Patents by Inventor Wallace A. Smith

Wallace A. Smith 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).

  • Composite piezoelectrics utilizing a negative Poisson ratio polymer
    Patent number: 5334903
    Abstract: A piezoelectric composite which can be used as a transducer is constructed of parallel piezoelectric ceramic rods set in a passive polymer matrix which has a negative Poisson ratio whereby the electromechanical coupling of the transducer is greatly increased.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: August 2, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Wallace A. Smith
  • Method for the synthesis of boracites
    Patent number: 4243642
    Abstract: A method of producing boracites is disclosed in which an aqueous mixture of a bivalent metal halide and a group 1a element borate is heated under an inert atmosphere.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: January 6, 1981
    Assignee: North American Philips Corporation
    Inventors: Michaelangelo Delfino, Philip S. Gentile, Gabriel M. Loiacono, Wallace A. Smith