Patents by Inventor Ruy Alberto Altafi

Ruy Alberto Altafi 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).

  • Ferroeletret multilayer composite and method for producing a ferroelectret multilayer composite with parallel tubular channels
    Patent number: 8446080
    Abstract: The present invention relates to a ferroelectret multi-layer composite (1) comprising at least two polymer films arranged one on top of the other and bonded together, wherein voids are formed between the polymer films, said voids being tubular channels, particularly running parallel to one another. The invention further provides a process for the production of a ferroelectret multi-layer composite with parallel tubular channels, and a device for carrying out the process for the production of the ferroelectret multi-layer composite according to the invention. In addition, the invention relates to a piezoelectric element containing a ferroelectret multi-layer composite according to the invention.
    Type: Grant
    Filed: November 28, 2009
    Date of Patent: May 21, 2013
    Assignee: Bayer MaterialScience AG
    Inventors: Werner Jenninger, Joachim Wagner, Reimund Gerhard, Ruy Alberto Altafi, Werner Wirges
  • FERROELETRET MULTILAYER COMPOSITE AND METHOD FOR PRODUCING A FERROELECTRET MULTILAYER COMPOSITE WITH PARALLEL TUBULAR CHANNELS
    Publication number: 20110234056
    Abstract: The present invention relates to a ferroelectret multi-layer composite (1) comprising at least two polymer films arranged one on top of the other and bonded together, wherein voids are formed between the polymer films, said voids being tubular channels, particularly running parallel to one another. The invention further provides a process for the production of a ferroelectret multi-layer composite with parallel tubular channels, and a device for carrying out the process for the production of the ferroelectret multi-layer composite according to the invention. In addition, the invention relates to a piezoelectric element containing a ferroelectret multi-layer composite according to the invention.
    Type: Application
    Filed: November 28, 2009
    Publication date: September 29, 2011
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Werner Jenninger, Joachim Wagner, Reimund Gerhard, Ruy Alberto Altafi, Werner Wirges