Patents by Inventor Carl B. Douglas

Carl B. Douglas 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).

  • Transparent static dissipative formulations for coatings
    Patent number: 5631311
    Abstract: Transparent electroconductive coating compositions, methods to prepare such coating compositions, and substrates coated with these coating compositions. The coatings are based on polymeric resins containing finely dispersed electroconductive powders. The coatings can be characterized by the following: thermoformable while retaining transparency and electrical conductivity that is insensitive to humidity; low chloride extractability, stable to exposure to isopropanol or water/soap solutions.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: May 20, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Oswald R. Bergmann, Carol A. Brevett, Carl B. Douglas, Peter C. Szeto