Patents by Inventor Herbert Muhle

Herbert Muhle 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).

  • Process for the isomerization of ergovine derivatives
    Patent number: 4515950
    Abstract: The invention concerns a process for the isomerization of ergoline derivatives substituted in the 8.beta. position by an electron withdrawing radical to the corresponding 8.alpha. compounds by removal of the proton in the 8.alpha. position and by a following, separately effected, protonation.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: May 7, 1985
    Assignee: Sandoz Ltd.
    Inventors: Zdenek Brich, Herbert Muhle
  • Pesticidal pyrimidinyl phosphorus esters
    Patent number: 4045561
    Abstract: The present invention concerns novel pyrimidinyl phosphoric and thiophosphoric esters. ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are substituents, e.g. alkyl,R.sub.4 is an amino or heterocyclic function andZ and Y are bridging functions, e.g. oxygen.The compounds are useful insecticides.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: August 30, 1977
    Assignee: Sandoz Ltd.
    Inventors: Herbert Muhle, Karlheinz Milzner, Fritz Reisser
  • Substituted 6-hydroxy pyrimidines
    Patent number: 3931180
    Abstract: The present invention concerns novel 4-hydroxypyrimidine derivatives of the formula: ##SPC1##Wherein R.sub.1 is a substituent, e.g., alkyl, R.sub.2 is hydrogen or a substituent, e.g., alkyl R.sub.3 is amino unsubstituted or substituted by alkyl, a nitrogen heterocycle, alkoxy or alkylthio, which are used as intermediates in the production of useful insecticides.
    Type: Grant
    Filed: March 19, 1974
    Date of Patent: January 6, 1976
    Assignee: Sandoz Ltd., (Sandoz AG)
    Inventors: Herbert Muhle, Karlheinz Milzner, Fritz Reisser