Patents by Inventor Dana Mark Duffield

Dana Mark Duffield 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: 5970498
    Abstract: An object oriented framework mechanism provides a straightforward and convenient way to implement metering within an object-oriented computer program for any type of program that needs to be metered. The object metering framework includes core function and extensible function. Core classes and core class relationships define the core function of the framework mechanism. The extensible function is defined by extensible classes that can be extended by a programmer to implement a desired metering environment. The framework provides consistent programmer interfaces over a wide variety of different metering environments, which greatly enhances programmer efficiency and which makes the resultant code much easier to maintain.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: October 19, 1999
    Assignee: International Business Machines Corporation
    Inventors: Dana Mark Duffield, Eric Leonard Fosdick, William Craig Rapp