Patents by Inventor Errol L. Johnson

Errol L. Johnson 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).

  • Installation of window frames and door frames of synthetic resinous material in concrete
    Publication number: 20030172601
    Abstract: A concrete for assembly and methodology by which instable window and door frames, placed within but not directly connected to a concrete form, are caused to be stable, position secured and sealed during a concrete pour.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 18, 2003
    Inventors: Aaron L. Johnson, Errol L. Johnson