Patents by Inventor Klaas W. De Groot

Klaas W. 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).

  • Patent number: 5391114
    Abstract: Method for the manufacture of a nail element comprising a plate-shaped body and one or more elongate elements whereby in accordance with the invention in each case at least one elongate element is set at an angle relative to the face of the plate-shaped body and brought into contact with it, whereupon heat, for example from electric resistance welding, is generated at the point of contact for melting the material of the elongate element and the plate-shaped body in order to weld these to each other, so that a nail element may be obtained in a simple manner and inexpensively.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: February 21, 1995
    Inventor: Klaas W. De Groot