Patents by Inventor Kenji Kodaka

Kenji Kodaka 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: 5264584
    Abstract: Novel dialkoxymethylimidazolidine derivatives of the formula (1) ##STR1## are described. Also, a preparation process of the derivatives and insecticidal compositions comprising the same are set forth.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: November 23, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kenji Kodaka, Katsutoshi Kinoshita, Michihiko Nakaya, Koichi Ebihara, Shirou Shiraishi, Eiichi Yamada, Satoshi Numata
  • Patent number: 5219868
    Abstract: Herein disclosed are novel imidazolidine derivatives of the formula (I) and intermediates of the formula (II) ##STR1## wherein each R represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, a halogen atom, an alkoxy group having from 1 to 6 carbon atoms, a methylenedioxy group, an alkylthio group having from 1 to 4 carbon atoms, a haloalkyl group having from 1 to 2 carbon atoms, a haloalkoxy group having from 1 to 4 carbon atoms, an alkylcarbonyl group having from 1 to 6 carbon atoms, an alkoxycarbonyl.group having from 1 to 6 carbon atoms, a hydroxy group, a cyano group, a nitro group, an alkylamino group having from 1 to 8 carbon atoms, a phenyl group, a phenoxy group, a benzyl group or a halopyridylmethyloxy group, and n is an integer of from 1 to 3, ##STR2## wherein R and n have, respectively, the same meanings as defined above. Processes for preparing the compounds of the formulas (I) and (II) are also described.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: June 15, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kenji Kodaka, Katsutoshi Kinoshita, Michihiko Nakaya, Koichi Ebihara, Shirou Shiraishi, Eiichi Yamada, Satoshi Numata
  • Patent number: 5192778
    Abstract: Novel dialkoxymethylimidazolidine derivatives of the formula (1) ##STR1## are described. Also, a preparation process of the derivatives and insecticidal compositions comprising the same are set forth.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: March 9, 1993
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kenji Kodaka, Katsutoshi Kinoshita, Michihiko Nakaya, Koichi Ebihara, Shirou Shiraishi, Eiichi Yamada, Satoshi Numata
  • Patent number: 5021412
    Abstract: Novel tetrahydro-1,3,5-thiadiazin-4-ones of the following general formula (I) or their salts which are useful as an insecticidal and acaricidal agent. ##STR1## In the formula, each of R.sup.1 and R.sup.2 represents a halogen atom or a C.sub.1 -C.sub.4 alkyl group; R.sup.3 represents a halogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.3 -C.sub.6 cycloalkyl group, a C.sub.1 -C.sub.4 alkoxy group, an acetyl group, a phenoxy group, a halo-substituted phenoxy group, a benzyl group, a benzyloxy group, a phenylcarbonyl group, a C.sub.1 -C.sub.4 haloalkyloxy group, a C.sub.1 -C.sub.4 haloalkyloxymethyl group, a C.sub.2 -C.sub.4 haloalkenyloxy group, a C.sub.1 -C.sub.4 haloalkylthio group, a C.sub.1 -C.sub.4 haloalkylthiomethyl group, a C.sub.2 -C.sub.4 haloalkenylthio group, a C.sub.1 -C.sub.8 haloalkyl group, a C.sub.2 -C.sub.8 haloalkenyl group, a C.sub.1 -C.sub.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: June 4, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Michihiko Nakaya, Yukiharu Fukushi, Kenji Kodaka, Masayuki Ooka, Shirou Shiraishi, Masahiko Nakamura, Satoshi Numata
  • Patent number: 4814340
    Abstract: The present invention relates to novel aromatic alkane derivatives represented by the following general formula (I): ##STR1## wherein Ar stands for a substituted or unsubstituted phenyl or naphtyl group, R.sup.1 stands for a methyl, ethyl or isopropyl group and R.sup.2 stands for a hydrogen atom or a methyl group, or R.sup.1 and R.sup.2 together with the carbon to which they are attached jointly represent a substituted or unsubstituted cycloalkyl group, and R.sup.3 stands for a fundamental group of an alcohol which is usually used in a form of R.sup.3 OH as to natural or synthetic pyrethroids, and also to processes for the preparation of these compounds and the uses of these compounds.These compounds of the present invention have excellent insecticidal and acaricidal activities while the toxicities of these compounds are very low.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: March 21, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Nakatani Kiyoshi, Satoshi Numata, Kenji Kodaka, Kengo Oda, Shiro Shiraishi, Takatoshi Udagawa
