Patents by Inventor Charles E. Hoffman

Charles E. Hoffman 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).

  • Apparatus for treating material with a gaseous medium
    Patent number: 4060914
    Abstract: Shown is a baking oven or other gas treating apparatus having a novel gas distribution-box construction for circulation or impingement of a gaseous treating medium around or against goods conducted through the apparatus. The present invention is particularly applicable to the baking of baked goods, but also is applicable to the drying or treating of particulate material or webs of material and has other uses.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: December 6, 1977
    Assignee: Proctor & Schwartz, Inc.
    Inventor: Charles E. Hoffman