Patents by Inventor Rolf Berkner

Rolf Berkner 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).

  • Electrically insulating encapsulating composition for semiconductor devices
    Patent number: 3931026
    Abstract: An electrically insulating composition adapted for the encapsulation of a miconductor body and for protecting the semiconductor surface against harmful impurities, comprising a mixture of a polymerizable organic resin, at least one filler which improves the electrical properties of the semiconductor body, and at least one organic chelating agent capable of binding undesirable impurities in said resin and in said filler.
    Type: Grant
    Filed: December 22, 1972
    Date of Patent: January 6, 1976
    Assignee: Semikron Gesellschaft fur Gleichrichterbau und Elektronik m.b.H.
    Inventor: Rolf Berkner