Patents by Inventor Elizabeth C. Bell

Elizabeth C. Bell 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).

  • Primerless latex paint with tannin blocking
    Patent number: 6531223
    Abstract: A water based coating composition which does not require a primer for application over wood, masonry, metal, vinyl siding and previously painted surfaces and can be applied over these surfaces in a single coat to provide the tannin blocking, hiding, corrosion resistance and durability of a conventional primer plus two coats of latex paint.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: March 11, 2003
    Assignee: The Sherwin-Williams Company
    Inventors: Darlene D. Rota, Lorette Madigan, Elizabeth C. Bell, Robert A. Martuch
  • Primerless latex paint
    Patent number: 6218012
    Abstract: A water based coating composition which does not require a primer for application over wood, masonry, metal, vinyl siding and previously painted surfaces and can be applied over these surfaces in a single coat to provide the tannin blocking, hiding, corrosion resistance and durability of a conventional primer plus two coats of latex paint.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: April 17, 2001
    Assignee: The Sherwin-Williams Company
    Inventors: Darlene D. Rota, Lorette Madigan, Elizabeth C. Bell, Robert A. Martuch