Patents by Inventor Walter Hangartner

Walter Hangartner 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 propargyl ethers
    Patent number: 4137329
    Abstract: The use of dipropargyl ethers for combatting insects such as aphids, flys and mites including insecticidal compositions for such uses.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: January 30, 1979
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Walter Hangartner, Albert Pfiffner
  • Methylene dioxyphenyl ethers
    Patent number: 4011335
    Abstract: Alkyl or alkenyl ethers of 1,2-methylene dioxy benzene which are useful in combatting insects by interfering with their hormonal system.
    Type: Grant
    Filed: June 5, 1975
    Date of Patent: March 8, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Walter Hangartner, Rene Zurflueh