Patents by Inventor Perry C. Dong

Perry C. Dong 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).

  • Stack quality monitoring algorithm
    Patent number: 7404551
    Abstract: An improved method for monitoring stack quality in a finisher of a printer includes examining the net displacement of a compiling tray after each set has been ejected. A deviation from the normal increments of displacement for each set triggers a “tray full” condition which alerts a user to empty the tray.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: July 29, 2008
    Assignee: Xerox Corporation
    Inventors: Robert H. Brown, Raymond M. Ruthenberg, Wayne R. Jordan, Richard Biasutto, Michel Loiselle, Perry C. Dong, Mathieu King
  • Sloped stack detection sensor and algorithm
    Patent number: 7325800
    Abstract: An improved sloped stack detection system for a multi-function finisher includes a reflective sensor which suspends the conveying of stapled sets to an output tray when staple build-up in small stapled sets causes the stacked output to become sloped.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: February 5, 2008
    Assignee: Xerox Corporation
    Inventors: Robert H. Brown, Raymond M. Ruthenberg, Michel Loiselle, Perry C. Dong