consequently, stable running of the flat belt is obtained and clear pictures of the electrophotographic machine can be also obtained.Type: GrantFiled: May 24, 1991Date of Patent: January 26, 1993Assignee: Bando Chemical Industries, Inc.Inventors: Mitsuhiko Takahashi, Hirofumi Miyata, Shinya Yuki, Keizo Nonaka, Yoshihisa Nakano, Hiroshi Mitsuhashi, Katsuya Yamaguchi, Yasuhiko Yoshida
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Patent number: 5173040Abstract: An air compressor comprises a cylinder, a suction valve body operatively combined with the cylinder, wherein the suction valve body is in a form of a band plate having a shape of V-letter with a round bottom, both ends of the suction valve body being arranged outside a projection space of the cylinder and a portion of the suction valve body other than the both ends being arranged inside the projection space of the cylinder, and wherein the air compressor comprises a suction valve plate receptor which can overlap the suction valve body when the suction valve body is in suction stroke and which has a rigidity enough to restrict an amount of lift of the suction valve body.Type: GrantFiled: February 20, 1991Date of Patent: December 22, 1992Assignee: Tokico Ltd.Inventors: Tatsuya Yamazawa, Iwao Ohtani, Gen Kano, Hiroshi Mitsuhashi
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Patent number: 5160253Abstract: A scroll type fluid apparatus includes a casing having a flange member defining an annular recess therein, a drive shaft journalled on the casing and having a crank shaft formed at an inner end of the drive shaft extending in the casing, an orbiting scroll member rotatably mounted on the crank shaft and having a mirror-finished plate and a scroll wrap extending upright on the plate, a stationary scroll member mounted on the casing and including a mirror-finished plate having scroll wrap extending upright thereon and engaged with the scroll wrap of the orbiting scroll member, a suction port communicating with the interior of the annular recess of the annular flange member, a discharge port, and a sealing member disposed in the annular recess of the annular flange member for sealing a compression chamber within the annular recess from the interior of a body of the casing.Type: GrantFiled: July 17, 1991Date of Patent: November 3, 1992Assignee: Tokico Ltd.Inventors: Hiroki Okada, Hiroshi Mitsuhashi, Susumu Sakamoto
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Patent number: 5150191Abstract: An optical semiconductor device is provided with a p-type ZnSe semiconductor layer. Si, Cl and O atoms are added, as dopants, to the ZnSe semiconductor layer. Associations of the Si, Cl and O atoms are formed to define a shallow acceptor level in the semiconductor layer. Each of the associations comprises one Si atom, one Cl atom and one O atom by which the lattice points of Se are displaced between those crystal lattice points in the semiconductor layer which are adjacent to one another.Type: GrantFiled: November 21, 1990Date of Patent: September 22, 1992Assignee: Kabushiki Kaisha ToshibaInventors: Nawoto Motegi, Tsutomu Uemoto, Atsushi Kamata, Hiroshi Mitsuhashi
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Patent number: 5106859Abstract: A novel thiadiazole derivative represented by the following formula I: ##STR1## wherein when n is 0, m is 0, and when n is 1, m is 0 or 1, and the preparation of this derivative and the use of this derivative as an anti-ulcer agent.Type: GrantFiled: July 30, 1990Date of Patent: April 21, 1992Assignee: Tsumura & Co.Inventors: Yoshihiro Hasegawa, Toshihiko Yanagisawa, Kunio Hosaka, Hiroshi Mitsuhashi
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Patent number: 5106871Abstract: The present invention relates to an anti-ulcer agent comprising a compound represented by the following general formula I as the effective ingredient, and a novel chalcone derivative included in the compound represented by this general formula I: ##STR1## wherein X and Y independently stand for a hydrogen atom or together form a single bond, R.sub.1 stands for a hydroxyl group, an acetoxy group, a carboxymethoxy group or a methoxycarbonylmethoxy group, R.sub.2 stands for a hydrogen atom, an isoprenyl group, isopentyl group or a propyl group, R.sub.3 stands for hydroxyl group or a methoxy group, R.sub.4 stands for a hydrogen atom, a hydroxyl group or a methoxy group, R.sub.5 stands for a hydrogen atom, a hydroxyl group, a methoxy group or an isopentyl group, R.sub.6 stands for a hydroxyl group, a methoxy group or a carboxymethoxy group, and R.sub.7 stands for a hydrogen atom or a methoxy group.Type: GrantFiled: July 19, 1991Date of Patent: April 21, 1992Assignee: Tsumura & Co.Inventors: Yukio Komazawa, Shigefumi Takeda, Kunio Hosaka, Hiroshi Mitsuhashi, Toshihiko Watanabe
