Patents by Inventor Christopher R. KILLMORE

Christopher R. KILLMORE 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).

  • Nitriding of niobium steel and product made thereby
    Patent number: 11193188
    Abstract: A nitrided steel product or thin cast steel strip comprising, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, niobium between 0.01 and about 0.20%, and between 0.01 and 0.075% nitrogen, and having a majority of the microstructure comprised of bainite and acicular ferrite, having more than 70% niobium in solid solution prior to nitriding and having yield strength between 650 MPa and 800 MPa and tensile strength between 750 MPa and 900 MPa.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: December 7, 2021
    Assignee: Nucor Corporation
    Inventors: Yuxuan Xie, Chen Zhu, Julie M. Cairney, Simon P. Ringer, Christopher R. Killmore, Frank Barbaro, James Williams
  • NITRIDING OF NIOBIUM STEEL AND PRODUCT MADE THEREBY
    Publication number: 20190100827
    Abstract: A nitrided steel product or thin cast steel strip comprising, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, niobium between 0.01 and about 0.20%, and between 0.01 and 0.075% nitrogen, and having a majority of the microstructure comprised of bainite and acicular ferrite, having more than 70% niobium in solid solution prior to nitriding and having yield strength between 650 MPa and 800 MPa and tensile strength between 750 MPa and 900 MPa.
    Type: Application
    Filed: November 28, 2018
    Publication date: April 4, 2019
    Inventors: Yuxuan XIE, Chen ZHU, Julie M. CAIRNEY, Simon P. RINGER, Christopher R. KILLMORE, Frank BARBARO, James WILLIAMS
  • HIGH STRENGTH THIN CAST STRIP PRODUCT AND METHOD FOR MAKING THE SAME
    Publication number: 20140014238
    Abstract: A steel product or thin steel cast strip including, by weight, less than 0.25% carbon, between 0.20 and 2.0% manganese, between 0.05 and 0.50% silicon, less than 0.01% aluminum, niobium between 0.01% and 0.20%, and vanadium between 0.01% and 0.20%. The steel product may have a tensile strength of between 550 and 600 MPa after age hardening at a peak temperature of between 700 and 750° C.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 16, 2014
    Applicant: NUCOR CORPORATION
    Inventors: Kristin R. CARPENTER, Scott CLUFF, Christopher R. KILLMORE, Daniel Geoffrey EDELMAN, Peter C. CAMPBELL, Walter N. BLEJDE