Patents by Inventor Jerry Leon Curtis

Jerry Leon Curtis 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).

  • Cationized pigments and their use in papermaking
    Patent number: 5650003
    Abstract: A pigment composition containing titanium dioxide (TiO.sub.2) and calcined clay in a weight ratio of between about 30:70 and 70:30, preferably between about 35:65 and 45:55 that is substantially free of a functional microgel component has advantages over a similar pigment containing a functional microgel. The pigment composition contains an amount of epichlorohydrin dimethylamine condensate that is sufficient to cationize the pigment, and lacks a microgel component. It is liquid when agitated. Preferably the composition has a solids content greater than about 55%, and most preferably between about 59% and about 61%.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: July 22, 1997
    Assignee: Nord Naolin Company
    Inventors: Jerry Leon Curtis, Lester William House