Patents by Inventor James D. Hoffman

James D. 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).

  • Patent number: 6675846
    Abstract: The invention discloses a lineal log peeler and debarker that debarks logs for use in home construction automatically by, an operator in a protected control booth. The machine is electronically controlled and replaces the difficult, dangerous and time-consuming operation of hand-peeling such logs with a drawknife. The logs debarked by the machine of this invention can range in length from about 6 to over 50 feet. They can range from about 7 to about 21 inches in diameter and weigh up to about 3000 pounds.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: January 13, 2004
    Inventor: James D. Hoffman
  • Patent number: 4807538
    Abstract: A toy desk unit for organizing learning materials and tools in which a top having a plurality of raised retainer means is provided for retaining the materials and tools. Under the top is provided storage means for much of the same. The top is arranged to be removed without upsetting the learning materials and tools. The raised retainer strips and indentations on the top surface of the toy desk are provided to organize the materials and tools. The desk entices the children to use such material and tools and assists and teaches children to properly organize the same.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: February 28, 1989
    Assignee: School Zone Publishing Company
    Inventor: James D. Hoffman