Patents by Inventor Junzo Tobitsuka

Junzo Tobitsuka 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).

  • Fungicidal silicon-containing compounds and their agrochemical and medicinal uses
    Patent number: 5306712
    Abstract: Compounds of formula (I): ##STR1## wherein: A is 1,2,4-triazol-1-yl or imidazol-1-yl; n is 0, 1, 2 or 3; X is halogen, phenyl, alkyl, haloalkyl, alkoxy, or haloalkoxy, or (X).sub.n is alkylenedioxy; R.sup.1 is alkyl or phenyl; and R.sup.2 and R.sup.3 are each alkyl; and salts thereof have valuable anti-fungal activity. Certain intermediates in the preparation of these compounds are also disclosed.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: April 26, 1994
    Assignee: Sanyo Company, Limited
    Inventors: Junzo Tobitsuka, Hideo Takeshiba, Yasuhiko Kondo, Hiroshi Ohta, Shigehiro Kato
  • 13-(substituted thio)acetoxymilbemycin derivatives, their preparation and their agrochemical uses
    Patent number: 5276033
    Abstract: Compounds having the formula (I) ##STR1## wherein: R.sup.1 is methyl, ethyl or isopropyl; R.sup.2 is alkyl, aralkyl, cycloalkyl, cycloalkylmethyl, aryl, heterocyclic, or heterocyclic-substituted thio; R.sup.3 is hydrogen, methyl or ethyl; or R.sup.2 together with R.sup.3 is --(CH.sub.2).sub.n --, wherein n is 3,4 or 5; and A is aromatic heterocyclic; and salts thereof, are valuable agricultural and horticultural anthelmintic, acaricidal and insecticidal agents.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: January 4, 1994
    Assignee: Sankyo Company, Limited
    Inventors: Toshiaki Yanai, Soji Sugai, Hideo Takeshiba, Junzo Tobitsuka, Kazuo Sato, Shinji Yokoi, Shinya Niimi, Akio Saito
  • Oxetane derivatives and their use as anti-fungal or fungicidal agents
    Patent number: 5134152
    Abstract: Compounds of formula (I): ##STR1## [in which: R.sup.1 and R.sup.2 are hydrogen or alkyl, or together are cycloalkyl; R.sup.3 and R.sup.4 are hydrogen, alkyl or phenyl, or together are cycloalkyl; or R.sup.1 and R.sup.3 together are cycloalkyl fused to the oxetane ring; Ar is phenyl substituted by R.sup.5, R.sup.6 and R.sup.7, where R.sup.5, R.sup.6 and R.sup.7 are hydrogen, halogen, alkyl, alkoxy, halogenated alkyl or halogenated alkoxy; and R.sup.8 and R.sup.9 are hydrogen or alkyl] and salts thereof have valuable agricultural and pharmaceutical anti-fungal or fungicidal activity. They may be prepared by a variety of processes.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: July 28, 1992
    Assignee: Sankyo Company, Limited
    Inventors: Hideo Takeshiba, Junzo Tobitsuka, Kazuo Sato, Hisaki Kajino, Hiroyuki Itoh, Yukiyoshi Takahi, Hiroshi Ohta, Sadao Oida, Noriko Takeda, Toshiyuki Konosu, Hiroshi Yasuda
  • Use of isourea derivatives and triazine derivatives in combination with gibberellins as plant growth regulators
    Patent number: 4406687
    Abstract: 1-(hydrocarbylcarbamoyl)-3-(carboxy or hydrocarbyloxycarbonyl)-isoureas and isothioureas and the lactams of the 3-carboxy compounds are useful, in association with a gibberellin (which may be naturally present in a plant), as plant growth regulators.
    Type: Grant
    Filed: August 11, 1981
    Date of Patent: September 27, 1983
    Assignee: Sankyo Company Limited
    Inventors: Kozo Oyamada, Takashi Matsui, Junzo Tobitsuka, Yoshio Yamazaki, Masami Ogawa
  • Use of isourea derivatives and triazine derivatives in combination with gibberellins as plant growth regulators
    Patent number: 4303440
    Abstract: 1-(Hydrocarbylcarbamoyl)-3-(carboxy or hydrocarbyloxycarbonyl)-isoureas and isothioureas and the lactams of the 3-carboxy compounds are useful, in association with a gibberellin (which may be naturally present in a plant), as plant growth regulators.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: December 1, 1981
    Assignee: Sankyo Company Limited
    Inventors: Kozo Oyamada, Takashi Matsui, Junzo Tobitsuka, Yoshio Yamazaki, Masami Ogawa
  • Use of isourea derivatives and triazine derivatives in combination with gibberellins as plant growth regulators
    Patent number: 4211550
    Abstract: 1-(Hydrocarbylcarbamoyl)-3-(carboxy or hydrocarbyloxycarbonyl)-isoureas and isothioureas and the lactams of the 3-carboxy compounds are useful, in association with a gibberellin (which may be naturally present in a plant), as plant growth regulators.
    Type: Grant
    Filed: March 28, 1978
    Date of Patent: July 8, 1980
    Assignee: Sankyo Company Limited
    Inventors: Kozo Oyamada, Takashi Matsui, Junzo Tobitsuka, Yoshio Yamazaki, Masami Ogawa
  • Process for the preparation of 4-benzoylpyrazole derivatives
    Patent number: 4070536
    Abstract: 4-Benzoyl-5-hydroxypyrazole derivatives are prepared by treating 5-benzoyloxypyrazole derivatives with more than 1 equivalent mole of alkaline substance or more than 1 mole of aluminum chloride per mole of the 5-benzoyloxypyrazole derivatives. The desired pyrazole derivatives are useful as a herbicide.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: January 24, 1978
    Assignee: Sankyo Company Limited
    Inventors: Takuo Konotsune, Takashi Matsui, Junzo Tobitsuka