Patents Assigned to HP-CHEMIE PLELZER RESEARCH AND DEVELOPMENT LTD.
  • Floor covering having a strong noise-reducing properties
    Publication number: 20070298215
    Abstract: A floor covering with strong noise-reducing properties for the interior trim of means of transport having on the passenger side a textile or non-textile surface, acoustically coupled through at least one microperforated sheet to a fibrous non-woven and/or foamed plastic. A microperforated sheet having a hole diameter from 0.2 to 0.5 mm and an interhole distance from 3 to 7 mm.
    Type: Application
    Filed: June 27, 2007
    Publication date: December 27, 2007
    Applicant: HP-CHEMIE PLELZER RESEARCH AND DEVELOPMENT LTD.
    Inventors: Norbert Nicolai, Volkmar Schulze