Patents by Inventor Walborg Thorsell

Walborg Thorsell 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).

  • Patent number: 4192892
    Abstract: Aromatic .alpha.-hydroxyamides are disclosed, which are useful as active components in insect repellent compositions. Suitable compounds are derivatives of mandelic acid amide, such as N,N-diethyl-D,L-mandelic acid amide.
    Type: Grant
    Filed: July 19, 1978
    Date of Patent: March 11, 1980
    Inventors: Walborg Thorsell, Maarja Mikiver, Elisabeth Malm, Lennart Wennberg