Patents by Inventor Denis Helm

Denis Helm 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).

  • Ball holder for table tennis table
    Patent number: D950662
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: May 3, 2022
    Assignee: Sponeta GmbH
    Inventor: Denis Helm
  • Tennis table net
    Patent number: D1008388
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: December 19, 2023
    Assignee: Sponeta GmbH
    Inventor: Denis Helm
  • Table tennis table
    Patent number: D1023207
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: April 16, 2024
    Assignee: Sponeta GmbH
    Inventor: Denis Helm