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).

  • Patent number: 6259325
    Abstract: 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: Grant
    Filed: November 24, 1999
    Date of Patent: July 10, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shin'ichiro Ishizuka, Yasunori Miyahara
  • Patent number: 5082947
    Abstract: 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: Grant
    Filed: June 19, 1990
    Date of Patent: January 21, 1992
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shinzaburo Sumimoto, Ichiro Ishizuka, Shiro Ueda, Hiroyuki Kai
  • Patent number: 4910326
    Abstract: 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: Grant
    Filed: March 10, 1988
    Date of Patent: March 20, 1990
    Assignee: Shionogi & Co., Ltd.
    Inventors: Sumimoto Shinzaburo, Ichiro Ishizuka, Hiroyuki Kai, Shiro Ueda, Akira Takase
  • Patent number: 4888044
    Abstract: 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: Grant
    Filed: August 24, 1987
    Date of Patent: December 19, 1989
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shinzaburo Sumimoto, Ichiro Ishizuka, Shiro Ueda, Hiroyuki Kai, Kinya Ide
  • Patent number: 4797492
    Abstract: 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: Grant
    Filed: October 22, 1986
    Date of Patent: January 10, 1989
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shinzaburo Sumimoto, Ichiro Ishizuka, Hiroyuki Kai, Shiro Ueda, Akira Takase
  • Patent number: 4594203
    Abstract: 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: Grant
    Filed: March 13, 1984
    Date of Patent: June 10, 1986
    Assignee: Toray Industries, Inc.
    Inventors: Satoru Hagiwara, Ichiro Ishizuka, Kazuo Okabe
  • Patent number: 4293328
    Abstract: 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: Grant
    Filed: June 7, 1978
    Date of Patent: October 6, 1981
    Assignee: Shionogi & Co., Ltd.
    Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
  • Patent number: 4256899
    Abstract: 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: Grant
    Filed: October 5, 1979
    Date of Patent: March 17, 1981
    Assignee: Shionogi & Co., Ltd.
    Inventors: Yasuo Makisumi, Akira Murabayashi, Akira Takase, Ichiro Ishizuka, Shinzaburo Sumimoto
  • Patent number: 4212981
    Abstract: 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: Grant
    Filed: November 16, 1977
    Date of Patent: July 15, 1980
    Assignee: Shionogi & Co., Ltd.
    Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
  • Patent number: 4186144
    Abstract: 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: Grant
    Filed: April 17, 1978
    Date of Patent: January 29, 1980
    Assignee: Shionogi & Co., Ltd.
    Inventors: Tsutomu Sugasawa, Tatsuo Toyoda, Kazuyuki Sasakura, Shiro Ueda, Akira Takase, Katsuto Okuno, Ichiro Ishizuka, Shinzaburo Sumimoto
  • Patent number: 4116671
    Abstract: 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: Grant
    Filed: September 23, 1977
    Date of Patent: September 26, 1978
    Assignee: Shionogi & Co., Ltd.
    Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
  • Patent number: 4111680
    Abstract: 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: Grant
    Filed: September 23, 1977
    Date of Patent: September 5, 1978
    Assignee: Shionogi & Co., Ltd.
    Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
  • Patent number: 4062861
    Abstract: 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: Grant
    Filed: March 15, 1976
    Date of Patent: December 13, 1977
    Assignee: Shionogi & Co., Ltd.
    Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita
  • Patent number: 4028376
    Abstract: 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: Grant
    Filed: September 23, 1975
    Date of Patent: June 7, 1977
    Assignee: Shionogi & Co., Ltd.
    Inventors: Hisajiro Yukinaga, Shinzaburo Sumimoto, Ichiro Ishizuka, Jitsuo Sugita