Patents by Inventor Willy D. Kollmeyer

Willy D. Kollmeyer 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).

  • Insecticidal 1-acyl-3-substituted-2-(nitro(phenylthio)-methylene)imidazolidines
    Patent number: 3996372
    Abstract: Insecticidal 1-acyl-3-substituted-2-(nitro(phenylthio)methylene)imidazolidines.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: December 7, 1976
    Assignee: Shell Oil Company
    Inventor: Willy D. Kollmeyer
  • 2-(Nitromethylene)-1,3-diazepines
    Patent number: 3971774
    Abstract: Novel insecticidal 2-(nitromethylene)-1,3-diazacycloalkanes.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: July 27, 1976
    Assignee: Shell Oil Company
    Inventors: Charles H. Tieman, Willy D. Kollmeyer, Steven A. Roman
  • 2-(Nitromethylene)-hexahydropyrimidines
    Patent number: 3969354
    Abstract: Novel insecticidal 2-(nitromethylene)-1,3-diazacycloalkanes.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: July 13, 1976
    Assignee: Shell Oil Company
    Inventors: Charles H. Tieman, Willy D. Kollmeyer, Steven A. Roman
  • 2-(Nitromethylene)-1,3-diazacycloalkane insect control agents
    Patent number: 3948934
    Abstract: Insectidal 2-(nitromethylene)-1,3-diazacycloalkanes are disclosed.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: April 6, 1976
    Assignee: Shell Oil Company
    Inventors: Charles H. Tieman, Willy D. Kollmeyer, Steven A. Roman