Patents by Inventor Janet A. De Lu

Janet A. De Lu 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).

  • Development system with methods for visual inheritance and improved object reusability
    Patent number: 5487141
    Abstract: Relational database management system (RDBMS) with an object-based, interactive visual-programming language provides programming by "visual inheritance." A user places screen objects (e.g., boxes, screen buttons, table objects, and the like) on an on-screen window or "form," visually attaches selected "properties" and "methods" to the screen objects, and then establishes an containership-based event model that dictates how and when these properties and methods will be invoked. An object inherits or derives properties and methods from other (parent) objects via its visual containership. The creation and maintenance of application programs is greatly simplified.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: January 23, 1996
    Assignee: Borland International, Inc.
    Inventors: Ronald A. Cain, Janet A. De Lu, Ralph E. Lemke