Patents by Inventor Joachim Adolf Maass

Joachim Adolf Maass 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).

  • Contactless stimulus transducer
    Patent number: 4056097
    Abstract: A contactless stimulus transducer which induces a stimulus current into a living system by means of a changing magnetic field which is produced by an electric field winding on a ferro-magnetic core which consists of two similarly or nearly similarly shaped pole pieces whose lateral boundary surfaces have equidirectional curvatures and whose concave sides face each other.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: November 1, 1977
    Inventor: Joachim Adolf Maass