Patents by Inventor Keizaburo Murai

Keizaburo Murai 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).

  • Pyrazole derivatives and insecticidal compositions containing the derivative as active component
    Patent number: 5739083
    Abstract: A pyrazole derivative represented by the formula (1) is low in toxicity and persistence and yet has an extremely high insecticidal efficacy ##STR1## wherein A is CH, N or C-halogen atom, R.sup.1 is hydrogen atom, lower alkyl, lower haloalkyl, benzyl or phenyl, R.sup.2 is lower alkyl, lower haloalkyl, lower alkenyl, lower alkynyl, benzyl or phenyl, R.sup.3 is hydrogen atom, a halogen atom lower alkyl, lower haloalkylthio, phenyl, cyano, nitro or amino, R.sup.4 is halogen atom, R.sup.5 is lower haloalkyl, R.sup.6 is hydrogen atom, lower alkyl, lower haloalkyl or benzyl, R.sup.1 and R.sup.6 being not hydrogen atoms at the same time, l is 0 or 1, m is 0 or 1 and n is a number of 0 to 2.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: April 14, 1998
    Assignee: Otsuka Kagaku Kabushiki Kaisha
    Inventors: Yoshinori Endo, Hiroshi Fujishima, Keizaburo Murai, Tetsuji Miyata, Shigekazu Wakisaka, Yasuhiro Sasama
  • Insecticidal and acaricidal composition
    Patent number: 5476869
    Abstract: An insecticidal and acaricidal composition comprising, as active ingredients,(a) .alpha.-cyano-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate and(b) ethyl (Z)--H-benzyl-N-[{methyl(1-methylthioethylideneamino-oxycarbonyl)amino}thi o]-.beta.-alaninate, and a method of controlling insects and acarines by applying said composition to sites where insects and acarines inhabit.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: December 19, 1995
    Assignees: Sumitomo Chemical Company, Limited, Otsuka Chemical Company, Ltd.
    Inventors: Keizaburo Murai, Satoshi Nakamura