  • Patent number: 4782094
    Abstract: A difluorobromomethyoxyphenyl derivative of the general formula ##STR1## wherein A represents an oxygen atom or a methylene group, and Y represents a hydrogen or fluorine atom. A miticide comprising the above derivative as an active ingredient is also provided.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: November 1, 1988
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Satoshi Numata, Kouji Kitajima, Kenji Kodaka, Yukiharu Fukushi, Shiroh Shiraishi, Masahiko Nakamura, Masayuki Ooka
  • Patent number: 4661501
    Abstract: The present invention relates to novel aromatic alkane derivatives represented by the following general formula (I): ##STR1## wherein Ar stands for a substituted or unsubstituted phenyl or naphthyl group, R.sup.1 stands for a methyl, ethyl or isopropyl group and R.sup.2 stands for a hydrogen atom or a methyl group, or R.sup.1 and R.sup.2 together with the carbon to which they are attached jointly represent a substituted or unsubstituted cycloalkyl group and R.sup.3, stands for a fundamental group of an alcohol which is usually used in a form of R.sup.3 OH as to natural or synthetic pyrethroids, and also to the uses of these compounds.These compounds of the present invention have excellent insecticidal and acaricidal activities while the toxicities of these compounds are very low.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: April 28, 1987
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Kiyoshi Nakatani, Satoshi Numata, Kenji Kodaka, Kengo Oda, Shiro Shiraishi, Takatoshi Udagawa
  • Patent number: 4570005
    Abstract: 2-Arylpropyl ether or thioether derivatives represented by the following general formula [I]: ##STR1## wherein Ar stands for an aryl group, R stands for a methyl or ethyl group, Y stands for an oxygen or sulfur atom, and B stands for a group represented by the following formula [II]: ##STR2## or the following general formula [III]: ##STR3## wherein Z stands for an oxygen or sulfur atom or a carbonyl or methylene group, R.sup.1 stands for a hydrogen or halogen atom or a lower alkyl group or a lower alkoxy group, and n is an integer of from 1 to 5 with the proviso that when n is 2 or more, the groups R.sup.1 may be the same or different,are produced by reacting a compound represented by the following formula (V): ##STR4## with a compound represented by the following formula (VI):B--CH.sub.2 --D (VI)wherein Ar, R and B are defined above, A is a halogen atom and D is Y--H in which Y is as defined above,in the presence of a base in dimethylsulfoxide or sulfolane.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: February 11, 1986
    Assignee: Mitsuitoatsu Chemicals Inc.
    Inventors: Kiyoshi Nakatani, Satoshi Numata, Tsuneo Inoue, Kenji Kodaka, Tsutomu Ishii, Teruhiko Toyama, Hajime Tachibana, Takatoshi Udagawa, Masatoshi Gohbara
  • Patent number: 4397864
    Abstract: The present invention relates to 2-arylpropyl ether or thioether derivatives represented by the following general formula [I]: ##STR1## wherein Ar stands for an aryl group, R stands for a methyl or ethyl group, Y stands for an oxygen or sulfur atom, and B stands for a group represented by the following formula [II]: ##STR2## or the following general formula [III]: ##STR3## wherein Z stands for an oxygen or sulfur atom or a carbonyl or methylene group, R.sup.1 stands for a hydrogen or halogen atom or a lower alkyl group or a lower alkoxy group, and n is an integer of from 1 to 5 with the proviso that when n is 2 or more, the groups R.sup.1 may be the same or different, and also to processes for the preparation or these ethers of thioethers and a use of these ethers or thioethers.These compounds of the present invention have excellent insecticidal and acaricidal activities while the toxicity of these compounds are very low.
    Type: Grant
    Filed: April 14, 1981
    Date of Patent: August 9, 1983
    Assignee: Mitsuitoatsu Chemicals Inc.
    Inventors: Kiyoshi Nakatani, Satoshi Numata, Tsuneo Inoue, Kenji Kodaka, Tsutomu Ishii, Teruhiko Toyama, Hajime Tachibana, Takatoshi Udagawa, Masatoshi Gohbara