Patents by Inventor Erhard Henkes

Erhard Henkes 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).

  • Preparation of indanes
    Patent number: 4740646
    Abstract: Indanes are prepared by reacting substituted or unsubstituted benzyl halides with olefins in the presence of a Lewis acid as catalyst by reacting benzyl halides I ##STR1## (where R.sup.1 and R.sup.2 =hydrogen, alkyl, alkoxy, cycloalkyl, aryl, aryloxy, aralkylR.sup.3 =R.sup.1, halogen or an ortho-fused ring systemX=halogen)with olefins II ##STR2## (where R.sup.4 to R.sup.7 =hydrogen or alkyl unbranched at alpha) in the presence of catalytic amounts of titanium tetrachloride.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: April 26, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Erhard Henkes, Klaus Halbritter, Herbert Mayr, Wilhelm Striepe, Rudolf Pock
  • Oximinophosphoric acid derivatives and their use for controlling pests
    Patent number: 4612306
    Abstract: Oximinophosphoric acid derivatives of the formula I ##STR1## where R.sup.1 is straight-chain or branched alkyl of not more than 4 carbon atoms,R.sup.2 is straight-chain or branched alkoxy or alkylthio, each of not more than 4 carbon atoms, straight-chain or branched alkyl of not more than 3 carbon atoms, phenyl, amino, or straight-chain or branched alkylamino or dialkylamino, where alkyl in each case is of not more than 4 carbon atoms,R.sup.3 is straight-chain or branched alkyl of not more than 4 carbon atoms and X is oxygen or sulfur, their preparation, and their use as crop protection agents.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: September 16, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Burstinghaus, Erhard Henkes, Karl Kiehs, Heinrich Adolphi