Patents by Inventor Roberto W. Vidal

Roberto W. Vidal 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).

  • Patent number: 5997722
    Abstract: A method for producing a photoreceptor having a substrate subjected to a surface finishing treatment to result in a finished substrate surface, wherein the method includes:(a) analyzing the finished substrate surface by performing a first surface energy reading, a first ellipsometry reading, a first x-ray diffraction reading, and a first profilometry reading;(b) removing electrochemically via an alternating voltage or alternating current a portion of the finished substrate surface, thereby resulting in a cleaned substrate surface;(c) analyzing the cleaned substrate surface by performing a second surface energy reading, a second ellipsometry reading, a second x-ray diffraction reading, and a second profilometry reading, wherein the removing step (b) is accomplished to the extent that the second surface energy reading and the second ellipsometry reading are measurably changed from the first surface energy reading and the first ellipsometry reading, but the second x-ray diffraction reading and the second profilo
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: December 7, 1999
    Assignee: Xerox Corporation
    Inventors: Alexandra I. Vidal, William G. Herbert, Roberto W. Vidal, Gary J. Maier, Jodie L. Morris, James E. McNamara, Gene W. O'Dell