Patents by Inventor Kristen A. Rohde

Kristen A. Rohde 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).

  • High strength titanium-aluminum alloy having improved fatigue crack growth resistance
    Patent number: 5399212
    Abstract: An alpha/beta titanium alloy having improved fatigue crack growth resistance can be prepared through a thermomechanical process using a three-step thermal treatment. The first step includes a heat up and hold at a temperature above the beta transition temperature, while the second step is a stabilization treatment which includes a heat up and hold below the beta transition temperature, in the alpha/beta range. The third thermal treatment is an aging treatment. The invention is particularly useful in preparing forged parts for aircraft.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: March 21, 1995
    Assignee: Aluminum Company of America
    Inventors: Amiya K. Chakrabarti, George W. Kuhlman, Kristen A. Rohde