Patents by Inventor Marian N. Howell

Marian N. Howell 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).

  • Paint brushes with multiple stiffness bristles
    Patent number: 5220702
    Abstract: A watercolor brush, used to draw fine lines wherein the core of this brush is composed of short thick sable hairs with long stiff bristles dispersed therein and the outer surrounding portion of this brush is composed of long fine sable hairs. An oil/acrylic flat brush used to draw straight lines wherein the brush is composed of stiff hair such as badger or horse hair at one end of the flat brush with the remaining bristles adjacent thereto being sable.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: June 22, 1993
    Inventors: Marian N. Howell, Mary M. Penner