Patents by Inventor Leonard Stach

Leonard Stach 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).

  • 2-[4-(2-pyridinyloxy)phenoxy]propionyl-2-oxazolidinones
    Patent number: 4775410
    Abstract: The subject matter of this invention involves 2-[4-(2-pyridinyloxy)phenoxy]propionyl-2-oxazolidinones which are substituted in the pyridinyl ring by trifluoromethyl and/or chloro. The compounds are useful for increasing the recoverable sugar in sugarcane.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: October 4, 1988
    Assignee: Sandoz Ltd.
    Inventors: Louis G. Nickell, Leonard Stach, Takeo Hokama