Patents by Inventor Jan Cornelis de Groot

Jan Cornelis de Groot 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).

  • Coat hanger, method for manufacturing a coat hanger and metal hook for a coat hanger
    Publication number: 20050067445
    Abstract: Coat hanger made of plastic 81), provided with a steel hook (4). The steel hook (4) can be rotated inside the plastic (1), without deteriorating the plastic (1). Between the hook (4) and the platic (1) a well-defined frictional torque is present, due to which a previously determined torque is necessary for turning the hook (4). The friction is realised by deforming the pin-shaped part (7) of the hook (4) which is situated inside the plastic (1).
    Type: Application
    Filed: October 15, 2004
    Publication date: March 31, 2005
    Applicant: MAINETTI BV
    Inventor: Jan Cornelis De Groot
  • Foldable clothes hanger
    Patent number: D518653
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 11, 2006
    Inventor: Jan Cornelis de Groot