Patents by Inventor David Winsen

David Winsen 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).

  • DEVICES AND METHODS FOR SEPARATING CONTACTING SURFACES
    Publication number: 20170265600
    Abstract: The present technology is directed to tools and methods for separating contacting surfaces, as in the case of a keychain, for ease of adding and removing a small personal item such as a key, from between the contacting surfaces.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 21, 2017
    Inventor: David Winsen
  • Key chain opener
    Patent number: D798681
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: October 3, 2017
    Inventor: David Winsen