Patents by Inventor Ferdinand H. F. G. Spierings

Ferdinand H. F. G. Spierings 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).

  • Method of making a long narrow opening in a layer of electrically conductive material on a carrier of a synthetic resin material
    Patent number: 4971741
    Abstract: A method of forming a long narrow opening in a layer of electrically conductive material on a carrier of synthetic resin material. A cut, extending into the carrier, is made with a cutting tool having a temperature within the melting range of the material of the carrier. The cutting tool takes the form of a gouge which is disposed at an angle to the plane of the carrier with its concave side facing the carrier. The carrier performs a relative movement relative to the gouge in the direction of the concave side of the gouge.The material removed from the layer of electrically conductive material is picked up by a pick-up device and removed from the gouge in the form of a ribbon.
    Type: Grant
    Filed: July 6, 1988
    Date of Patent: November 20, 1990
    Inventor: Ferdinand H. F. G. Spierings
  • Method of making a line-shaped opening in a coating on a plastics foil
    Patent number: 4225633
    Abstract: A method of applying a line-shaped opening in a coating on a plastics foil, in which a part 3 having a pointed end is moved according to a line 4 in contact with the coating 2, while the temperature of the part 3 lies in the melting range of the foil 1 and the pressure exerted on the part 3 together with the rate of movement of the part 3 is such that the coating 2 with a portion of the subjacent foil 1, considered in thickness direction, is cut through according to the line 4.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: September 30, 1980
    Inventor: Ferdinand H. F. G. Spierings