Patents by Inventor Petrus J. L. C. van Ulden

Petrus J. L. C. van Ulden 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 for manufacturing a tape of photographic slides
    Patent number: 4812347
    Abstract: A method of manufacturing a tape of sequential, framed photographic slide in which at least one side of each frame not containing picture information is removably fixed by an adhesive to a continuous tape which moves rectilinearly in a direction parallel to said side.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: March 14, 1989
    Inventor: Petrus J. L. C. van Ulden