Patents by Inventor Yukio Suzuki
Yukio Suzuki 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: 5224742Abstract: A cut-off material is provided, which includes an impermeable cutoff member (10, 70) provided with an expandable hose portion (18, 72) and a flange portion (20, 74) formed integrally with one end of the hose portion. The cutoff member is disposed in first and second pipelines, so that the flange portion is positioned within the first pipeline (12) and that the hose portion is positioned within the second pipeline (14). The cut-off member is maintained, for example, by a base (24,54,82) that is wound to be radially expandable, so that the flange portion is brought into liquid tight contact with the inner surface of the first pipeline and the hose portion extends within the second pipeline.Type: GrantFiled: July 29, 1991Date of Patent: July 6, 1993Assignees: Toa Grout Kogyo Kabushiki Kaisha, Kabushiki Kaisha Iseki Kaihatsu KokiInventors: Sinkiti Ooka, Yukio Suzuki, Hisashi Kitajima, Hidehiro Noda
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Patent number: 5200415Abstract: Described herein are pyrazolo[1,5-a]pyridine-3-carboxylic acid derivatives represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 individually mean a hydrogen atom or a lower alkyl group, R.sub.3 denotes an azabicyclo group containing a tertiary nitrogen atom, and Y stands for --O-- or --NH--, or salts thereof. Their preparation process and serotonin receptor antagonists containing them as active ingredients are also described.Type: GrantFiled: October 29, 1991Date of Patent: April 6, 1993Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Takeo Higashino, Yukio Suzuki, Takehiko Sasahara, Tetsu Saito, Daisuke Mochizuki
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Patent number: 5171573Abstract: A novel glycoside, 4.sup.G -alpha-D-glucopyranosyl rutin, is formed by a saccharide-transferring enzyme and glucoamylase in a solution which contains rutin together with glucoamylase. The 4.sup.G -alpha-D-glucopyranosyl rutin formed in such a solution is purified with a synthetic macroreticular resin, and crystallization in an organic solvent yields a complex crystal with the organic solvent. 4.sup.G -Alpha-D-glucopyranosyl rutin exhibits the same molecular absorption coefficient as intact rutin, and is readily water-soluble, substantially tasteless and odorless, and readily hydrolyzable in vivo to exhibit physiological activities inherent to rutin. These render 4.sup.G -alpha-D-glucopyranosyl rutin very useful as a highly-safe, natural yellow coloring agent, antioxidant, stabilizer, quality-improving agent, preventive, remedy, uv-absorbent and deterioration-preventing agent in foods, beverages, tobaccos, cigarets, feeds, pet foods, pharmaceuticals, cosmetics and plastics.Type: GrantFiled: August 15, 1991Date of Patent: December 15, 1992Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku KenkyujoInventors: Yukio Suzuki, Kei Suzuki, Masaru Yoneyama, Toshio Miyake
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Patent number: 5155259Abstract: An aldose reductase inhibitor, comprising a compound of the formula (I) ##STR1## or a pharmaceutically acceptable salt thereof as the effective component, in which R is lower alkyl or cyclohexylmethyl and n is 2 or 3. The compounds of formula (I) and salts thereof according to the invention exhibit a superior aldose reductase inhibiting activity with simultaneous high stability, so that they are useful for the prevention and therapy of diabetic complications.Type: GrantFiled: August 8, 1991Date of Patent: October 13, 1992Assignee: Toyo Jozo Kabushiki KaishaInventors: Yukio Suzuki, Kouichi Kuno, Motoshi Shoda, Masao Yaso, Satoshi Yaginuma, Akira Asahi
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Patent number: 5154926Abstract: The present invention relates to a syrup composition characterized in that the composition contains phenobarbital or acetaminophen, a polyhydric alcohol and/or a polymer of a polyhydric alcohol, and a water soluble macromolecule, and the weight ratio of phenobarbital to the polyhydric alcohol and/or the polymer of the polyhydric alcohol is from 1:20 to 1:100, and the weight ratio of phenobarbital to the water soluble macromolecule is from 1:1 to 1:20, which has a reduced bitterness and is easy to take.Type: GrantFiled: February 6, 1991Date of Patent: October 13, 1992Assignee: Showa Yakuhin Kako Co., Ltd.Inventors: Yoshihiko Kawasaki, Yukio Suzuki
