Patents by Inventor Johan Rapp

Johan Rapp 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).

  • Hearing protector
    Patent number: D668392
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: October 2, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Lars G. E. Carlborg, Johan Rapp, Leif S. Johansson, Martin L. Birath, August H. Michael, Oskar E. Juhlin
  • Hearing protector
    Patent number: D671273
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 20, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Lars G. E. Carlborg, Johan Rapp, Leif S. Johansson, Martin L. Birath, August H. Michael, Oskar E. Juhlin