Patents by Inventor Martinus A. C. Lightenberg

Martinus A. C. Lightenberg 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).

  • Luminescent screen having a mosaic structure
    Patent number: RE29956
    Abstract: In a luminescent layer which is composed of spatially separated areas for reduction of lateral light dispersion in the layer, this subdivision is realized by provision of a crack structure in the luminescent layer.This crack structure is realized by thermal treatment of a layer which is provided on a substratum, and can be made optimum by an appropriate choice of the layer thickness, so that deposition in a plurality of sublayers can be advantageous. The crack structure can also be caused by a pattern which is provided in the substratum surface or by means of a gauze which serves as a substratum.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: April 3, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Martinus A. C. Lightenberg, Albert L. N. Stevels, Agnes D. M. De Pauw