Patents by Inventor Henry Edward Pfeiffer

Henry Edward Pfeiffer 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).

  • Prefabricated foam block concrete forms and ties molded therein
    Patent number: 6820384
    Abstract: A foam block concrete form having a pair of opposing foam panels spaced parallel from each other, and retained in opposing fashion by a plurality of transverse ties therebetween. Each panel has opposing longitudinal edges having engaging means formed therealong for removably retaining a longitudinal edge having similar engaging means formed therealong when adjacent thereto. The plurality of substantially planar include a web portion separating a pair of opposing flange members encapsulated within respective opposing foam panels along a respective lateral axis.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: November 23, 2004
    Assignee: Reward Wall Systems, Inc.
    Inventor: Henry Edward Pfeiffer