Patents by Inventor Timothy Laarman

Timothy Laarman 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: 5232518
    Abstract: A photovoltaic roofing system includes a plurality of roofing panels each having a photovoltaic device thereupon and each including an electrical connector engageable with a connector on another panel. The panels includes upstanding flanges and a batten and seam roof construction may be readily configured by interconnecting the panels, fastening them to the roof and covering adjoining flanges with the battens.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: August 3, 1993
    Assignee: United Solar Systems Corporation
    Inventors: Prem Nath, Timothy Laarman, Avtar Singh
  • Patent number: 5180434
    Abstract: In continuous apparatus for the glow discharge deposition of amorphous silicon alloy solar cells of p-i-n-type configuration in a plurality of interconnected, dedicated deposition chambers, a plasma bar operatively disposed between at least the plasma regions in which the layer pairs of amorphous silicon alloy material defining the major semiconductor junction of the solar cell are deposited. The plasma bar is adapted to initiate a plasma so as to prevent chemically adsorbed contaminants from deleteriously affecting the surface of the first deposited of the layer pair, thereby improving the open circuit voltage of the solar cell. In a similar manner, the plasma bar may also be provided between the layer pairs of amorphous silicon alloy material which combine to define the minor semiconductor junction of the solar cell. Finally, a plasma bar may be disposed between the oxide-based layer of a back reflector for reducing oxygen contamination of the silicon alloy material deposited thereupon.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: January 19, 1993
    Assignee: United Solar Systems Corporation
    Inventors: Gary M. DiDio, Kermit Jones, Kevin Hoffman, Timothy Laarman, Jon Call, Prem Nath
  • Patent number: 5092939
    Abstract: A roof structure 10 comprises panels 14 and 16 of desired length each having a galvanized steel supportive layer which has side supporting flanges 22 interconnected together to form the roof assembly 10. The mid portion 20 of each panel has a photovoltaic surface made from amorphous semiconductor material which is laminated onto the galvanized steel with a protective plastic transparent polymer coating laminated above the photovoltaic material. The laminated galvanized steel and the photovoltaic layers are rolled into a coil and transported on site where it is unrolled, cut to size having the flanges formed to construct the rigid panels and having the panels assembled together via clips 26 and weather-proof battens 32. The photovoltaic surfaces are connected together via electrical conduit 34 coupled through couplings 88 under the panels and between the frame members 30.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: March 3, 1992
    Assignee: United Solar Systems Corporation
    Inventors: Prem Nath, Timothy Laarman
  • Patent number: 4773944
    Abstract: A large area, high current, low voltage photovoltaic module including a common bottom electrode upon which a means adapted to collect and transport photogenerated current is disposed. By electrically interconnecting a plurality of said large area modules in series, the voltage obtained therefrom can be added so as to obtain any desired voltage output therefrom.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: September 27, 1988
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Prem Nath, Timothy Laarman, Craig Vogeli, Kenneth Whelan, Bernard Kelly