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Patent number: 5145781Abstract: Alpha-glycosyl rutin is formed at a high concentration by allowing a saccharide-transferring enzyme to act on a high-rutin content liquid in suspension or solution to effect saccharide-transfer reaction. The resultant alpha-glycosyl rutin is easily recovered from the reaction mixture by allowing it to contact with a synthetic macroreticular resin. Alpha-glycosyl rutin is superior in water-solubility, resistance to light and stability to intact rutin, as well as having the physiological activities as intact rutin has. Thus, alpha-glycosyl rutin is favorably usable as a yellow coloring agent, antioxidant, stabilizer, fading-preventing agent, quality-improving agent, preventive, remedy, uv-absorbent and deterioration-preventing agent in foods, beverages, tobaccos, cigarettes, feeds, pet foods, pharmaceuticals for susceptive diseases, cosmetics including skin-refining agent and skin-whitening agent, and plastics, in addition to the use in vitamin P-enriching agents.Type: GrantFiled: March 7, 1990Date of Patent: September 8, 1992Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku KenkyujoInventors: Yukio Suzuki, Kei Suzuki, Masaru Yoneyama, Hiromi Hijiya, Toshio Miyake
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Patent number: 5136090Abstract: An aldose reductase inhibitor, comprising a compound of the formula ##STR1## or a pharmaceutically acceptable salt thereof as the effective component, in which R denotes an alkyl of C.sub.1-12, ##STR2## wherein X.sub.1 and X.sub.2 are same or different and are hydrogen or halogen, cyclohexylmethyl, cyclohexyl, tetra-hydro-2H-pyran-1-yl-methyl, carboxy-lower alkyl or cyclo-lower alkyl and n is 2 or 3. These compounds exhibit a superior aldose reductase inhibiting activity with simultaneous high stability, and are for use in the prevention and therapy of diabetic complications.Type: GrantFiled: August 8, 1991Date of Patent: August 4, 1992Assignee: Toyo Jozo Kabushiki KaishaInventors: Yukio Suzuki, Kouichi Kuno, Motoshi Shoda, Masao Yaso, Satoshi Yaginuma, Akira Asahi
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Patent number: 5103120Abstract: In an input level converter for TTL - CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the input level converter can be lessened. Similarly, in an output level converter for CMOS - TTL level conversion (or other conversion from CMOS) for the internal logic block operating with the CMOS levels, an output transistor for executing the charge or discharge of the output load capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the output level converter can also be lessened.Type: GrantFiled: January 2, 1991Date of Patent: April 7, 1992Assignee: Hitachi, Ltd.Inventors: Yukio Suzuki, Ikuro Masuda, Masahiro Iwamura, Shinji Kadono, Akira Uragami, Masayoshi Yoshimura, Toshiaki Matsubara
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Patent number: 5092959Abstract: A spray dryer device for spray drying a sample dissolved in an organic solvent is disclosed, comprising a circulation line in which an inert gas is circulated by a blower, a heater for heating the inert gas to a specified temperature, a main drying chamber provided with a spray nozzle through which the sample dissolved in the organic solvent is sprayed into the inert gas, a collector in which the powdered sample produced in the main drying chamber is collected, and a condenser in which the gaseous organic solvent is condensed and recovered. The powdered sample is obtained in this spray dryer device for spray drying organic solvents by spraying the organic solvent through the spray nozzle into the main drying chamber in which the oxygen concentration is held to a low value by the introduction of the inert gas.Type: GrantFiled: August 2, 1990Date of Patent: March 3, 1992Assignee: Yamato Scientific Co., Ltd.Inventors: Takeshi Orii, Yukio Suzuki, Tamotsu Konishi, Naoki Kumagai, Hiroaki Mori
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Patent number: 5053644Abstract: A semiconductor integrated circuit is so designed that it is possible to form any one of the three different kinds of circuit configuration, that is, an inverter circuit, a Schmitt circuit and a common-mode circuit, as desired, by employing circuit elements prepared in advance and by changing wiring. Also disclosed is a semiconductor integrated circuit having these circuit configurations. The output stage of any one of the three kinds of circuit is constituted by a bipolar transistor, and the other portions are constituted by MOS field-effect transistors.Type: GrantFiled: May 16, 1986Date of Patent: October 1, 1991Assignee: Hitachi, Ltd.Inventors: Manabu Shibata, Akira Uragami, Shinji Kadono, Yukio Suzuki
