Patents by Inventor Ichiro Ishizuka
Ichiro Ishizuka 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: 6259325Abstract: The present invention discloses a single-ended signals to differential signals converter. In this invention, a first circuit comprising a transistor outputting single-ended signals and a first spiral inductor connected as an inductor for load use that contributes in determining frequency characteristics of a first circuit to either one of output terminals of higher voltage side and lower voltage side of the transistor, and a second circuit comprising a pair of differential input terminals for inputting differential signals and a second spiral inductor that is magnetically coupled with the first spiral inductor, and both ends thereof are connected to the differential input terminals, respectively, are formed within a monolithic integrated circuit.Type: GrantFiled: November 24, 1999Date of Patent: July 10, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Shin'ichiro Ishizuka, Yasunori Miyahara
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Patent number: 5082947Abstract: A novel compound useful as an intermediate for synthesizing pesticides and medicine of the formula: ##STR1## in which: R is perfluoroalkyl, R.sup.1 is hydrogen, alkyl or optionally substituted phenyl, or a salt thereof.Type: GrantFiled: June 19, 1990Date of Patent: January 21, 1992Assignee: Shionogi & Co., Ltd.Inventors: Shinzaburo Sumimoto, Ichiro Ishizuka, Shiro Ueda, Hiroyuki Kai
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Patent number: 4910326Abstract: A fluorinated .beta.-ketonitrile of the formula: ##STR1## in which: R is alkyl having plural fluorines and R.sup.1 is hydrogen or alkyl.Type: GrantFiled: March 10, 1988Date of Patent: March 20, 1990Assignee: Shionogi & Co., Ltd.Inventors: Sumimoto Shinzaburo, Ichiro Ishizuka, Hiroyuki Kai, Shiro Ueda, Akira Takase
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Patent number: 4888044Abstract: A novel herbicidal compound of the formula: ##STR1## in which R is OH, C.sub.1 -C.sub.3 alkoxy or R.sup.3 -N-R.sup.4 ; R.sub.f is C.sub.1 -C.sub.3 perfluoroalkyl; R.sup.1 is hydrogen, C.sub.1 -C.sub.6 alkyl or optionally substituted phenyl; R.sup.2 is hydrogen or C.sub.1 -C.sub.3 alkyl; n is an integer of 0 to 2; R.sup.3 is hydrogen or C.sub.1 -C.sub.3 alkyl; R.sup.4 is C.sub.1 -C.sub.6 alkyl, optionally substituted phenylalkyl where alkyl contains 1 to 3 carbons or optionally substituted phenyl; or R.sup.3 and R.sup.4 together with the nitrogen atom to which they are attached form a cyclic amino group; or a salt thereof. A process for preparing the compound (I) and a herbicide containing the compound (I) are also disclosed.Type: GrantFiled: August 24, 1987Date of Patent: December 19, 1989Assignee: Shionogi & Co., Ltd.Inventors: Shinzaburo Sumimoto, Ichiro Ishizuka, Shiro Ueda, Hiroyuki Kai, Kinya Ide
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Patent number: 4797492Abstract: A novel compound useful as an intermediate for synthesizing pesticides and medicines of the formula: ##STR1## in which: R is alkyl having plural florines; R.sup.1 is hydrogen, alkyl, halogen or optionally substituted phenyl; and R.sup.2 is hydrogen or alkyl, or a salt thereof.Type: GrantFiled: October 22, 1986Date of Patent: January 10, 1989Assignee: Shionogi & Co., Ltd.Inventors: Shinzaburo Sumimoto, Ichiro Ishizuka, Hiroyuki Kai, Shiro Ueda, Akira Takase
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Patent number: 4594203Abstract: The present invention relates to a method for producing a thermoplastic polymeric sheet, wherein a molten thermoplastic polymer is extruded from an extrusion die in the form of a sheet onto a moving quenching member, with an electric potential difference being established between the surface of the moving quenching member and the extrusion die, whereby the polymer is caused to electrostatically solidify and adhered to the surface of the quenching member. The contact area of the polymeric sheet with the moving quenching member is held in an atmosphere of a gas which posesses better insulating properties than standard air. Thus the present invention provides a useful method that can produce, at higher speeds than conventional method, polymer sheets of high surface quality which avoid the operational problems encountered in the conventional methods.Type: GrantFiled: March 13, 1984Date of Patent: June 10, 1986Assignee: Toray Industries, Inc.Inventors: Satoru Hagiwara, Ichiro Ishizuka, Kazuo Okabe
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Patent number: 4293328Abstract: Herbicidal compounds represented by the formula: ##STR1## wherein R is t-butyl; R.sup.1 is hydrogen or methyl; R.sup.2 is alkyl (C.sub.2 to C.sub.6), alkenyl (C.sub.3 to C.sub.4) or cyclopropyl; and X is hydrogen or halogen; and herbicidal compositions containing them.Type: GrantFiled: June 7, 1978Date of Patent: October 6, 1981Assignee: Shionogi & Co., Ltd.Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
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Patent number: 4256899Abstract: 3-Amino-5-t-butylisoxazole is prepared by reacting pivaloylacetonitrile with hydroxylamine in aqueous medium under basic conditions and treating the reaction products with an acid. The process is economical and industrial.Type: GrantFiled: October 5, 1979Date of Patent: March 17, 1981Assignee: Shionogi & Co., Ltd.Inventors: Yasuo Makisumi, Akira Murabayashi, Akira Takase, Ichiro Ishizuka, Shinzaburo Sumimoto
