Patents by Inventor Noreen J. Pillitteri

Noreen J. Pillitteri 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).

  • Diazotype composition stabilization
    Patent number: 4419432
    Abstract: Caprolactam, caprylolactam, and azacyclooctanone have been found to be equally effective as thiourea in stabilizing diazotype compositions and materials against pre-coupling, loss of shelf life, and dye image fading.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: December 6, 1983
    Assignee: Keuffel & Esser Company
    Inventor: Noreen J. Pillitteri