Patents by Inventor Francine Van Gijsel

Francine Van Gijsel 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).

  • Fusible electrostatically attractable toner
    Patent number: 4478923
    Abstract: A toner composition of electrostatically attractable fusible powder particles suitable for fixing with simultaneous heat and pressure, having a melt viscosity at 140.degree. C. in the range of 10.sup.5 to 10.sup.6 mPa.s, an average particle size in the range of 1 to 50 .mu.m, and comprising a coloring substance and more than 80% of their volume of a mixture of: a combination of fumaric-bisphenolic and fumaric, propoxylated bisphenolic polyester resins, a sterically-hindered phenol release agent, and a melt-viscosity controlling pigment e.g. barium sulphate.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: October 23, 1984
    Assignee: AGFA-Gevaert N.V.
    Inventors: Pierre R. De Roo, Yvan K. Gilliams, Francine Van Gijsel