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Patent number: 5032685Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action, which is effective for the remedy of liver diseases such as acute hepatitis and chronic hepatitis, a process for the preparation of this derivative and a liver ailment-moderating agent comprising this derivative as an active ingredient. Moreover, the present invention relates to a compound valuable as the intermediate compound for the synthesis of this derivative and a process for efficiently preparing this intermediate compound.Type: GrantFiled: November 21, 1989Date of Patent: July 16, 1991Assignee: Tsumura Juntendo, Inc.Inventors: Yoshiyuki Matsuoka, Kunio Hosaka, Shigefumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4996331Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action and effective as a remedy for acute hepatitis and chronic hepatitis, a process for the preparation of this biphenyl derivative and a liver ailment-moderating agent comprising this diphenyl derivative as an effective ingredient. This diphenyl derivative is represented by the following formula: ##STR1## wherein R.sub.0 and R.sub.1 independently stand for a lower alkyl group or R.sub.0 and R.sub.1 together represent a group O.dbd.C<, R.sub.2 stands for an alkyl group having 1 to 3 carbon atoms, and R.sub.3 and R.sub.4 independently stand for a hydrogen atom or a lower alkyl group.Type: GrantFiled: April 24, 1989Date of Patent: February 26, 1991Assignee: Tsumura & Co.Inventors: Masayuki Kimura, Kunio Hosaka, Shigehumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4987240Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action, which is effective for the remedy of liver diseases such as acute hepatitis and chronic hepatitis, a process for the preparation of this derivative and a liver ailment-moderating agent comprising this derivative as an active ingredient. Moreover, the present invention relates to a compound valuable as the intermediate compound for the synthesis of this derivative and a process for efficiently preparing this intermediate compound.Type: GrantFiled: November 21, 1989Date of Patent: January 22, 1991Assignee: Tsumura & Co.Inventors: Yoshiyuki Matsuoko, Kunio Hosaka, Shigefumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4962211Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action, which is effective for the remedy of liver diseases such as acute hepatitis and chronic hepatitis, a process for the preparation of this derivative and a liver ailment-moderating agent comprising this derivative as an active ingredient. Moreover, the present invention relates to a compound valuable as the intermediate compound for the synthesis of this derivative and a process for efficiently preparing this intermediate compound.Type: GrantFiled: November 21, 1989Date of Patent: October 9, 1990Assignee: Tsumura & Co.Inventors: Yoshiyuki Matsuoka, Kunio Hosaka, Shigefumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4938663Abstract: A compressor which is provided with a safety device so that it is possible to detect occurrence of a primary accident, for example, breakage of a connecting rod, in the early stage. The compressor has a pressure sensor installed at a predetermined position in the compressor to detect the level of pressure at that position, a memory means for storing the behavior of the pressure change at the predetermined position that is obtained when the compressor is running in a normal state, a means for judging the behavior of the pressure change actually taking place at the predetermined position on the basis of an output from the pressure sensor and making a comparison between the actual pressure change behavior and the pressure change behavior in the normal state that is stored in the memory means, and a means for suspending the compressor when the actual pressure change behavior is different from the pressure change behavior in the normal state.Type: GrantFiled: February 17, 1989Date of Patent: July 3, 1990Assignee: Tokico Ltd.Inventors: Hiroshi Mitsuhashi, Harutsugu Ushiota, Akiharu Odagiri, Gen Kanoh, Susumu Sakamoto
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Patent number: 4937325Abstract: A monoazo dyestuff composition comprising at least two different individual compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2, independently of each other, are linear or branched alkyl having 1 to 4 carbon atoms and R is linear or branched alkyl having 1 to 5 carbon atoms, and where said individual compounds differ from each other in at least the R moiety. The monoazo dyestuff mixtures are used for the dyeing and printing of hydrophobic fibers such as high molecular weight polyesters of their mixtures with natural fiber material.Type: GrantFiled: December 12, 1988Date of Patent: June 26, 1990Assignees: Cassella Aktiengesellschaft, Tokico Ltd.Inventors: Ulrich Buhler, Klaus Hofmann, Hiroshi Mitsuhashi, Harutsugu Ushiota, Akiharu Odagiri, Gen Kano, Susumu Sakamoto
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Patent number: 4936747Abstract: An air compressor includes a crankcase, a cylinder secured to the crankcase, a crankshaft disposed inside the crankcase and adapted to be rotated by a drive means, a piston reciprocatively installed inside the cylinder, and a connecting rod for connecting the crankshaft to the piston. Part of the drive power circuit of the drive means is constructed so as to be cut off when displacement of the constituent members of the compressor other than predetermined displacement occurs and/or when the temperature inside the compressor rises above a predetermined value. Thus the passage of electric current to the drive means is cut off, the compressor being brought to a halt without causing secondary damage to develop.Type: GrantFiled: May 18, 1988Date of Patent: June 26, 1990Assignee: Tokico Ltd.Inventors: Hiroshi Mitsuhashi, Harutsugu Ushiota, Akiharu Odagiri, Gen Kano, Susumu Sakamoto
