Patents by Inventor Thor L. Smith

Thor L. 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).

  • Tear resistant ribbon for non-impact printing
    Patent number: 4291994
    Abstract: The present invention is concerned with a ribbon for non-impact printing. The ribbon comprises a transfer coating and a substrate containing resin which is a mixture of from 50% to 90% by weight polycarbonate and from 50% to 10% by weight of a block copolymer of bis-phenol A Carbonate and dimethyl siloxane, and containing from about 15% to about 40% by weight of the resin of electrically conductive carbon black.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: September 29, 1981
    Assignee: International Business Machines Corporation
    Inventors: Thor L. Smith, William J. Weiche
  • Organic fillers for elastomers
    Patent number: 4258146
    Abstract: Organic prepolymer fillers capable of curing and reacting chemically with elastomers to form covalent bonds therewith are mixed with elastomers to form reinforcing domains with diameters of from 0.01 to about 50 microns, and when the mixture is cured, the mechanical strength of the elastomer is increased. In many cases, the thermal stability and/or the hydrolytic stability will also be increased.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: March 24, 1981
    Assignee: International Business Machines Corporation
    Inventors: Richard D. Balanson, James Economy, Samuel J. Huang, Thor L. Smith