Patents by Inventor William Andrew Hochella

William Andrew Hochella 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).

  • Manufacturing shape memory alloy tubes by drawing
    Patent number: 8444775
    Abstract: Shape Memory Alloy tube is protected from damage during drawing, caused by galling-type interaction between the tube and high-carbon dies, by forming an oxide surface layer. This invention protects the tube internal diameter from oxidation while allowing the tube outside diameter to be oxidized, by using an oxygen getter located within the tube during the oxidation step. The method yields a higher quality internal diameter and improves productivity.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 21, 2013
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Edwin Alfred Crombie, III, William Andrew Hochella
  • MANUFACTURING SHAPE MEMORY ALLOY TUBES BY DRAWING
    Publication number: 20100282370
    Abstract: Shape Memory Alloy tube is protected from damage during drawing, caused by galling-type interaction between the tube and high-carbon dies, by forming an oxide surface layer. This invention protects the tube internal diameter from oxidation while allowing the tube outside diameter to be oxidised, by using an oxygen getter located within the tube during the oxidation step. The method yields a higher quality internal diameter and improves productivity.
    Type: Application
    Filed: September 26, 2008
    Publication date: November 11, 2010
    Applicant: JOHNSON TATTHEY PUBLIC LIMITED COMPANY
    Inventors: Edwin Alfred Crombie, III, William Andrew Hochella