Patents by Inventor Guenter Helke

Guenter Helke 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).

  • High-performance piezoelectric ceramic
    Patent number: 6692651
    Abstract: The invention relates to piezoelectric ceramic materials consisting of lead zirconate titanate and (1) at least one of an alkaline earth pyrochlore and an alkali metal perovskite having the formula AB5+O3, where B is Nb, Ta, or Sb; or (2) an alkaline earth alkali metal perovskite having the formula A(T1+0.25B5+0.75)O3, where A is the alkaline earth metal, T is the alkali metal, and B is Nb, Ta, or Sb. The materials are characterized by excellent heat and time stability.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: February 17, 2004
    Assignee: Leramtec AG Innovative Ceramic Engineering
    Inventor: Guenter Helke
  • HIGH-PERFORMANCE PIEZOELECTRIC CERAMIC
    Publication number: 20020190237
    Abstract: The Invention relates to piezoelectric ceramic materials with a base consisting of lead zirconate titanate. Said materials are characterised by the excellent heat- and time-stability of the functional characteristics.
    Type: Application
    Filed: February 18, 2000
    Publication date: December 19, 2002
    Inventor: GUENTER HELKE