Patents by Inventor Robert S. Oswald

Robert S. Oswald 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).

  • Publication number: 20090255572
    Abstract: A sealed photovoltaic module comprising a first substrate, a second substrate, a seal between the first and second substrates positioned at or near the edges of the substrates and forming a sealed chamber defined by the first and second substrates and the seal, and at least one thin film photovoltaic element positioned between the first and second substrate and at least partly within the chamber.
    Type: Application
    Filed: February 6, 2009
    Publication date: October 15, 2009
    Applicant: BP Corporation North America Inc.
    Inventor: Robert S. Oswald
  • Patent number: 7259321
    Abstract: A method for manufacturing a thin film photovoltaic module comprising series connected cells, the cells comprising a front contact, a back contact and a photovoltaically active region positioned between the front and back contacts, the series connected cell being formed by scribing a front contact layer, a photovoltaically active layer and a back contact layer on a substrate, the method comprising laser scribing at least one of the front contact layer, the photovoltaically active layer or the back contact layer to form laser scribes using a laser beam scanned rapidly over the layer.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: August 21, 2007
    Assignee: BP Corporation North America Inc.
    Inventors: Robert S. Oswald, Shengzhong Liu
  • Patent number: 6858461
    Abstract: A photovoltaic cell comprising a supporting substrate, a front contact layer on the substrate, a layer or layers of semiconductor material and a back contact layer comprising a metal, the back contact having areas without metal thereby permitting the passage of light through the cell.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: February 22, 2005
    Assignee: BP Corporation North America Inc.
    Inventors: Robert S. Oswald, Shengzhong Liu
  • Publication number: 20040219801
    Abstract: A photovoltaic cell comprising a supporting substrate, a front contact layer on the substrate, a layer or layers of semiconductor material and a back contact layer comprising a metal, the back contact having areas without metal thereby permitting the passage of light through the cell.
    Type: Application
    Filed: December 2, 2003
    Publication date: November 4, 2004
    Inventors: Robert S. Oswald, Shengzhong Liu
  • Publication number: 20030180983
    Abstract: A method for manufacturing a thin film photovoltaic module comprising series connected cells, the cells comprising a front contact, a back contact and a photovoltaically active region positioned between the front and back contacts, the series connected cell being formed by scribing a front contact layer, a photovoltaically active layer and a back contact layer on a substrate, the method comprising laser scribing at least one of the front contact layer, the photovoltaically active layer or the back contact layer to form laser scribes using a laser beam scanned rapidly over the layer.
    Type: Application
    Filed: January 3, 2003
    Publication date: September 25, 2003
    Inventors: Robert S. Oswald, Shengzhong Liu
  • Publication number: 20030116185
    Abstract: A sealed photovoltaic module comprising a first substrate, a second substrate, a seal between the first and second substrates positioned at or near the edges of the substrates and forming a sealed chamber defined by the first and second substrates and the seal, and at least one thin film photovoltaic element positioned between the first and second substrate and at least partly within the chamber.
    Type: Application
    Filed: October 22, 2002
    Publication date: June 26, 2003
    Inventor: Robert S. Oswald
  • Publication number: 20030044539
    Abstract: A continuous process for depositing a thin film layer or layers on a substrate during the production of thin film photovoltaic devices comprising moving the substrate at an elevated temperature in a reduced pressure environment past one or more sources of material to be deposited thereby forming on the substrate at least one thin film of the material from the source.
    Type: Application
    Filed: August 7, 2002
    Publication date: March 6, 2003
    Inventor: Robert S. Oswald
  • Publication number: 20020117199
    Abstract: A continuous process for depositing a thin film layer or layers on a substrate during the production of thin film photovoltaic devices comprising moving the substrate at an elevated temperature in a reduced pressure environment past one or more sources of material to be deposited thereby forming on the substrate at least one thin film of the material from the source.
    Type: Application
    Filed: February 6, 2002
    Publication date: August 29, 2002
    Inventor: Robert S. Oswald
  • Publication number: 20020119592
    Abstract: A photovoltaic cell comprising a supporting substrate, a front contact layer on the substrate, a layer or layers of semiconductor material and a back contact layer comprising a metal, the back contact having areas without metal thereby permitting the passage of light through the cell.
    Type: Application
    Filed: April 25, 2002
    Publication date: August 29, 2002
    Inventors: Robert S. Oswald, Shengzhong Liu
  • Publication number: 20020011641
    Abstract: A photovoltaic cell comprising a supporting substrate, a front contact layer on the substrate, a layer or layers of semiconductor material and a back contact layer comprising a metal, the back contact having areas without metal thereby permitting the passage of light through the cell.
    Type: Application
    Filed: June 26, 2001
    Publication date: January 31, 2002
    Inventors: Robert S. Oswald, Shengzhong Liu
  • Patent number: 4749454
    Abstract: A method of removing electrical shorts and shunts from a thin-film semiconductor device having pairs of electrodes with exposed contact surfaces wherein each pair of electrodes is separated by a semiconductor film. The disclosed method comprises the steps of coating the exposed contact surfaces with an ionic solution and successively applying a reverse-bias voltage between the exposed contact surfaces of each pair of electrodes. The ionic solution has an etching rate that increases with increased temperature so that the leakage current flowing through shorts and shunts located between each respective pair of electrodes in response to the reverse-bias voltage will create a local temperature increase at the shorts and shunts and selectively etch or oxidize the shorts and shunts, rendering them substantially nonconductive. The exposed contact surfaces can be coated using a sponge applicator or spray apparatus.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: June 7, 1988
    Assignee: Solarex Corporation
    Inventors: Rajeewa R. Arya, Robert S. Oswald