Patents by Inventor Liau Chun-Eng

Liau Chun-Eng 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).

  • Cyclopropanecarboxylates, their production and insecticide containing them as an active ingredient
    Patent number: 4496586
    Abstract: The present invention relates to carboxylic acid esters of the formula (I), ##STR1## wherein R.sub.1 is a hydrogen atom or a methyl group, and when R.sub.1 is a hydrogen atom, R.sub.2 is a group of the formula, ##STR2## (in which X is a methyl group, a chlorine, bromine or fluorine atom), and when R.sub.1 is a methyl group, R.sub.2 is a methyl group; and Y is a 1-methyl-2-propenyl, 1-methyl-2-propynyl, 2-cyclopentenyl or 2-cyclohexenyl group, and their production and use as an insecticide.
    Type: Grant
    Filed: October 20, 1983
    Date of Patent: January 29, 1985
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masanao Matsui, Liau Chun-Eng, Kunio Kogami, Toshihiko Yano, Noritada Matsuo