Patents by Inventor Koch H. John

Koch H. John 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).

  • Paper decurler for uneven curl profile
    Patent number: 6666809
    Abstract: A method and apparatus are disclosed for reducing or eliminating the precurl in a web of paper. The apparatus includes a decurler which may operate in conjunction with a lead in roll and a bowed roll. Motions are provided to the lead in roll and decurler so that the wrap of the web on the bowed roll remains essentially unaffected by the movement of the decurler into and out of the web. One of the above apparatus or a lead out roll may be skewed to address uneven cross machine curl profile, while the bowed roll addresses baggyness and the decurler, of course curl.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: December 23, 2003
    Assignee: Stora Enso North America Corp.
    Inventor: Koch H. John