Patents by Inventor Percy Valdivia

Percy Valdivia 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 of fabricating solar cells
    Patent number: 5082791
    Abstract: A solar cell fabrication procedure is described in which an excimer laser is used to cut a trench in a flat solar cell substrate so as to electrically isolate front and back regions of the substrate. The trench is cut around the perimeter of the cell. The advantage of using an excimer laser is that it will ablate a trench without diffusing conductive material deeper into the cell.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: January 21, 1992
    Assignee: Mobil Solar Energy Corporation
    Inventors: Ronald H. Micheels, Percy Valdivia, Jack I. Hanoka
  • Solar cell with trench through pn junction
    Patent number: 4989059
    Abstract: A solar cell fabrication procedure is described in which a trench is cut in the substrate so as to electrically isolate front and back regions of a flat solar cell. The trench is preferably cut around the perimeter of the rear side of the cell. The trench is preferably formed by an excimer laser which may be used to ablate a trench without diffusing conductive material deeper into the cell.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: January 29, 1991
    Assignee: Mobil Solar Energy Corporation
    Inventors: Ronald H. Micheels, Percy Valdivia, Jack I. Hanoka