Patents by Inventor Ulrich Schirmer

Ulrich Schirmer 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).

  • Parabanic acid derivatives
    Patent number: 4283547
    Abstract: New and valuable parabanic acid derivatives having a herbicidal action, herbicides containing these compounds, processes for controlling the growth of unwanted plants with these compounds, and processes for manufacturing these herbicides.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: August 11, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Rainer Becker, Bruno Wuerzer
  • Diurethanes
    Patent number: 4282369
    Abstract: New and valuable diurethanes having a good herbicidal action, herbicides containing these compounds, and a process for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: August 4, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Wolfgang Rohr, Bruno Wuerzer, Kurt Fett
  • Diurethanes
    Patent number: 4227007
    Abstract: New and valuable diurethanes having a good herbicidal action, herbicides containing these compounds, and a process for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: January 13, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Wolfgang Rohr, Bruno Wuerzer, Kurt Fett
  • Bisthiocarbamic acid esters and herbicidal use thereof
    Patent number: 4226613
    Abstract: New diurethanes having a herbicidal action, the urethane radicals being attached to a phenyl radical in meta position and at least one of the urethane radicals containing sulfur; herbicides containing these compounds as active ingredients; processes for the preparation of these compounds; and processes for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: October 7, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Schirmer, Bruno Wuerzer, Wolfgang Rohr
  • Diurethanes
    Patent number: 4131751
    Abstract: New and valuable diurethanes of the formula ##STR1## where R denotes lower alkyl, X/Y denote the combination fluorine/fluorine, fluorine/chlorine or chlorine/fluorine, and processes for controlling the growth of unwanted plants with these compounds.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: December 26, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Koenig, Ulrich Schirmer, Bruno Wuerzer, Kurt Fett
  • 2,1,3-Benzothiadiazines
    Patent number: 4075004
    Abstract: New and valuable substituted 2,1,3-benzothiadiazine compounds having a herbicidal action, herbicides containing these compounds, a method of controlling the growth of unwanted plants with these compounds, and methods for their manufacture.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: February 21, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Hamprecht, Ulrich Schirmer, Bruno Wuerzer, Guenter Retzlaff