Patents by Inventor Todd J. Dapkus

Todd J. Dapkus 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).

  • Method and apparatus for etching coated substrates
    Patent number: 6348159
    Abstract: A method for etching substrates, comprising providing at least a first and a second substrate having a coating selected from the group consisting of semiconductor coatings, metallic coatings, and mixtures thereof and introducing at least the first substrate and an etchant into a first tank to etch at least a portion of the coating from the first substrate, introducing at least the second substrate into a second tank and transferring the etchant from the first tank to the second tank to provide etch of at least a portion of the coatings from the second substrate, and removing the etched first substrate from the first tank.
    Type: Grant
    Filed: February 15, 1999
    Date of Patent: February 19, 2002
    Assignee: First Solar, LLC
    Inventors: Todd J. Dapkus, John R. Bohland