Patents by Inventor Richard E. Stahr

Richard E. Stahr 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).

  • Publication number: 20120125711
    Abstract: Disclosed are a sound absorbing panels and a sound absorbing system using such panels, particularly for use in reducing highway and railway noise. The panel includes an enclosure including a first panel face with a number of apertures or holes to allow sound passage, where the ratio of the area of the apertures to the total area of the first panel face is set at a predetermined percentage. The enclosure is configured such that an inner surface of the first panel face is proximate to a fibrous sound absorbing material with an area approximately equal to the total area of the first panel face. The panel enclosure may have various shapes and configurations for optimal sound absorption, and may be configured in a sound absorbing system such that one or more of the panels are mountable to existing structures, such as sound barrier walls in a retrofit manner.
    Type: Application
    Filed: November 25, 2011
    Publication date: May 24, 2012
    Inventor: Richard E. Stahr
  • Patent number: 6447840
    Abstract: A method for creating an intra-laminar matrix within a homogeneous layer enhances the overall structural integrity of a composite layer or layers is disclosed and a composite made thereby. This enhanced structural integrity is provided by reducing and/or eliminating requisite bonds and/or by reducing and/or eliminating heterogeneous layers by rendering them unnecessary in the composite construction formed by the method of the invention.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: September 10, 2002
    Assignee: Cougar Package Designers, Inc.
    Inventors: Bradley K. Starcevich, Richard E. Stahr