Patents by Inventor Lance Jeffrey Purple

Lance Jeffrey Purple 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).

  • System and method for implemeting canvas objects on windowing computer systems
    Patent number: 5806080
    Abstract: A separate window is provided for each of multiple OpenDoc Canvas objects, thereby effecting a multiple Canvas-per-compound document design. Possibility of one OpenDoc object drawing in another object's screen area is eliminated by clipping imposed by the Xserver on a perwindow basis. Multiple different X-rendering libraries may be employed for screen imaging. The raw XWindow may be used for direct Xlib drawing functions and other rendering toolkits. Widgets associated with alternative graphical user interfaces may be used as the root of a widget hierarchy.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: September 8, 1998
    Assignee: International Business Machines Corporation
    Inventors: Lance Jeffrey Purple, Leigh Allen Williamson, Ching-Yun Yang