Patents by Inventor Manfred Garrecht

Manfred Garrecht 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).

  • Certain glyoxyl-cyclohexendiones as herbicides
    Patent number: 5131945
    Abstract: Compounds of formula I ##STR1## are useful as herbicides, effective against dicotyledonous weeds.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: July 21, 1992
    Assignee: Shell Research Limited
    Inventors: Hans-Joachim Bissinger, Ludwig Schoeder, Helmut Baltruschat, Manfred Garrecht, Erich Raddatz, Wolfgang Fruhstorfer
  • Herbicidal imidazolinones
    Patent number: 4723989
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.9 and R.sub.10 have diverse meanings. They are useful as herbicides.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: February 9, 1988
    Assignee: Celarmerck GmbH & Co. KG
    Inventors: Wolfgang Buck, Manfred Garrecht, Gerhart Schneider, Christo Drandarevski