Patents by Inventor Daisuke Fukuoka

Daisuke Fukuoka 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).

  • Aromatic amine derivatives
    Patent number: 5189183
    Abstract: Novel aromatic amine derivatives of specific structure are useful intermediates for herbicides. The aromatic amine compounds have the structure shown by formula [I]: ##STR1## wherein Ar and A are as defined herein.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: February 23, 1993
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Daisuke Fukuoka, Katsuya Takahashi, Isao Hashimoto
  • Process for preparing polyalkyl-2-alkoxy-7-hydroxychroman derivatives
    Patent number: 5072007
    Abstract: Process for preparing polyalkyl-2-alkoxy-7-hydroxychroman derivative of the general formula (V): ##STR1## wherein R.sup.1 denotes lower primary alkyl, R.sup.2 denotes hydrogen or lower primary alkyl and R.sup.3 denotes loweralkyl, by reacting resorcin with either an aliphatic ketone of the general formula (I): ##STR2## wherein R.sup.1 and R.sup.2 are as defined above, and an alcohol of the formula (II):R.sup.3 OH (II)wherein R.sup.3 is as defined above, in the presence of an acid catalyst, or an aliphatic ketone acetal of the general formula (III): ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined above, in the presence of an acid catalyst.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: December 10, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Daisuke Fukuoka, Takeshi Ishitoku, Katsuya Takahashi, Takashi Tashiro, Junichi Imuta, Hiroaki Tan, Masaharu Ishiguro, Noriaki Kihara, Teruaki Mukaiyama
  • Aromatic amine derivatives
    Patent number: 5011950
    Abstract: Novel aromatic amine derivatives of specific structure are useful intermediates for herbicides. The aromatic amine compounds have the structure shown by formula [I]: ##STR1## wherein Ar and A are as defined herein.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: April 30, 1991
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Daisuke Fukuoka, Katsuya Takahashi, Isao Hashimoto
  • Aromatic urea derivatives and their use as herbicide
    Patent number: 4838924
    Abstract: This invention relates to novel compounds of formula [I], a process for their production, and their use as a herbicide. ##STR1## wherein A represents the bond ##STR2## in which X is a hydrogen atom, a chlorine atom, a nitro group or a trifluoromethyl group;B represents a hydrogen atom, a methyl group or a methoxy group; andAr represents one member selected from the group consisting of ##STR3## in which R.sup.1 to R.sup.38, are as defined hereinafter.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: June 13, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tetsuo Takematsu, Daisuke Fukuoka, Katsuya Takahashi, Isao Hashimoto