Patents by Inventor Tekai Akuetteh

Tekai Akuetteh 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).

  • Excimer gas purification
    Patent number: 9478934
    Abstract: The disclosure relates to the removal of hydrogen fluoride (HF) from an excimer laser either in operation or in standby using a metal halide salt reactor. Removal of HF is desirable because the contaminant not only absorbs laser emission, thus reducing laser power, but it is also chemically reactive, and degrades the lifetime of internal laser components. The metal halide salt reactor may be provided either in the laser vessel or in an external conduit loop.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: October 25, 2016
    Assignee: LightMachinery Inc.
    Inventors: Adam Donaldson, Edward S. Williams, John H. Hunter, Tekai Akuetteh, Ian J. Miller