Patents by Inventor Johan J. Lamotte

Johan J. Lamotte 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).

  • Silver salt diffusing transfer material with light insensitive silver salt layer
    Patent number: 5308738
    Abstract: The present invention provides a photographic material comprising on a support an image-receiving layer containing physical development nuclei, a photosensitive silver halide emulsion layer and a substantially light insensitive layer containing silver salt characterized in that said photosensitive silver halide emulsion layer contains silver halide particles having an average diameter of at least 0.6 .mu.m, said photosensitive silver halide emulsion layer being located between said image-receiving layer and said substantially light insensitive layer and said substantially light insensitive layer having a speed of at least a factor 10 less than said photosensitive silver halide emulsion layer. The present invention also provides a method for making an image therewith. The photographic material of the present invention is of high speed and can yield direct positive image with a low density in the non-image areas.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: May 3, 1994
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Rene M. De Keyzer, Johan J. Lamotte