Patents by Inventor Cornelis H. Christiaans

Cornelis H. Christiaans 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).

  • Head rest for vehicle seats
    Patent number: D398793
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: September 29, 1998
    Assignee: Johannes Theodorus Marie Rasenberg
    Inventors: Geoff Maree, Cornelis H. Christiaans
  • Conversion apparatus
    Patent number: D429273
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: August 8, 2000
    Inventors: Josephus E. M. Maree, Cornelis H. Christiaans, Markus J. Lambregts