Patents by Inventor Carl Ingalls

Carl Ingalls 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: 6368539
    Abstract: A method of utilizing a single engraved embossing roll to emboss different expanses of material with different patterns. The single engraved embossing roll has at least two projections projecting therefrom. A first of the projections projects to a greater height from the roll than a second of the projections. In another aspect, the invention encompasses an apparatus for embossing different expanses of material with different patterns. The apparatus includes an engraved surface having at least two projections projecting therefrom. A first of the projections projects to a greater height than a second of the projections. The apparatus also includes a backing surface configured to receive the projections of the engraved surface. The backing surface and engraved surface are together configured to receive an expanse of material between them.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: April 9, 2002
    Assignee: Potlatch Corporation
    Inventors: Steven H. Greenfield, Carl Ingalls
  • Patent number: D441541
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: May 8, 2001
    Assignee: Potlatch Corporation
    Inventors: Steven H. Greenfield, Carl Ingalls
  • Patent number: D453421
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: February 12, 2002
    Assignee: Potlatch Corporation
    Inventors: Steven H. Greenfield, Carl Ingalls