Patents by Inventor Lourens Wals

Lourens Wals 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).

  • Imidazole derivatives
    Patent number: 5000777
    Abstract: 1,5-substituted imidazole derivatives of formula I ##STR1## the stereochemically isomeric forms thereof, and the salts thereof, have useful herbicidal properties. The substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, X.sup.1, X.sup.2, X.sup.3, A, L and m have the meanings defined herein.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: March 19, 1991
    Assignees: Ciba-Geigy Corporation, Janssen Pharmaceutica
    Inventors: Henry Szczepanski, Lourens Wals
  • Herbicidal imidazole derivatives
    Patent number: 4898607
    Abstract: 1,5-substituted imidazole derivatives of formula I ##STR1## the stereochemically isomeric forms thereof, and the salts thereof, have useful herbicidal properties. The substituents R.sup.1, R.sup.2, R.sup.3, R.sup.4, X.sup.1, X.sup.2, X.sup.3, A, L and m have the meanings defined herein.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: February 6, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Henry Szczepanski, Lourens Wals
  • .alpha.,.alpha.-Diaryl-4-aryl-4-hydroxyl-1-piperidinebutanamide, N-oxides and pharmaceutical use
    Patent number: 4898873
    Abstract: Antidiarrheal active .alpha.,.alpha.-diaryl-4-aryl-4-hydroxy-1-piperidinebutanamide, N-oxides, compositions containing the same and methods of treating diarrhea.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: February 6, 1990
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Lourens Wals, Ludwig P. Cooymans
  • .alpha.,.alpha.-diaryl-4-aryl-4-hydroxy-1-piperidinebutanamide, N-oxides and method of treating diarrhea
    Patent number: 4824853
    Abstract: Antidiarrheal active .alpha.,.alpha.-diaryl-4-aryl-4-hydroxy-1-piperidinebutanamide, N-oxides, compositions containing the same and methods of treating diarrhea.
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: April 25, 1989
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Lourens Wals, Ludwig P. Cooymans
  • Antimicrobial and plant-growth-regulating triazole derivatives
    Patent number: 4160838
    Abstract: Novel 1-(.beta.-aryl)ethyl-1H-1,2,4-triazole ketals useful for their antimicrobial and plant-growth regulating activities.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: July 10, 1979
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Gustaaf Van Reet, Jan Heeres, Lourens Wals
  • Triazole derivatives
    Patent number: 4079062
    Abstract: Novel 1-(.beta.-aryl)ethyl-1H-1,2,4-triazole ketals useful for their antimicrobial and plant-growth regulating activities.
    Type: Grant
    Filed: October 9, 1975
    Date of Patent: March 14, 1978
    Assignee: Janssen Pharmaceutica N.V.
    Inventors: Gustaaf Van Reet, Jan Heeres, Lourens Wals