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Patent number: 5042010Abstract: In order to provide high speed and lower power consumption, a semiconductor integrated circuit is constructed to utilize both CMOS elements and bipolar transistors. The bipolar transistors are used in the output portions to take advantage of their speed of operation to allow rapid charging and discharging of output lines. In the meantime, the principal operating portiosn of the circuit use CMOS elements of lower power consumption. This arrangement is particulary advantageous in memory circuits.Type: GrantFiled: May 8, 1990Date of Patent: August 20, 1991Assignee: Hitachi, Ltd.Inventors: Katsumi Ogiue, Yukio Suzuki, Ikuro Masuda, Masanori Odaka, Hideaki Uchida
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Patent number: 5026833Abstract: A novel glycoside, 4.sup.G -alpha-D-glucopyranosyl rutin, is formed by a saccharide-transferring enzyme and glucoamylase in a solution which contains rutin together with glucoamylase. The 4.sup.G -alpha-D-glucopyranosyl rutin formed in such a solution is purified with a synthetic macroreticular resin, and crystallization in an organic solvent yields a complex crystal with the organic solvent. 4.sup.G -Alpha-D-glucopyranosyl rutin exhibits the same molecular absorption coefficient as intact rutin, and is readily water-soluble, substantially tasteless and odorless, and readily hydrolyzable in vivo to exhibit physiological activities inherent to rutin. These render 4.sup.G -alpha-D-glucopyranosyl rutin very useful as a highly-safe, natural yellow coloring agent, antioxidant, stabilizer, quality-improving agent, preventive, remedy, uv-absorbent and deterioration-preventing agent in foods, beverages, tobaccos, cigarets, feeds, pet foods, pharmaceuticals, cosmetics and plastics.Type: GrantFiled: March 7, 1990Date of Patent: June 25, 1991Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku KenkyujuInventors: Yukio Suzuki, Kei Suzuki, Masaru Yoneyama, Toshio Miyake
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Patent number: 5001237Abstract: A compound of the formula ##STR1## wherein Q is --CO-- or --CH.sub.2 --, R is hydroxyl, lower alkoxy, halogen, --NH-lower alkylene-OH, --NH-lower alkylene-arylthio, --NH-lower alkylene-halogen, ##STR2## is dilower alkylamino, cycloalkylamino, morpholino, ##STR3## in which R.sub.9 is hydrogen, lower alkyl or aryl, R.sub.10 is hydrogen, lower alkyl, hydroxy-lower alkyl, hydroxy-lower alkoxy-lower alkyl or di(aryl)-lower alkyl, m is an integer from 4 to 6, n is 2 or 3, R.sub.1 is alkyl or aryl-lower alkyl, R.sub.2 and R.sub.3 are each lower alkyl, or together form tetramethylene, and R.sub.4 is hydrogen, lower alkyl or aryl, in which aryl is phenyl which is optionally substituted with a group selected from the group consisting of 1-3 halogen, nitro, lower alkyl and lower alkoxy, or a pharmaceutically acceptable salt thereof, inhibits blood platelet aggregation, has vasodilating activity and inhibits lipoperoxide generation.Type: GrantFiled: July 19, 1989Date of Patent: March 19, 1991Assignee: Toyo Jozo Kabushiki KaishaInventors: Masao Yaso, Yukio Suzuki, Kensuke Shibata, Daisuke Mochizuki, Eiichi Hayashi
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Patent number: 4983862Abstract: In an input level converter for TTL - CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the input level converter can be lessened. Similarly, in an output level converter for CMOS - TTL level conversion (or other conversion from CMOS) for the internal logic block operating with the CMOS levels, an output transistor for executing the charge or discharge of the output load capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the output level converter can also be lessened.Type: GrantFiled: October 31, 1989Date of Patent: January 8, 1991Assignee: Hitachi, Ltd.Inventors: Yukio Suzuki, Ikuro Masuda, Masahiro Iwamura, Shinji Kadono, Akira Uragami, Masayoshi Yoshimura, Toshiaki Matsubara
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Patent number: 4983263Abstract: A zincate type zinc alloy electroplating bath which comprises a Zn compound, an alkali hydroxide, a salt of Fe(II, III) or Ni(II), a chelating agent for dissolving said salt of Fe(II, III) or Ni(II) and brightening agents. The chelating agent is selected from the group consisting of a commercially available chelating agent and a reaction product of a mixture of one or more kinds of aliphatic amine with epihalohydrin. The brightening agents contain alkylated polyalkylene polyamine in which some of the basic nitrogen atoms of polyalkylene polyamine are alkylated by alkyl groups of C.sub.1 to C.sub.3, and one or more compounds selected from the group consisting of reaction products of imidazole or its derivative with epihalohydrin and reaction products of imidazole or its derivative with epihalohydrin in the presence of aliphatic amine.Type: GrantFiled: November 17, 1989Date of Patent: January 8, 1991Assignee: Yuken Kogyo Kabushiki KaishaInventors: Yoshizumi Yasuda, Nobuaki Wada, Yukio Suzuki, Haruhisa Watai
