Patents by Inventor Carol E. Clark

Carol E. Clark 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).

  • Linkage mechanism for program isolation
    Patent number: 5220669
    Abstract: A computer system has general purpose registers, control registers and access registers for containing information to allow address space capability. A linkage stack uses protected address space to store state information during program call and program return operations. The linkage stack contains information relating to state entries for the saved information and header and trailer entries to point to other linkage stack sections. A control register contains the pointer to the current linkage stack entry and is changed as the program call or return moves through the stack.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: June 15, 1993
    Assignee: International Business Machines Corporation
    Inventors: Richard I. Baum, Terry L. Borden, Carol E. Clark, Alan G. Ganek, James Lum, Michael G. Mall, Casper A. Scalzi, Richard J. Schmalz