Patents Assigned to Deamp AS
  • Sound absorbent
    Patent number: 7677359
    Abstract: Sound absorbent (1) of a hard material, such as metal, glass, hard plastic or composites thereof, for absorption of acoustic waves by friction of viscous flow, essentially in the frequency range between 100 and 4000 Hz. The sound absorbent (1) comprises a panel element (3) with microslits (5) therethrough, said microslits (5) having a minimum slit width (b) of less than 0.45 mm. When in use, the panel element (3) is arranged with a distance to a rear surface.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: March 16, 2010
    Assignee: Deamp AS
    Inventors: Tor Erik Vigran, Odd Petersen
  • Sound Absorbent
    Publication number: 20080264720
    Abstract: Sound absorbent (1) of a hard material, such as metal, glass, hard plastic or composites thereof, for absorption of acoustic waves by friction of viscous flow, essentially in the frequency range between 100 and 4000 Hz. The sound absorbent (1) comprises a panel element (3) with microslits (5) therethrough, said microslits (5) having a minimum slit width (b) of less than 0.45 mm. When in use, the panel element (3) is arranged with a distance to a rear surface.
    Type: Application
    Filed: March 23, 2006
    Publication date: October 30, 2008
    Applicant: DeAmp AS
    Inventors: Tor Erik Vigran, Odd Petersen