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Patent number: 4961160Abstract: An LPC analyser calculates LPC coefficients using signals bandlimited to half the sampling frequency of the LPC coefficients to be calculated. Thef calculated LPC coefficients are continuous in time scale and free from aliasing distortion. A bandlimiting circuit suitable for use in the LPC analyser is also disclosed.Type: GrantFiled: April 27, 1988Date of Patent: October 2, 1990Assignee: Oki Electric Industry Co., Ltd.Inventors: Shinichi Sato, Atsushi Fukasawa, Takuro Sato, Yasuo Shoji, Haruhiro Shiino, Yukio Suzuki, Hiromi Ando
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Patent number: 4924439Abstract: In order to provide high speed and low power consumption, a semiconductor integrated circuit is constructed to utilize both CMOS elements and bipolar transistors. The bipolar transistors are used in the output portions to take advantage of their speed of operation to allow rapid charging and discharging of output lines. In the meantime, the principal operating portions of the circuit use CMOS elements of low power consumption. This arrangement is particularly advantageous in memory circuits.Type: GrantFiled: May 30, 1989Date of Patent: May 8, 1990Assignee: Hitachi, Ltd.Inventors: Katsumi Ogiue, Yukio Suzuki, Ikuro Masuda, Masanori Odaka, Hideaki Uchida
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Patent number: 4916743Abstract: A circuit for pattern matching on the frequency axis which inlcudes a first transformation section having an adaptive filter which is generally identical to an adaptive finite impulse response filter, but with its delay elements having been replaced by all-pass filters. The first transformation section performs frequency transformation on an input signal and is characterized by utilizing as tap coefficients for the adaptive filter, linear predictive analysis coefficients of the input speech signal. The first transformation section outputs linear predictive analysis coefficients of the frequency transformed input signal. A second transformation section is similar to the first transformation section but the tap coefficients of its adaptive filter are linear predictive analysis coefficients of a reference speech signal.Type: GrantFiled: April 27, 1988Date of Patent: April 10, 1990Assignee: Oki Electric Industry Co., Ltd.Inventors: Yumi Takizawa, Shinichi Sato, Atsushi Fukasawa, Takuro Sato, Hiromi Ando, Yukio Suzuki
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Patent number: 4894453Abstract: A compound of the formula ##STR1## wherein Q is --CO-- or --CH.sub.2 --, R is hydroxyl, lower alkoxy, halogen, --NH-lower alkylene-OH, --NH-lower alkylene-arylthio, --NH-lower alkylene-halogen, ##STR2## in which ##STR3## is dilower alkylamino, cycloalkylamino, morpholino, ##STR4## in which R.sub.9 is hydrogen, lower alkyl or aryl, R.sub.10 is hydrogen, lower alkyl, hydroxy-lower alkyl, hydroxy-lower alkoxy-lower alkyl or di(aryl)-lower alkyl, m is an integer from 4 to 6, n is 2 or 3, R.sub.1 is alkyl or aryl-lower alkyl, R.sub.2 and R.sub.3 are each lower alkyl, or together form tetramethylene, and R.sub.4 is hydrogen, lower alkyl or aryl, in which aryl is phenyl which is optionally substituted with a group selected from the group consisting of 1-3 halogen, nitro, lower alkyl and lower alkoxy, or a pharmaceutically acceptable salt thereof, inhibits blood platelet aggregation, has vasodilating activity and inhibits lipoperoxide generation.Type: GrantFiled: June 30, 1987Date of Patent: January 16, 1990Assignee: Toyo Jozo Kabushiki KaishaInventors: Masao Yaso, Yukio Suzuki, Kensuke Shibata, Daisuke Mochizuki, Eiichi Hayashi
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Patent number: 4879480Abstract: In an input level converter for TTL - CMOS level conversion (or other conversion to CMOS) for an internal logic block operating with CMOS levels, an output transistor for executing the charge or discharge of the output capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the input level converter can be lessened. Similarly, in an output level converter for CMOS - TTL level conversion (or other conversion from CMOS) for the internal logic block operating with the CMOS levels, an output transistor for executing the charge or discharge of the output load capacitance thereof is formed of a bipolar transistor. Thus, the propagation delay times and their capacitance-dependencies of the output level converter can also be lessened.Type: GrantFiled: September 2, 1988Date of Patent: November 7, 1989Assignee: Hitachi, Ltd.Inventors: Yukio Suzuki, Ikuro Masuda, Masahiro Iwamura, Shinji Kadono, Akiro Uragami, Masayoshi Yoshimura, Toshiaki Matsubara