Patents by Inventor Ydo M. Hekkert

Ydo M. Hekkert 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).

  • Valve provided with sound-reducing means
    Patent number: 5261453
    Abstract: A valve provided with sound-reducing means, which sound-reducing means comprise a porous member.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: November 16, 1993
    Assignee: System Engineering and Components International B.V.
    Inventors: Ydo M. Hekkert, Hendrik A. Verduyn
  • Valve provided with sound-reducing means
    Patent number: 5161576
    Abstract: A valve provided with sound-reducing means, which sound-reducing means comprise a porous member.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: November 10, 1992
    Assignee: System Engineering & Components International, B.V.
    Inventors: Ydo M. Hekkert, Hendrik A. Verduyn