Patents by Inventor Roy Smythe Bass, Jr.

Roy Smythe Bass, Jr. 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).

  • Method and system for improving yield of semiconductor integrated circuits
    Patent number: 6507930
    Abstract: A method and system are disclosed for improving a yield of circuits produced from a semiconductor wafer. A plurality of design rules are established for designing a layout of the circuit within the wafer. A yield-limiting set of the plurality of design rules are selected. Adherence to each of the set of rules throughout all of the layout reduces the yield. For each one of the set of rules, a recommended value is determined. A percentage of occasions each one of the set should be exceeded within the layout is also determined. The layout is then designed so that each one of the set of the plurality of design rules meets or exceeds the recommended value more often than the percentage.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: January 14, 2003
    Assignee: International Business Machines Corporation
    Inventors: Roy Smythe Bass, Jr., Stephen Larry Runyon