Patents by Inventor Kaspar F. Burri

Kaspar F. Burri 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).

  • 3,6-Dihydro-2H-1,2-oxazines
    Patent number: 4109086
    Abstract: Dienylphosphates of the formula ##STR1## wherein each of R.sub.1 and R.sub.1' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl,Are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: August 22, 1978
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • O,O-Dialkylphosphoryloxy-2,3,5,8-tetrahydro-1H-s-triazolo[1 ,2a]pyridazine-1,3-diones
    Patent number: 4088645
    Abstract: Dienylphosphates of the formula ##STR1## wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl, are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: May 9, 1978
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • Cyano-4-(0,0-dialkylphosphoryloxy)-cyclohex-4-enes
    Patent number: 4087488
    Abstract: Dienylphosphates of the formula ##STR1## wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower akyl,Are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: May 2, 1978
    Assignee: Hoffman-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • 4-(O,O-Diester phosphoryloxy)cyclohex-4-en-1,2-carboxylic anhydrides
    Patent number: 4077985
    Abstract: Dienylphosphates of the formula ##STR1## wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl,Are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: March 7, 1978
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • 1-Acetyl-3(4)-(dihydrocarbylphosphoryloxy)-cyclohex-3-enes
    Patent number: 4025584
    Abstract: Dienylphosphates of the formula ##STR1## wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl,Are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: May 24, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • Process for the preparation of dienylphosphates
    Patent number: 3978171
    Abstract: Dienylphosphates of the formula ##SPC1##Wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl,Are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: August 31, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • Process for the preparation of dienylphosphates
    Patent number: 3978172
    Abstract: Dienylphosphates of the formula ##SPC1##Wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2, R.sub.3 and R.sub.4 is hydrogen or lower alkyl, are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: August 31, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen
  • Dienylphosphates
    Patent number: 3933948
    Abstract: Dienylphosphates of the formula ##SPC1##Wherein each of R.sub.1 and R.sub.1 ' is lower alkyl, aryl or benzyl and each of R.sub.2,R.sub.3 and R.sub.4 is hydrogen or lower alkyl,Are useful as anthelmintic agents and as intermediates for enolphosphates having anthelmintic activity.
    Type: Grant
    Filed: August 15, 1974
    Date of Patent: January 20, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kaspar F. Burri, Frank Kienzle, Perry Rosen