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Patent number: 4925872Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action and effective as a remedy for acute hepatitis and chronic hepatitis, a process for the preparation of this biphenyl derivative and a liver ailment-moderating agent comprising this diphenyl derivative as an effective ingredient. This diphenyl derivative is represented by the following formula: ##STR1## wherein R.sub.0 and R.sub.1 independently stand for a lower alkyl group or R.sub.0 and R.sub.1 together represent a group O.dbd.C<, R.sub.2 stands for an alkyl group having 1 to 3 carbon atoms, and R.sub.3 and R.sub.4 independently stand for a hydrogen atom or a lower alkyl group.Type: GrantFiled: April 24, 1989Date of Patent: May 15, 1990Assignee: Tsumura & Co.Inventors: Masayuki Kimura, Kunio Hosaka, Shigehumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4904694Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action, which is effective for the remedy of liver diseases such as acute hepatitis and chronic hepatitis, a process for the preparation of this derivative and a liver ailment-moderating agent comprising this derivative as an active ingredient. Moreover, the present invention relates to a compound valuable as the intermediate compound for the synthesis of this derivative and a process for efficiently preparing this intermediate compound.Type: GrantFiled: February 10, 1988Date of Patent: February 27, 1990Assignee: Tsumura & Co.Inventors: Yoshiyuki Matsuoka, Kunio Hosaka, Shigefumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4849448Abstract: The present invention relates to a novel biphenyl derivative having a liver ailment-moderating action and effective as a remedy for acute hepatitis and chronic hepatitis, a process for the preparation of this biphenyl derivative and a liver ailment-moderating agent comprising this diphenyl derivative as an effective ingredient. This diphenyl derivative is represented by the following formula: ##STR1## wherein R.sub.0 and R.sub.1 independently stand for a lower alkyl group or R.sub.0 and R.sub.1 together represent a group O.dbd.C<, R.sub.2 stands for an alkyl group having 1 to 3 carbon atoms, and R.sub.3 and R.sub.4 independently stand for a hydrogen atom or a lower alkyl group.Type: GrantFiled: January 19, 1988Date of Patent: July 18, 1989Assignee: Tsumura Juntendo, Inc.Inventors: Masayuki Kimura, Kunio Hosaka, Shigehumi Takeda, Hiroshi Mitsuhashi
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Patent number: 4688624Abstract: In the horizontal continuous casting of metal, an upper contact part and a lower contact part of the metal body are horizontally displaced with the inner wall of the tubular chilled mold relative to one another, so that the lower contact part is psoitioned downstream relative to the upper contact part.Type: GrantFiled: September 16, 1986Date of Patent: August 25, 1987Assignee: Showa Aluminum Industries K.K.Inventors: Kengi Suzuki, Tadanao Itoh, Hiroshi Mitsuhashi, Yuichi Ozawa, Sadao Hasegawa, Takeshi Yamauchi
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Patent number: 4653571Abstract: In the horizontal continuous casting of metal, an upper contact part and a lower contact part of the metal body are horizontally displaced with the inner wall of the tubular chilled mold relative to one another, so that the lower contact part is positioned downstream relative to the upper contact part. Gas pressure is used to displace the contact point.Type: GrantFiled: July 19, 1985Date of Patent: March 31, 1987Assignee: Showa Aluminum Industries K.K.Inventors: Kengi Suzuki, Tadanao Itoh, Hiroshi Mitsuhashi, Yuichi Ozawa, Sadao Hasegawa, Takeshi Yamauchi
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Patent number: 4452786Abstract: Novel condurango glycoside compounds, antitumor agents comprising them and processes for their preparation, compositions containing them and methods of treating tumor with them are disclosed herein in which the novel condurango glycoside compounds are represented by the following formula (I): ##STR1## where X together with the 13 and 14 position carbon atoms is a group selected from the group consisting of ##STR2##Type: GrantFiled: November 2, 1981Date of Patent: June 5, 1984Assignee: Zenyaku Kogyo Kabushiki KaishaInventors: Hiroshi Mitsuhashi, Den-ichi Mizuno, Koji Hayashi, Shigeru Abe, Muneaki Takase, Toshiharu Narita
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Patent number: 4320120Abstract: New extracts of Marsdenia cundurango Reichenbach fil., processes for preparing them, antitumor agents comprising them, compositions containing them and methods of treating tumor with them are described herein in which the extracts consist essentially of the portion of Marsdenia cundurango Reichenbach fil. which is soluble in lower alcohols and in chlorinated hydrocarbons other than carbon tetrachloride and insoluble in carbon tetrachloride or aromatic hydrocarbons.Type: GrantFiled: August 18, 1980Date of Patent: March 16, 1982Assignee: Zenyaku Kogyo Kabushiki KaishaInventors: Hiroshi Mitsuhashi, Den-ichi Mizuno, Koji Hayashi, Shigeru Abe, Muneaki Takase, Toshiharu Narita