Patents by Inventor Cornelis J. Oepkes

Cornelis J. Oepkes 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).

  • Audio or video apparatus with a built-in loudspeaker
    Patent number: 5471018
    Abstract: An audio or video apparatus has a housing, a loud-speaker and an acoustic channel. The loud-speaker acoustically cooperates with the channel. One end of the channel opens into an aperture in a side of the apparatus. The dimensions of the loud-speaker and acoustic channel and the positioning thereof within the housing are chosen so as to provide an apparatus that is compact and at the same time produces improved audio reproduction.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: November 28, 1995
    Assignee: U.S. Philips Corporation
    Inventors: Joris A. M. Nieuwendijk, Johannes W. T. Bax, Cornelis J. Oepkes, Henricus H. Roelofs, Martinus P. M. Van Den Thillart