Patents by Inventor Gerd H. Dahl

Gerd H. Dahl 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).

  • Microencapsulated pyrethroids
    Patent number: 4670246
    Abstract: A sprayable insecticidal composition of low fish toxicity of a mixture in water of microcapsules comprised of a pyrethroid (synthetic pyrethrin) contained within an encapsulating wall of a cross-linked polymeric material, and methods of preparation and method of use of the composition on a wide variety of crops and aquatic sites infested with a broad spectrum of undesirable insects.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: June 2, 1987
    Assignee: Pennwalt Corporation
    Inventors: Gerd H. Dahl, Joseph Simkin