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Patent number: 4212981Abstract: 3-Isoxazolylurea derivatives of the formula: ##STR1## (wherein R represents hydrogen, C.sub.1 -C.sub.6 alkyl, or C.sub.6 -C.sub.8 aryl; R.sup.1 represents hydrogen or C.sub.1 -C.sub.6 alkyl; R.sup.2 represents C.sub.1 -C.sub.6 alkyl, C.sub.6 -C.sub.8 aralkyl, or C.sub.6 -C.sub.8 aryl; or ##STR2## represents pyrrolidino, piperidino, morpholino, or 4-alkylpiperazino; X represents hydrogen or halogen; or R and X may optionally form C.sub.3 -C.sub.5 alkylene), are prepared by reacting a carboxamide of the formula: ##STR3## (wherein R and X each is as defined above) with an amine of the formula:R.sup.1 --NH--R.sup.2(wherein R.sup.1 and R.sup.2 each is as defined above) in the presence of an alkaline hypohalite and an alkaline hydroxide in an inert solvent medium.Type: GrantFiled: November 16, 1977Date of Patent: July 15, 1980Assignee: Shionogi & Co., Ltd.Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
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Patent number: 4186144Abstract: Cyanopinacolone is produced by reacting pinacolone with about 1.0 to about 1.2 molar equivalents of chlorine in methanol and further reacting the resulting monochloropinacolone with about 1.0 to about 1.2 molar equivalents of an alkali metal cyanide in methanol.Type: GrantFiled: April 17, 1978Date of Patent: January 29, 1980Assignee: Shionogi & Co., Ltd.Inventors: Tsutomu Sugasawa, Tatsuo Toyoda, Kazuyuki Sasakura, Shiro Ueda, Akira Takase, Katsuto Okuno, Ichiro Ishizuka, Shinzaburo Sumimoto
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Patent number: 4116671Abstract: Isoxazole derivatives represented by the formula: ##STR1## wherein R represents hydrogen, alkyl group, or aryl group, R.sup.1 represents hydrogen, or alkyl group, R.sup.2 represents acyl group, a ##STR2## group [R.sup.3 and R.sup.4 each represent hydrogen, alkyl group, alkenyl group, alkynyl group, aralkyl group, aryl group, alkoxy group, or alkylthio group; or optionally R.sup.3 and R.sup.4 are combined with each other directly or indirectly including another hetero atom (nitrogen, oxygen, or sulfur) to form a nitrogen-containing ring], or a--CO--Y--R.sup.5group [R.sup.Type: GrantFiled: September 23, 1977Date of Patent: September 26, 1978Assignee: Shionogi & Co., Ltd.Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
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Patent number: 4111680Abstract: Isoxazole derivatives represented by the formula: ##STR1## wherein R represents hydrogen, alkyl group, or aryl group, R.sup.1 represents hydrogen, or alkyl group, R.sup.2 represents acyl group, a ##STR2## group [R.sup.3 and R.sup.4 each represent hydrogen, alkyl group, alkenyl group, alkynyl group, aralkyl group, aryl group, alkoxy group, or alkylthio group; or optionally R.sup.3 and R.sup.4 are combined with each other directly or indirectly including another hetero atom (nitrogen, oxygen, or sulfur) to form a nitrogen-containing ring], or a --CO--Y--R.sup.5 group[R.sup.Type: GrantFiled: September 23, 1977Date of Patent: September 5, 1978Assignee: Shionogi & Co., Ltd.Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
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Patent number: 4062861Abstract: Isoxazole derivatives represented by the formula: ##STR1## wherein R represents hydrogen, alkyl group, or aryl group, R.sup.1 represents hydrogen, or alkyl group, R.sup.2 represents acyl group, a ##STR2## group [R.sup.3 and R.sup.4 each represent hydrogen, alkyl group, alkenyl group, alkynyl group, aralkyl group, aryl group, alkoxy group, or alkylthio group; or optionally R.sup.3 and R.sup.4 are combined with each other directly or indirectly including another hetero atom (nitrogen, oxygen, or sulfur) to form a nitrogen-containing ring], or a --CO--Y--R.sup.5 group [R.sup.Type: GrantFiled: March 15, 1976Date of Patent: December 13, 1977Assignee: Shionogi & Co., Ltd.Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
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Patent number: 4028376Abstract: 3-ALKYLISOXAZOLE DERIVATIVES REPRESENTED BY THE FORMULA: ##STR1## wherein R represents C.sub.3 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl, R.sup.1 represents hydrogen or C.sub.1 -C.sub.6 alkyl, R.sup.2 represents ##STR2## [in which R.sup.3 and R.sup.4 each represent hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.7 alkenyl, C.sub.1 -C.sub.6 alkoxy, C.sub.2 -C.sub.7 alkoxycarbonyl or C.sub.1 -C.sub.6 alkylthio, or ##STR3## represents morpholino, pyrrolidino or piperidino, and Y represents oxygen or sulfur] or --CO--Y--R.sup.5 [in which R.sup.5 represents C.sub.1 -C.sub.6 alkyl and Y is as defined above] and X represents hydrogen, halogen or C.sub.1 -C.sub.6 alkyl, or R and X are combined to form C.sub.3 -C.sub.6 alkylene, being useful as herbicides, are prepared by several routes.Type: GrantFiled: September 23, 1975Date of Patent: June 7, 1977Assignee: Shionogi & Co., Ltd.Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita