Patents by Inventor Wolfgang Fruhstorfer

Wolfgang Fruhstorfer 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
  • Process for the preparation of hydroxyamines
    Patent number: 5023379
    Abstract: A process for the production of hydroxyamines of the formula IR.sup.1 --CH(OH)--CH(NHR.sup.3)--R.sup.2 (I)whereinR.sup.1 and R.sup.2 independently of one another are H or CH.sub.2 OH andR.sup.3 is H, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl comprising reacting an oxo compound with an amine and reducing the resultant ketimine with a reducing agent.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: June 11, 1991
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Ernst Felder, Michael Romer, Hans Bardonner, Hartmut Hartner, Wolfgang Fruhstorfer