Patents by Inventor James C. Seastone

James C. Seastone 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).

  • Tubing for energy absorbing structures
    Patent number: 4799971
    Abstract: Tubing for energy absorbing structures such as automotive door beams: The tubing is heated, quenched, reheated and cold rolled to final diameter. The tubing may be of a ferrous alloy containing C--0.21 to 0.30; Mn--1.00 to 1.50; P--0.035 max.; S--0.040 max.; Si--0.15 to 0.35; Mo--0.08 to 0.25; Al--0.020 min.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: January 24, 1989
    Assignee: Copperweld Corporation
    Inventors: Wallace R. McDougall, James C. Seastone