Patents by Inventor David E. Balke

David E. Balke 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 preparation of methyliminoisobutyrate hydrochloride
    Patent number: 4111976
    Abstract: A process is provided for preparing methyliminoisobutyrate hydrochloride by reacting isobutyronitrile (IBN), hydrogen chloride (HCl) and methanol in the presence of excess HCl, wherein the IBN and HCl are added at a temperature from about 5.degree. C to about 25.degree. C to a methanolic solution containing excess HCl and by maintaining during the reaction a methanolic reaction medium saturated with HCl.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: September 5, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: David E. Balke, Donald E. Perez
  • Continuous process for the production of 2-alkyl or cycloalkyl-4-methyl-6-hydroxy-pyrimidines
    Patent number: 4014879
    Abstract: Production of 2-alkyl or cycloalkyl-4-methyl-6-hydroxy-pyrimidines through a continuous ring closure/neutralization process which increases equipment capacity by a minimum of 45% and yield of about 10% over the usual batch process.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: March 29, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: David E. Balke, Donald E. Perez, Yel S. Sury
  • Pyrimidyl thio- and dithio-phosphoric acid esters
    Patent number: 4012506
    Abstract: Pyrimidyl-thio and dithio-phosphoric acid esters of the formula ##STR1## wherein R.sub.1 represents a C.sub.3 to C.sub.6 cycloalkyl group,R.sub.2 and R.sub.3 each represent a C.sub.1 to C.sub.5 alkyl group andX and Y each represent oxygen or sulfur,Processes for their manufacture, and their use in pest control.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: March 15, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: David E. Balke, Ward H. Oliver