Patents by Inventor Karl M. Brinkman

Karl M. Brinkman 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).

  • Alkyl salicylate developer resin for carbonless copy paper and imaging use
    Patent number: 5017546
    Abstract: Phenol/aldehyde condensation products useful in the development of colored images from colorless dyes are disclosed. The phenol/aldehyde condensation products are produced by the interaction of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde, and a metal source. The phenol/aldehyde condensation products are particularly useful in a photosensitive imaging system in which images are formed by the image-wise reaction of the developer with one or more chromogenic materials, and in carbonless copy paper systems.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: May 21, 1991
    Inventors: Karl M. Brinkman, John L. Sullivan, David R. Hanley