Patents by Inventor Bernard P. Laurent

Bernard P. Laurent 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: 4142242
    Abstract: Multiplier accumulator device for performing the algebraic sum .SIGMA. .+-. A.sub.i B.sub.i of products of n-bit operands expressed in two's complement form. The accumulator is divided in two n-position halves, and the rightmost position of the accumulator is linked to the leftmost position. The product partial sums are alternately accumulated into the left and right halves in such a manner that partial products of like weight are added together. Each position of the accumulator is an adding cell except the leftmost positions of the right and left parts which are subtractive cells.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: February 27, 1979
    Assignee: International Business Machines Corporation
    Inventors: Henri P. Duvochel, Roland E. Kuhne, Bernard P. Laurent