Patents by Inventor Colm Doris

Colm Doris 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).

  • Sound absorbers
    Patent number: 7137477
    Abstract: The present invention relates to a sound absorber consisting of a first non-woven fabric facing towards the sound-emitting source having a layer thickness within a range of from 2 to 15 mm, a density within a range of from 50 to 500 kg/m3, a weight per surface area within a range of from 0.1 to 2.5 kg/m2, and a flow resistance within a range of from 50 to 1000 kNs/m4, and a second non-woven fabric facing away from the sound-emitting source has a layer thickness within a range of from 10 to 28 mm, a density within a range of from 20 to 100 kg/m3, a weight per surface area within a range of from 0.4 to 1 kg/m2, and a flow resistance within a range of from 10 to 40 kNs/m4.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: November 21, 2006
    Assignee: Clion Ireland Holding Ltd.
    Inventors: Hans-Peter Keller, Marco Schneider, Olaf Dohring, Rod Morris-Kirby, Norbert Nicolai, Colm Doris
  • Sound absorbers
    Publication number: 20040238275
    Abstract: The present invention relates to a sound absorber consisting of two interconnected non-woven fabrics (1,2) bonded through thermoplastic and/or thermoset materials, wherein the non-woven fabric (1) facing towards the sound-emitting source has a layer thickness within a range of from 2 to 15 mm, a density within a range of from 50 to 500 kg/m3, a weight per surface area within a range of from 0.1 to 5 kg/m2, and a flow resistance within a range of from 50 to 1000 kNs/m4, and the non-woven fabric (2) facing away from the sound-emitting source has a layer thickness within a range of from 10 to 100 mm, a density within a range of from 20 to 100 kg/m3, a weight per surface area within a range of from 0.5 to 1 kg/m2, and a flow resistance within a range of from 10 to 40 kNs/m4, with a total thickness of the sound absorber within a range of from 12 to 30 mm and a total weight per surface area of the sound absorber within a range of from 0.5 to 3 kg/m2.
    Type: Application
    Filed: December 29, 2003
    Publication date: December 2, 2004
    Inventors: Hans-Peter Keller, Marco Schneider, Olaf Dohring, Rod Morris-Kirby, Norbert Nicolai, Colm Doris
  • Apparatus and method for discontinuous manufacture of shaped composite article
    Patent number: 6024905
    Abstract: The present invention describes a device for the discontinuous manufacture of shaped composite articles and an appropriate process.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: February 15, 2000
    Assignee: HP-Chemie Pelzer Research & Development LTD
    Inventor: Colm Doris