Patents by Inventor Katsuhiro Fujita

Katsuhiro Fujita 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).

  • Isoxazolinone derivatives, process for their preparation and insecticidal and acaricidal compositions containing them
    Patent number: 4579860
    Abstract: Compounds of formula (I): ##STR1## (wherein R.sup.1 represents a hydrogen or halogen atom R.sup.2 represents an alkyl, alkenyl, alkynyl, optionally substituted aralkyl or optionally substituted aryl group and A represents a sulphur atom or a sulphinyl or sulphonyl group) have insecticidal and acaricidal activity and, when formulated in suitable compositions for agricultural or horticultural use, can be used to protect plants from attack by insects or acarids.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: April 1, 1986
    Assignee: Sankyo Company, Limited
    Inventors: Kazuo Tomita, Tadashi Murakami, Hideakira Tsuji, Keigo Matsumoto, Katsuhiro Fujita
  • Mono- and di-thiophosphate esters containing an isoxazolinone ring and compositions and methods containing the same
    Patent number: 4209512
    Abstract: Mono- and di-thiophosphate esters having an isoxazolinone system attached at its 2-position through an optionally alkyl- or phenyl-substituted methylene or ethylene group to the sulphur or to one of the sulphur atoms are useful as insecticides and/or acaricides.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: June 24, 1980
    Assignee: Sankyo Company Limited
    Inventors: Kazuo Tomita, Tadashi Murakami, Hideakira Tsuji, Keigo Matsumoto, Katsuhiro Fujita, Shinji Yokoi